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Li N, Li Y, von Bardeleben HJ, Dambournet D, Lescouëzec R. Aluminum intercalation behaviours of {[Fe(Tp)(CN) 3] 2[M(H 2O) 2]} cyanido-bridged chain compounds in an ionic liquid electrolyte. Dalton Trans 2024; 53:12107-12118. [PMID: 38978469 DOI: 10.1039/d4dt01316f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/10/2024]
Abstract
As the development of aluminum-ion batteries is still in its infancy, researchers are still dedicated to exploring suitable host materials and investigating their aluminum intercalation behaviours. Here, a series of cyanido-bridged chain compounds with the formula {[FeIII(Tp)(CN)3]2[MII(H2O)2]}n (M = Ni, Co, Mn, Zn, Cu) are studied as cathode electrodes for aluminum-ion batteries with [EMIm]Cl-AlCl3 (1-ethyl-3-methylimidazolium chloride-AlCl3) ionic liquid as the electrolyte. The electrochemical properties suggested Fe3+/Fe2+ to be the redox-active couple during the aluminum intercalation and deintercalation processes of these compounds, and the observed maximum specific capacity obtained by the Fe-Co compound is 200 mA h g-1 despite the rapid specific capacity fading. To gain a deeper understanding of the capacity decay suffered by these compounds, further investigation was conducted to explore the evolution of compounds during the electrochemical measurements. It has been attributed to the following reasons: 1. thermodynamic instability results in the transformation/damage of two of the chain structures (for the Fe-Ni and Fe-Co compounds) during heat treatment on electrodes, a crucial step in electrode preparation; 2. the acidic nature of the electrolyte triggers the destruction of the chain structure, with the appearance of partial reduction of Fe3+ to Fe2+, and a new interaction of the cyano group with aluminum; 3. the high charge density of inserted Al ions makes the chain structure suffer from structural damage during both the charging and discharging processes. The progressive accumulation of trapped intercalated ions hampers their involvement in the reaction, consequently decreasing electrochemical reversibility.
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Affiliation(s)
- Na Li
- Sorbonne Université, CNRS, Physico-chimie des Électrolytes et Nano-Systèmes Interfaciaux, PHENIX, F-75005 Paris, France.
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, ERMMES, F-75005 Paris, France.
| | - Yanling Li
- Sorbonne Université, CNRS, Physico-chimie des Électrolytes et Nano-Systèmes Interfaciaux, PHENIX, F-75005 Paris, France.
| | | | - Damien Dambournet
- Sorbonne Université, CNRS, Physico-chimie des Électrolytes et Nano-Systèmes Interfaciaux, PHENIX, F-75005 Paris, France.
- Réseau sur le Stockage Electrochimique de l'Energie (RS2E), FR CNRS 3459, 80039 Amiens, France
| | - Rodrigue Lescouëzec
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, ERMMES, F-75005 Paris, France.
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2
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Huang YB, Su SQ, Xu WH, Zheng WW, Gao KG, Ji TC, Zhang XP, Shui QR, Zhou ZQ, Ikeda T, Wu SQ, Sato O. Fully Optical Control of Polarization Current Direction in a Cyanide-Bridged Trinuclear Complex. Angew Chem Int Ed Engl 2024:e202409948. [PMID: 38949953 DOI: 10.1002/anie.202409948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2024] [Revised: 06/29/2024] [Accepted: 07/01/2024] [Indexed: 07/03/2024]
Abstract
As a remote and non-contact stimulus, light offers the potential for manipulating the polarization of ferroelectric materials without physical contact. However, in current research, the non-contact write-read (erase) process lacks direct observation through the stable current as output signal. To address this limitation, we investigated the photoinduced polarization switching capabilities of the cyanide-bridged compound [Fe2Co] using visible light, leading to the achievement of rewritable polarization. By subjecting [Fe2Co] crystals to alternating irradiation with 785 nm and 532 nm light, the polarization changes exhibited a distinct square wave pattern, confirming the reliability of the writing and erasing processes. Initialization involved exposing specific crystal units to 532 nm light for storing "1" or "0" information, while reading was accomplished by scanning the units with 785 nm light, resulting in brief current pulses for "1" states and no current signal for "0" states. This research unveils new possibilities for optical storage systems, paving the way for efficient and rewritable data storage and retrieval technologies, such as the next-generation memories.
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Affiliation(s)
- Yu-Bo Huang
- Institute for Materials Chemistry and Engineering and IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Sheng-Qun Su
- Institute for Materials Chemistry and Engineering and IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Wen-Huang Xu
- Institute for Materials Chemistry and Engineering and IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Wen-Wei Zheng
- Institute for Materials Chemistry and Engineering and IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Kai-Ge Gao
- College of Physical Science and Technology, Yangzhou University, Jiangsu, 225009, P. R. China
| | - Tian-Chi Ji
- Institute for Materials Chemistry and Engineering and IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Xiao-Peng Zhang
- Institute for Materials Chemistry and Engineering and IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Qi-Rui Shui
- Institute for Materials Chemistry and Engineering and IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Zi-Qi Zhou
- Institute for Materials Chemistry and Engineering and IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Taisuke Ikeda
- Institute for Materials Chemistry and Engineering and IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Shu-Qi Wu
- Institute for Materials Chemistry and Engineering and IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Osamu Sato
- Institute for Materials Chemistry and Engineering and IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
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3
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Zakrzewski J, Liberka M, Wang J, Chorazy S, Ohkoshi SI. Optical Phenomena in Molecule-Based Magnetic Materials. Chem Rev 2024; 124:5930-6050. [PMID: 38687182 PMCID: PMC11082909 DOI: 10.1021/acs.chemrev.3c00840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
Since the last century, we have witnessed the development of molecular magnetism which deals with magnetic materials based on molecular species, i.e., organic radicals and metal complexes. Among them, the broadest attention was devoted to molecule-based ferro-/ferrimagnets, spin transition materials, including those exploring electron transfer, molecular nanomagnets, such as single-molecule magnets (SMMs), molecular qubits, and stimuli-responsive magnetic materials. Their physical properties open the application horizons in sensors, data storage, spintronics, and quantum computation. It was found that various optical phenomena, such as thermochromism, photoswitching of magnetic and optical characteristics, luminescence, nonlinear optical and chiroptical effects, as well as optical responsivity to external stimuli, can be implemented into molecule-based magnetic materials. Moreover, the fruitful interactions of these optical effects with magnetism in molecule-based materials can provide new physical cross-effects and multifunctionality, enriching the applications in optical, electronic, and magnetic devices. This Review aims to show the scope of optical phenomena generated in molecule-based magnetic materials, including the recent advances in such areas as high-temperature photomagnetism, optical thermometry utilizing SMMs, optical addressability of molecular qubits, magneto-chiral dichroism, and opto-magneto-electric multifunctionality. These findings are discussed in the context of the types of optical phenomena accessible for various classes of molecule-based magnetic materials.
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Affiliation(s)
- Jakub
J. Zakrzewski
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
- Doctoral
School of Exact and Natural Sciences, Jagiellonian
University, Lojasiewicza
11, 30-348 Krakow, Poland
| | - Michal Liberka
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
- Doctoral
School of Exact and Natural Sciences, Jagiellonian
University, Lojasiewicza
11, 30-348 Krakow, Poland
| | - Junhao Wang
- Department
of Materials Science, Faculty of Pure and Applied Science, University of Tsukuba, 1-1-1 Tonnodai, Tsukuba, Ibaraki 305-8573, Japan
| | - Szymon Chorazy
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Shin-ichi Ohkoshi
- Department
of Chemistry, School of Science, The University
of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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4
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Kaushik K, Sarkar A, Kamilya S, Li Y, Dechambenoit P, Rouzières M, Mehta S, Mondal A. Light-Induced, Structural Matrix Guided Stepwise Spin-State Switching in 3d-5d Molecular Assembly. Inorg Chem 2024; 63:7604-7612. [PMID: 38556753 DOI: 10.1021/acs.inorgchem.3c03970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/02/2024]
Abstract
A new iron(II) molecular complex {[W(CN)8][Fe(bik*)3]2}BF4·7H2O·1.5CH3OH (1.7H2O·1.5CH3OH) was synthesized using a versatile octacyanotungstate(V) building block and N-donor bidentate ligand (bik* = bis(1-ethyl-1H-imidazol-2-yl)ketone) and detailed characterizations were carried out. The crystal structure of 1.7H2O·1.5CH3OH is composed of an ionic salt from one anionic [W(CN)8]3- unit, two isolated cationic [Fe(bik*)3]2+ units, and one BF4- counteranion in the asymmetric unit. Magnetic studies of 1.7H2O·1.5CH3OH display interesting two-step reversible thermo-induced spin-state switching and the partially desolvated form 1.7H2O shows a photomagnetic effect at low temperatures. Additionally, the physical properties of 1.7H2O·1.5CH3OH were compared with the monomeric unit of {[Fe(bik*)3]2}·4ReO4·H2O (2.H2O) and detailed photophysical investigations were also performed to study the effect of a structural matrix {[W(CN)8]3- and ReO4- unit} on the spin-state switching properties of the [Fe(bik*)3]2+ unit in both systems (1.7H2O·1.5CH3OH and 2.H2O).
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Affiliation(s)
- Krishna Kaushik
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, 560012 Bangalore, India
| | - Archita Sarkar
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, 560012 Bangalore, India
| | - Sujit Kamilya
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, 560012 Bangalore, India
| | - Yanling Li
- Institut Parisien de Chimie Moléculaire, CNRS UMR 8232, Sorbonne Université, 4 place Jussieu, F-75252 Paris, cedex 5, France
| | - Pierre Dechambenoit
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, CRPP, UMR 5031, 33600 Pessac, France
| | - Mathieu Rouzières
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, CRPP, UMR 5031, 33600 Pessac, France
| | - Sakshi Mehta
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, 560012 Bangalore, India
| | - Abhishake Mondal
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, 560012 Bangalore, India
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Jia S, Shang M, Jin S, Zhu X, Cai Y, Li D. Electron transfer coupled spin transition in cyano-bridged mixed-valence {FeIII2FeII2} molecular squares. Dalton Trans 2024; 53:2807-2814. [PMID: 38230412 DOI: 10.1039/d3dt03208f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Abstract
The research on electron transfer coupled spin transition regulating the valence state and spin state transition of metal ions is promising and challenging. Herein, we report a cyano-bridged {FeIII2FeII2} molecular square complex, {[Fe(Tp)(CN)3]2 [Fe(bnbpen)]2}(ClO4)2·8CH3OH (1·8CH3OH, bnbpen = N,N'-bis-(2-naphthylmethyl)-N,N'-bis(2-picolayl)-ethylenediamine), and its free of solvents form (1). Combined single-crystal X-ray diffraction, temperature-dependent infrared (IR) spectra, magnetic measurements, and Mössbauer spectra reveal that 1·8CH3OH and 1 exhibit reversible one-step and two-step electron transfer coupled spin transition (ETCST) with temperature change, between the low-temperature state {FeII,LS(μ-CN)FeIII,LS}2 (LS = low spin, HS = high spin) and the high-temperature state {FeIII,LS(μ-CN)FeII,HS}2, respectively.
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Affiliation(s)
- Shuwen Jia
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079 Wuhan, P. R. China.
| | - Mengjia Shang
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079 Wuhan, P. R. China.
| | - Sai Jin
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079 Wuhan, P. R. China.
| | - Xinrui Zhu
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079 Wuhan, P. R. China.
| | - Yuanyuan Cai
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079 Wuhan, P. R. China.
| | - Dongfeng Li
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079 Wuhan, P. R. China.
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6
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Huang YB, Li JQ, Xu WH, Zheng W, Zhang X, Gao KG, Ji T, Ikeda T, Nakanishi T, Kanegawa S, Wu SQ, Su SQ, Sato O. Electrically Detectable Photoinduced Polarization Switching in a Molecular Prussian Blue Analogue. J Am Chem Soc 2024; 146:201-209. [PMID: 38134356 DOI: 10.1021/jacs.3c07545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2023]
Abstract
Light, a nondestructive and remotely controllable external stimulus, effectively triggers a variety of electron-transfer phenomena in metal complexes. One prime example includes using light in molecular cyanide-bridged [FeCo] bimetallic Prussian blue analogues, where it switches the system between the electron-transferred metastable state and the system's ground state. If this process is coupled to a ferroelectric-type phase transition, the generation and disappearance of macroscopic polarization, entirely under light control, become possible. In this research, we successfully executed a nonpolar-to-polar phase transition in a trinuclear cyanide-bridged [Fe2Co] complex crystal via directional electron transfer. Intriguingly, by exposing the crystal to the wavelength of light─785 nm─without any electric field─we can drive this ferroelectric phase transition to completely depolarize the crystal, during which a measurable electric current response can be detected. These discoveries signify an important step toward the realization of fully light-controlled ferroelectric memory devices.
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Affiliation(s)
- Yu-Bo Huang
- Institute for Materials Chemistry and Engineering and IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Jun-Qiu Li
- Chaozhou Three-circle (Group) Co., Ltd., Sanhuan Industrial District, Fengtang, Chaozhou 515646, Guangdong, China
| | - Wen-Huang Xu
- Institute for Materials Chemistry and Engineering and IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Wenwei Zheng
- Institute for Materials Chemistry and Engineering and IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Xiaopeng Zhang
- Institute for Materials Chemistry and Engineering and IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kai-Ge Gao
- College of Physical Science and Technology, Yangzhou University, Jiangsu 225009, PR China
| | - Tianchi Ji
- Institute for Materials Chemistry and Engineering and IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Taisuke Ikeda
- Institute for Materials Chemistry and Engineering and IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Takumi Nakanishi
- Institute for Materials Chemistry and Engineering and IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Shinji Kanegawa
- Institute for Materials Chemistry and Engineering and IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Shu-Qi Wu
- Institute for Materials Chemistry and Engineering and IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Sheng-Qun Su
- Institute for Materials Chemistry and Engineering and IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Osamu Sato
- Institute for Materials Chemistry and Engineering and IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
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7
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Kaushik K, Mehta S, Das M, Ghosh S, Kamilya S, Mondal A. Stimuli-responsive magnetic materials: impact of spin and electronic modulation. Chem Commun (Camb) 2023; 59:13107-13124. [PMID: 37846652 DOI: 10.1039/d3cc04268e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2023]
Abstract
Addressing molecular bistability as a function of external stimuli, especially in spin-crossover (SCO) and metal-to-metal electron transfer (MMET) systems, has seen a surge of interest in the field of molecule-based magnetic materials due to their enormous potential in various technological applications such as molecular spintronics, memory and electronic devices, switches, sensors, and many more. The fine-tuning of molecular components allow the design and synthesis of materials with tailored properties for these vast applications. In this Feature Article, we discuss a part of our research work into this broad topic, pertaining to the recent discoveries in the field of switchable molecular magnetic materials based on SCO and MMET systems, along with some historical background of the area and related accomplishments made in recent years.
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Affiliation(s)
- Krishna Kaushik
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
| | - Sakshi Mehta
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
| | - Mayurika Das
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
| | - Sounak Ghosh
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
| | - Sujit Kamilya
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
| | - Abhishake Mondal
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
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8
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Jia S, Zhu X, Li D. Observation of protonation-induced intra-molecular metal-to-metal charge transfer in cyano-bridged [Fe-CN-Mn/Ni] dinuclear complexes. Dalton Trans 2023; 52:15009-15016. [PMID: 37811745 DOI: 10.1039/d3dt02200e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
A key challenge in the design of magnetic molecules with intramolecular charge transfer behavior is to obtain reversible magnetic bistability triggered by external stimuli. Here, we show that two dinuclear metal complexes, [(bbp)Fe(CN)3Mn(Py5Me2)]·2.5CH3OH (4) and [(bbp)Fe(CN)3Ni(Py5Me2)]·2.5CH3OH (5) (Py5Me2 = 2,6-bis(1,1-di(pyridine-2-yl)ethyl)pyridine, H2bbp = 2,6-bis(benzimidazole-2-yl)pyridine), were self-assembly synthesized by (Bu4N)2[(bbp)FeIII(CN)3] and [Mn(Py5Me2)(OH2)](ClO4)2 or [Ni(Py5Me2)(OH2)](ClO4)2, respectively. Complexes 4 and 5 exhibited intramolecular metal-to-metal charge transfer with the addition of acids or bases in solution by UV-visible spectrophotometric measurements and electrochemistry studies, and concomitant switching of the {FeIII(μ-CN)MnII/NiII} state to the {FeII(μ-CN)MnIII/NiIII} state.
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Affiliation(s)
- Shuwen Jia
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079 Wuhan, P. R. China.
| | - Xinrui Zhu
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079 Wuhan, P. R. China.
| | - Dongfeng Li
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079 Wuhan, P. R. China.
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Liu Q, Cheng Y, Liu S, Chen ZY, Zhang YZ. Anthryl-functionalized cyanide-bridged Fe/Co cubes. Dalton Trans 2023; 52:12878-12884. [PMID: 37641912 DOI: 10.1039/d3dt01630g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
Two anthryl-functionalized cyanide-bridged [Fe4Co4] cube complexes, [(pzTp)Fe(CN)3Co(TpEtOAn)]4[OTf]4·8MeCN·7Et2O (1) and [NEt4]3[(pzTp)Fe(CN)3Co(TpEtOAn)]4[OTf]7·5MeCN·2Et2O (2) (pzTp- = tetrapyrazolylborate, TpEtOAn = 2,2,2-tris-(pyrazol-1-yl)ethoxy(9-methyl-anthracene)), were synthesized and characterized. The crystallographic study revealed that the [Fe4Co4] cubes are arranged into a linear supramolecular chain through significant anthryl-anthryl π-π stacking interactions in complex 1, whereas a zigzag supramolecular 1D assembly is observed in 2. The magnetic measurements showed that both compounds exhibited incomplete transitions from the paramagnetic {FeIIILS(μ-CN)CoIIHS} state to the diamagnetic {FeIILS(μ-CN)CoIIILS} state at about 200 K. The luminescence measurement of 1 in solution revealed an enhancement of the emission upon dilution or addition of perfluoronaphthalene (PFN) molecules, which could be attributed to the suppression of the aggregation-caused quenching (ACQ) effect, suggesting possible aggregation of the cube units in the solution.
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Affiliation(s)
- Qi Liu
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China.
| | - Yue Cheng
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China.
| | - Shihao Liu
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China.
| | - Zi-Yi Chen
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China.
| | - Yuan-Zhu Zhang
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China.
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10
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Bagchi S, Kamilya S, Mehta S, Mandal S, Bandyopadhyay A, Narayan A, Ghosh S, Mondal A. Spin-state switching: chemical modulation and the impact of intermolecular interactions in manganese(III) complexes. Dalton Trans 2023; 52:11335-11348. [PMID: 37530419 DOI: 10.1039/d3dt01707a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Abstract
A series of mononuclear manganese(III) complexes [Mn(X-sal2-323)](ReO4) (X = 5 Cl, 1; X = 5 Br, 2; X = 3,5 Cl, 3; X = 3,5 Br, 4; and X = 5 NO2, 5), containing hexadentate ligands prepared using the condensation of N,N'-bis(3-aminopropyl)ethylenediamine and 5- or 3,5-substituted salicylaldehyde, has been synthesized. Variable temperature single-crystal X-ray diffraction, magnetic, spectroscopic, electrochemical, and spectroelectrochemical analyses, and theoretical calculations have been used to explore the role of various ligand substituents in the spin-state switching behavior of the prepared manganese(III) complexes. All five complexes consist of an analogous distorted octahedral monocationic MnN4O2 surrounding offered by the flexible hexadentate ligand and ReO4- as the counter anion. However, a disordered water molecule was detected in complex 4. Complexes 1 (X = 5 Cl) and 5 (X = 5 NO2) show gradual and complete spin-state switching between the high-spin (HS) (S = 2) and the low-spin (LS) (S = 1) state with T1/2 values of 146 and 115 K respectively, while an abrupt and complete transition at 95 K was observed for complex 2 (X = 5 Br). Alternatively, complex 3 (X = 3, 5 Cl) exhibits an incomplete and sharp transition between the HS and LS states at 104 K, while complex 4 (X = 3, 5 Br) (desolvated) remains almost LS up to 300 K and then displays gradual and incomplete SCO at a higher temperature. The nature of the spin-state switch and transition temperature suggest that the structural effect (cooperativity) plays a more significant role in comparison with the electronic effect coming from various substituents (Cl, Br, and NO2), which is further supported by the detailed structural, electrochemical, and theoretical studies.
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Affiliation(s)
- Sukanya Bagchi
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
| | - Sujit Kamilya
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
| | - Sakshi Mehta
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
| | - Subhankar Mandal
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
| | - Arka Bandyopadhyay
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
| | - Awadhesh Narayan
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
| | - Subrata Ghosh
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
| | - Abhishake Mondal
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
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11
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Kamilya S, Mehta S, Semwal M, Lescouëzec R, Li Y, Pechousek J, Reddy VR, Rivière E, Rouzières M, Mondal A. ON/OFF Photo(switching) along with Reversible Spin-State Change and Single-Crystal-to-Single-Crystal Transformation in a Mixed-Valence Fe(II)Fe(III) Molecular System. Inorg Chem 2023. [PMID: 36867089 DOI: 10.1021/acs.inorgchem.2c03972] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Abstract
A mixed-valence Fe(II)Fe(III) molecular system, {[Fe(pzTp)(CN)3]2[Fe(bik)2]2}·[Fe(pzTp)(CN)3]2·4MeOH (1·4MeOH) (bik = bis-(1-methylimidazolyl)-2-methanone, pzTp = tetrakis(pyrazolyl)borate), exhibits single-crystal-to-single-crystal (SC-SC) transformation while increasing the temperature and is converted into {[Fe(pzTp)(CN)3]2[Fe(bik)2]2}·[Fe(pzTp)(CN)3]2 (1). Both complexes exhibit thermo-induced spin-state switching behavior along with reversible SC-SC transformation, where the low-temperature [FeIIILSFeIILS]2 phase transforms into a high-temperature [FeIIILSFeIIHS]2 phase. 1·4MeOH exhibits an abrupt spin-state switching with T1/2 at 355 K, whereas 1 undergoes a gradual and reversible spin-state switching with a lower T1/2 at 338 K. Astonishingly, 1 exhibits ON/OFF photo-induced spin-state switching with TLIESST = 67 K, whereas 1·4MeOH does not show such an effect.
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Affiliation(s)
- Sujit Kamilya
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C. V. Raman Road, Bangalore 560012, India
| | - Sakshi Mehta
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C. V. Raman Road, Bangalore 560012, India
| | - Mohini Semwal
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C. V. Raman Road, Bangalore 560012, India
| | - Rodrigue Lescouëzec
- Sorbonne Université, Institut Parisien de Chimie Moléculaire, UMR CNRS 8232, 4 place Jussieu, Paris 750005, France
| | - Yanling Li
- Sorbonne Université, Institut Parisien de Chimie Moléculaire, UMR CNRS 8232, 4 place Jussieu, Paris 750005, France
| | - Jiri Pechousek
- Department of Experimental Physics, Palacký University Olomouc, 17, listopadu 1192/12, 771 46 Olomouc, Czech Republic
| | - Varimalla R Reddy
- UGC-DAE Consortium for Scientific Research, University Campus, Khandwa Road, Indore 452001, India
| | - Eric Rivière
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR 8182, bât. 420, Université Paris-Sud, 11 rue George Clémenceau, 91405 Orsay Cedex, France
| | - Mathieu Rouzières
- Centre de Recherche Paul Pascal, UMR 5031, Université de Bordeaux, CNRS, 33600 Pessac, France
| | - Abhishake Mondal
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C. V. Raman Road, Bangalore 560012, India
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12
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Meng L, Deng YF, Holmes SM, Zhang YZ. Thermo- and photo-induced electron transfer in a series of [Fe 2Co 2] capsules. Dalton Trans 2023; 52:1616-1622. [PMID: 36648100 DOI: 10.1039/d2dt03328c] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Recently, a family of [Fe2Co2] molecular capsules that display tunable electron transfer-coupled spin transition (ETCST) behavior were reported via a smart approach through Schiff-base condensation of aldehyde-functionalized 2,2-bipyridines (bpyCHO) and 1,7-heptanediamine (H2N(CH2)7NH2). Here, three more capsule complexes {[(TpR)Fe(CN)3]2[Co(bpyCN(CH2)nNCbpy)]2[ClO4]2}·n(solvent) (1, TpR = Tp*, n = 5, sol = 8DMF; 2, TpR = TpMe, n = 9, sol = 5MeCN; and 3, TpR = Tp*, n = 11, sol = 5MeCN), where Tp* = hydridotris(3,5-dimethylpyrazol-1-yl)borate and TpMe = hydridotris(3-methylpyrazol-1-yl)borate are reported, demonstrating a successful extension of such an approach with other alkyldiamines of different lengths. Combined X-ray crystallographic, infrared spectroscopic and magnetic studies reveal incomplete electron transfer with either changing temperature or upon light exposure.
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Affiliation(s)
- Lingyi Meng
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, P. R. China.
| | - Yi-Fei Deng
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, P. R. China.
| | - Stephen M Holmes
- Department of Chemistry and Biochemistry and Centre for Nanoscience, University of Missouri-St Louis, St Louis, Missouri 63121, USA.
| | - Yuan-Zhu Zhang
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, P. R. China.
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13
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14
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Ghosh S, Ghosh S, Kamilya S, Mandal S, Mehta S, Mondal A. Impact of Counteranion on Reversible Spin-State Switching in a Series of Cobalt(II) Complexes Containing a Redox-Active Ethylenedioxythiophene-Based Terpyridine Ligand. Inorg Chem 2022; 61:17080-17088. [PMID: 36264687 DOI: 10.1021/acs.inorgchem.2c02313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The self-assembly of a redox-active ethylenedioxythiophene (EDOT)-terpyridine-based tridentate ligand and cobalt(II) unit with different counteranions has led to a series of new cobalt(II) complexes [Co(L)2](X)2 (X = BF4 (1), ClO4 (2), and BPh4 (3)) (L = 4'-(3,4-ethylenedioxythiophene)-2,2':6',2″-terpyridine). The impact of various counteranions on stabilization and spin-state switching of the cobalt(II) center was explored through detailed magneto-structural investigation using variable temperature single-crystal X-ray diffraction, magnetic, spectroscopic, electrochemical, and spectroelectrochemical studies. All three complexes 1-3 consisted of an isostructural dicationic distorted octahedral CoN6 coordination environment offered by the two L ligands in a bis-meridional fashion and BF4-, ClO4-, and BPh4- as a counteranion, respectively. Complex 2 with ClO4- counteranion showed a reversible, gradual, and nearly complete spin-state switching between low-spin (LS) (S = 1/2) and high-spin (HS) (S = 3/2) states, while an incomplete spin-state switching behavior was observed for complexes 1 (BF4-) and 3 (BPh4-) in the measured temperature range of 350-2 K. The non-covalent cation-anion interactions played a significant role in stabilizing the spin-state in 1-3. Additionally, complexes 1-3 also exhibited interesting redox-stimuli-based reversible paramagnetic HS cobalt(II) (S = 3/2) to diamagnetic LS cobalt(III) (S = 0) conversion, offering an alternate way to switch the magnetic properties.
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Affiliation(s)
- Subrata Ghosh
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India
| | - Sounak Ghosh
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India
| | - Sujit Kamilya
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India
| | - Subhankar Mandal
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India
| | - Sakshi Mehta
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India
| | - Abhishake Mondal
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India
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15
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Meng L, Deng YF, Liu J, Liu YJ, Zhang YZ. Tuning the electron transfer events in a series of cyanide-bridged [Fe 2Co 2] squares according to different electron donors. Dalton Trans 2022; 51:15669-15674. [PMID: 36172797 DOI: 10.1039/d2dt02416k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
It has been recognized that both the ligand fields and intermolecular interactions may greatly impact the electron-transfer-coupled spin transition (ETCST) events in switchable magnetic materials; however, the engineering of these factors within a given system is still challenging. In this article, we chose the 4,4'-substituent 2,2'-bipyridine derivatives as chelating ligands according to their increasing electron-donating strength and incremental potential for forming hydrogen bonds (bpyCHO,CH3(L1) < bpyCH2OH,CH3 (L2) < bpyCH2OH,CH2OH (L3)), and prepared three new [Fe2Co2] complexes, {[(Tp*)Fe(CN)3Co(L)2]2[ClO4]2}·Sol (1, L = L1, Sol = 4MeCN·2H2O; 2, L = L2, Sol = 3MeCN; 3, L = L3, Sol = 4MeOH; Tp* = hydrotris(3,5-dimethylpyrazol-1-yl)borate). X-ray crystallography studies revealed that all the complexes share similar cyanide-bridged [Fe2Co2] square compositions except for the different substituted groups of L ligands, which led to the clearly evidenced intercluster hydrogen bonds between the neighbouring hydroxyl groups in 2 and 3. As a result, 1 remained in the paramagnetic [FeIII,LS2CoII,HS2] state over the whole temperature range, while 2 and 3 showed complete ETCST behaviour with the transition temperatures (T1/2) being 221 and 294 K, respectively.
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Affiliation(s)
- Lingyi Meng
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, P. R. China.
| | - Yi-Fei Deng
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, P. R. China.
| | - Jianxun Liu
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, P. R. China
| | - Yan Jun Liu
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, P. R. China
| | - Yuan-Zhu Zhang
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, P. R. China.
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16
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De S, Flambard A, Xu B, Chamoreau L, Gontard G, Lisnard L, Li Y, Boillot M, Lescouëzec R. Molecular Magnetic Materials Based on {Co
III
(Tp*)(CN)
3
}
−
Cyanidometallate: Combined Magnetic, Structural and
59
Co NMR Study. Chemistry 2022; 28:e202200783. [PMID: 35716039 PMCID: PMC9543823 DOI: 10.1002/chem.202200783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Indexed: 11/09/2022]
Abstract
The cyanidocobaltate of formula fac‐PPh4[CoIII(Me2Tp)(CN)3] ⋅ CH3CN (1) has been used as a metalloligand to prepare polynuclear magnetic complexes (Me2Tp=hydrotris(3,5‐dimethylpyrazol‐1‐yl)borate). The association of 1 with in situ prepared [FeII(bik)2(MeCN)2](OTf)2 (bik=bis(1‐methylimidazol‐2‐yl)ketone) leads to a molecular square of formula {[CoIII{(Me2Tp)}(CN)3]2[FeII(bik)2]2}(OTf)2 ⋅ 4MeCN ⋅ 2H2O (2), whereas the self‐assembly of 1 with preformed cluster [CoII2(OH2)(piv)4(Hpiv)4] in MeCN leads to the two‐dimensional network of formula {[CoII2(piv)3]2[CoIII(Me2Tp)(CN)3]2 ⋅ 2CH3CN}∞ (3). These compounds were structurally characterized via single crystal X‐ray analysis and their spectroscopic (FTIR, UV‐Vis and 59Co NMR) properties and magnetic behaviours were also investigated. Bulk magnetic susceptibility measurements reveal that 1 is diamagnetic and 3 is paramagnetic throughout the explored temperature range, whereas 2 exhibits sharp spin transition centered at ca. 292 K. Compound 2 also exhibits photomagnetic effects at low temperature, selective light irradiations allowing to promote reversibly and repeatedly low‐spin⇔high‐spin conversion. Besides, the diamagnetic nature of the Co(III) building block allows us studying these compounds by means of 59Co NMR spectroscopy. Herein, a 59Co chemical shift has been used as a magnetic probe to corroborate experimental magnetic data obtained from bulk magnetic susceptibility measurements. An influence of the magnetic state of the neighbouring atoms is observed on the 59Co NMR signals. Moreover, for the very first time, 59Co NMR technique has been successfully introduced to investigate molecular materials with distinct magnetic properties.
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Affiliation(s)
- Siddhartha De
- Institut Parisien de Chimie Moléculaire UMR CNRS 8232 Sorbonne Université, CNRS 75005 Paris France
| | - Alexandrine Flambard
- Institut Parisien de Chimie Moléculaire UMR CNRS 8232 Sorbonne Université, CNRS 75005 Paris France
| | - Buqin Xu
- Institut Parisien de Chimie Moléculaire UMR CNRS 8232 Sorbonne Université, CNRS 75005 Paris France
| | - Lise‐Marie Chamoreau
- Institut Parisien de Chimie Moléculaire UMR CNRS 8232 Sorbonne Université, CNRS 75005 Paris France
| | - Geoffrey Gontard
- Institut Parisien de Chimie Moléculaire UMR CNRS 8232 Sorbonne Université, CNRS 75005 Paris France
| | - Laurent Lisnard
- Institut Parisien de Chimie Moléculaire UMR CNRS 8232 Sorbonne Université, CNRS 75005 Paris France
| | - Yanling Li
- Institut Parisien de Chimie Moléculaire UMR CNRS 8232 Sorbonne Université, CNRS 75005 Paris France
| | - Marie‐Laure Boillot
- Institut Chimie Moléculaire et Matériaux d'Orsay UMR CNRS 8182 Université Paris-Saclay, CNRS 91405 Orsay France
| | - Rodrigue Lescouëzec
- Institut Parisien de Chimie Moléculaire UMR CNRS 8232 Sorbonne Université, CNRS 75005 Paris France
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17
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Glatz J, Jiménez JR, Godeffroy L, von Bardeleben HJ, Fillaud L, Maisonhaute E, Li Y, Chamoreau LM, Lescouëzec R. Enlightening the Alkali Ion Role in the Photomagnetic Effect of FeCo Prussian Blue Analogues. J Am Chem Soc 2022; 144:10888-10901. [PMID: 35675503 DOI: 10.1021/jacs.2c03421] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
FeCo Prussian blue analogues of general formula AxCoy[Fe(CN)6]z are responsive, non-stoichiometric materials whose magnetic and optical properties can be reversibly switched by light irradiation. However, elucidating the critical influence of the inserted alkali ion, A+, on the material's properties remains complicated due to their complex local structure. Here, by investigating soluble A ⊂ [Fe4-Co4] cyanido cubes (A = K, Rb, and Cs), both accurate structural and electronic information could be obtained. First, X-ray diffraction analyses reveal distinct interactions between the inserted A+ ions and the {Fe4-Co4} box, which impacts the structural distortion in the cubic framework. These distortions vanish, and a displacement of the small K+ ion from a corner toward the center is observed, as a cobalt corner CoIIHS is oxidized to CoIIILS. Second, cyclic voltammetry experiments performed at variable temperatures show distinct splitting of the CoIIHS ⇔ CoIIILS peak potentials for the different A+ cations, which can be qualitatively linked to different thermodynamic (standard potentials) and kinetic (energy barriers) parameters associated with the structural reorganization accompanying this redox-coupled spin state change. Moreover, for the first time, photomagnetism was investigated in frozen solution to avoid effects of intermolecular interactions. The results show that the metastable state is stabilized following the trend K > Rb > Cs. The outcome of these studies suggests that the interaction of the inserted alkali ions with the cyanide cage and the structural changes accompanying the electron transfer impact the stability of the photoinduced state and the relaxation temperature: the smaller the cation, the higher the structural reorganization and the associated energy barrier, and the more stable the metastable state.
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Affiliation(s)
- Jana Glatz
- Institut Parisien de Chimie Moléculaire, CNRS UMR 8232, Sorbonne Université, 4 place Jussieu, F-75252 Paris cedex 5, France
| | - Juan-Ramón Jiménez
- Institut Parisien de Chimie Moléculaire, CNRS UMR 8232, Sorbonne Université, 4 place Jussieu, F-75252 Paris cedex 5, France
| | - Louis Godeffroy
- Laboratoire Interface et Systèmes Electrochimiques, CNRS UMR 8235, Sorbonne Université, 4 place Jussieu, F-75252 Paris cedex 5, France
| | - Hans Jurgen von Bardeleben
- Institut des Nanosciences de Paris, CNRS UMR 7588, Sorbonne Université, 4 place Jussieu, F-75252 Paris cedex 5, France
| | - Laure Fillaud
- Laboratoire Interface et Systèmes Electrochimiques, CNRS UMR 8235, Sorbonne Université, 4 place Jussieu, F-75252 Paris cedex 5, France
| | - Emmanuel Maisonhaute
- Laboratoire Interface et Systèmes Electrochimiques, CNRS UMR 8235, Sorbonne Université, 4 place Jussieu, F-75252 Paris cedex 5, France
| | - Yanling Li
- Institut Parisien de Chimie Moléculaire, CNRS UMR 8232, Sorbonne Université, 4 place Jussieu, F-75252 Paris cedex 5, France
| | - Lise-Marie Chamoreau
- Institut Parisien de Chimie Moléculaire, CNRS UMR 8232, Sorbonne Université, 4 place Jussieu, F-75252 Paris cedex 5, France
| | - Rodrigue Lescouëzec
- Institut Parisien de Chimie Moléculaire, CNRS UMR 8232, Sorbonne Université, 4 place Jussieu, F-75252 Paris cedex 5, France
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18
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Ghosh S, Kamilya S, Mehta S, Herchel R, Kiskin M, Veber S, Fedin M, Mondal A. Effect of Ligand Chain Length for Tuning of Molecular Dimensionality and Magnetic Relaxation in Redox Active Cobalt(II) EDOT Complexes (EDOT = 3,4-Ethylenedioxythiophene). Chem Asian J 2022; 17:e202200404. [PMID: 35617522 DOI: 10.1002/asia.202200404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 05/17/2022] [Indexed: 11/07/2022]
Abstract
Four cobalt(II) complexes, [Co(L1)2(NCX)2(MeOH)2] (X = S (1), Se (2)) and {[Co(L2)2(NCX)2]}n (X = S (3), Se (4)) (L1 = 2,5dipyridyl-3,4,-ethylenedioxylthiophene and L2 = 2,5diethynylpyridinyl-3,4-ethylenedioxythiophene), were synthesized by incorporating ethylenedioxythiophene based redox-active luminescence ligands. All these complexes have been well characterized using single-crystal X-ray diffraction analyses, spectroscopic and magnetic investigations. Magneto-structural studies showed that 1 and 2 adopt a mononuclear structure with CoN4O2 octahedral coordination geometry while 3 and 4 have a 2D [4 x 4] rhombic grid coordination networks (CNs) where each cobalt(II) center is in a CoN6 octahedral coordination environment. Static magnetic measurements reveal that all four complexes displayed a high spin (HS) (S = 3/2) state between 2 and 280 K which was further confirmed by X-band and Q-band EPR studies. Remarkably, along with the molecular dimensionality (0D and 2D) the modification in the axial coligands lead to a significant difference in the dynamic magnetic properties of the monomers and CNs at low temperatures. All complexes display slow magnetic relaxation behavior under an external dc magnetic field. For the complexes with NCS- as coligand observed higher energy barrier for spin reversal in comparison to the complexes with NCSe- as coligand, while mononuclear complex 1 exhibited a higher energy barrier than that of CN 3. Theoretical calculations at the DFT and CASSCF level of theory have been performed to get more insight into the electronic structure and magnetic properties of all four complexes.
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Affiliation(s)
- Subrata Ghosh
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C. V. Raman Road, 560012, Bangalore, India
| | - Sujit Kamilya
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C. V. Raman Road, 560012, Bangalore, India
| | - Sakshi Mehta
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C. V. Raman Road, 560012, Bangalore, India
| | - Radovan Herchel
- Department of Inorganic Chemistry, Faculty of Science, Palacký University, CZ-771 46, Olomouc, Czech Republic
| | - Mikhail Kiskin
- N. S. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Leninsky Prosp. 31, 119991, Moscow, Russia
| | - Sergey Veber
- International Tomography Center of the Siberian Branch of the Russian Academy of Sciences, Institutskaya Str. 3a, 630090, Novosibirsk, Russia
- Novosibirsk State University, Pirogova Str. 1, 630090, Novosibirsk, Russia
| | - Matvey Fedin
- International Tomography Center of the Siberian Branch of the Russian Academy of Sciences, Institutskaya Str. 3a, 630090, Novosibirsk, Russia
- Novosibirsk State University, Pirogova Str. 1, 630090, Novosibirsk, Russia
| | - Abhishake Mondal
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C. V. Raman Road, 560012, Bangalore, India
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19
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Ghosh S, Bagchi S, Kamilya S, Mehta S, Sarkar D, Herchel R, Mondal A. Impact of counter anions on spin-state switching of manganese(III) complexes containing an azobenzene ligand. Dalton Trans 2022; 51:7681-7694. [PMID: 35521740 DOI: 10.1039/d2dt00660j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Four mononuclear manganese(III) complexes coordinated with photo-active hexadentate azobenzene ligands, [Mn(5azo-sal2-323)](X) (X = Cl, 1; X = BF4, 2; X = ClO4, 3; X = PF6, 4), were prepared. The impact of various counter anions on the stabilization and switching of the spin state of the manganese(III) center was explored through detailed magneto-structural investigation using variable temperature single-crystal X-ray diffraction, magnetic, spectroscopic, and spectroelectrochemical studies, along with theoretical calculations. All four complexes consisted of an isostructural monocationic distorted octahedral MnN4O2 coordination environment offered by the hexadentate ligand and Cl-, BF4-, ClO4-, and PF6- as counter anions respectively. Complex 1 with a spherical Cl- counter anion showed a reversible and gradual spin-state switching between low-spin (LS) (S = 1) and high-spin (HS) (S = 2) states above 400 K, where non-covalent cation-anion interactions played a significant role in stabilizing the LS state. While, irrespective of the shape of the counter anion, complexes 2-4 remained in the HS state throughout the measured temperature range of 300-2 K, where strong π-π interaction between the azobenzene motifs among cationic units played a substantial role in stabilizing the HS state. Furthermore, magnetic data analyses revealed significantly large zero-field splitting in the S = 1 state for 1 (D = 19.4 cm-1, E/D = 0.008) in comparison with that in the S = 2 state for 2-4 (D = 3.99-4.97 cm-1, E/D = 0.002-0.195). Spectroelectrochemical investigations revealed the quasi-reversible reduction and oxidation of the manganese(III) center to manganese(II) and manganese(IV), respectively. A detailed theoretical calculation at the DFT and CASSCF level of theory was carried out to better understand the magneto-structural correlation.
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Affiliation(s)
- Subrata Ghosh
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
| | - Sukanya Bagchi
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
| | - Sujit Kamilya
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
| | - Sakshi Mehta
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
| | - Debopam Sarkar
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
| | - Radovan Herchel
- Department of Inorganic Chemistry, Faculty of Science, Palacký University, CZ-771 46 Olomouc, Czech Republic
| | - Abhishake Mondal
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
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20
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Rabelo R, Castellano M, Barros WP, Carbonell-Vilar JM, Viciano-Chumillas M, Lloret F, Julve M, Pasán J, Cañadillas-Delgado L, Ruiz-García R, Cano J. Molecular engineering of an inverse hexacopper(II) coordination complex with a photoactive metallacyclophane centroligand as prototype of a magnetic photoswitch†. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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21
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Wei ZQ, Xu QD, Liu Y, Huang YY, Li Y, Liu XL, Wu XT, Sheng TL. Influence of donor and acceptor substitution on the MMCT properties of binuclear cyanide bridged Schiff base compounds. Polyhedron 2022. [DOI: 10.1016/j.poly.2021.115639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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22
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Liu Q, Yao NT, Sun HY, Hu JX, Meng YS, Liu T. Light actuated single-chain magnet with magnetic coercivity. Inorg Chem Front 2022. [DOI: 10.1039/d2qi01371a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A cyanide-bridged {Fe2Co}-based coordination polymer was synthesized. It showed photo-induced slow relaxation of magnetization and a coercive field of 400 Oe.
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Affiliation(s)
- Qiang Liu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116024, China
| | - Nian-Tao Yao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116024, China
| | - Hui-Ying Sun
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116024, China
| | - Ji-Xiang Hu
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, China
| | - Yin-Shan Meng
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116024, China
| | - Tao Liu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116024, China
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23
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Manipulating Selective Metal‐to‐Metal Electron Transfer to Achieve Multi‐Phase Transitions in an Asymmetric [Fe2Co]‐Assembled Mixed‐Valence Chain. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202115367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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24
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Meng YS, Yao NT, Zhao L, Yi C, Liu Q, Li YM, Oshio H, Liu T. Manipulating Selective Metal-to-Metal Electron Transfer to Achieve Multi-Phase Transitions in an Asymmetric [Fe2Co]-Assembled Mixed-Valence Chain. Angew Chem Int Ed Engl 2021; 61:e202115367. [PMID: 34971479 DOI: 10.1002/anie.202115367] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Indexed: 11/08/2022]
Abstract
Manipulation of multi-functions in molecular materials is promising for future switching and memory devices, although is currently difficult. Herein, we assembled the asymmetric {Fe2Co} unit into a cyanide-bridged mixed-valence chain {[(Tp)Fe(CN)3]2Co(BIT)}·2CH3OH (1) (Tp = hydrotris(pyrazolyl)borate and BIT = 3,4-bis-(1H-imidazol-1-yl)thiophen), which showed reversible multi-phase transitions accompanied by the photo-switchable single-chain magnet property and dielectric anomalies. Variable temperature X-ray structural studies revealed thermo-and photo-induced selective electron transfer (ET) between the Co and one of the Fe ions. Alternating-current magnetic susceptibility studies revealed that 1 displayed on and off of the single-chain magnet behavior by alternating 946-nm and 532-nm light irradiations. A substantial anomaly in dielectric constant was discovered during the electron transfer process, which is uncommon in similar ET complexes. These findings illustrate that 1 provided a new platform for multi-phase transitions and multi-switches adjusted by selective metal-to-metal ET.
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Affiliation(s)
- Yin-Shan Meng
- Dalian University of Technology, State Key Laboratory of Fine Chemicals, 2 Linggong Rd., Dalian, 116024, China., 116024, Dalian, CHINA
| | - Nian-Tao Yao
- Dalian University of Technology, State Key Laboratory of Fine Chemicals, CHINA
| | - Liang Zhao
- Dalian University of Technology, State Key Laboratory of Fine Chemicals, CHINA
| | - Cheng Yi
- Dalian University of Technology, State Key Laboratory of Fine Chemicals, CHINA
| | - Qiang Liu
- Dalian University of Technology, State Key Laboratory of Fine Chemicals, CHINA
| | - Ya-Ming Li
- Dalian University of Technology, State Key Laboratory of Fine Chemicals, CHINA
| | - Hiroki Oshio
- Dalian University of Technology, State Key Laboratory of Fine Chemicals, CHINA
| | - Tao Liu
- Dalian University of Technology, State Key Laboratory of Fine Chemicals, CHINA
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Mudoi PP, Choudhury A, Li Y, Lescouëzec R, Marimuthu R, Gogoi N. Observation of Protonation-Induced Spin State Switching in a Cyanido-Bridged {Fe 2Co 2} Molecular Square. Inorg Chem 2021; 60:17705-17714. [PMID: 34751574 DOI: 10.1021/acs.inorgchem.1c02302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The self-assembly of [Co(MeTPyA)(CH3COO)]PF6 (1) and [Fe(bbp)(CN)3]2- affords a cyanido-bridged square-shaped {Fe2Co2} tetranuclear complex, [{Co(MeTPyA)(μ2-NC)2Fe(bbp)(CN)}2]·3H2O (2; MeTPyA = tris((3,5-dimethylpyrazol-1-yl)methyl)amine and H2bbp = bis(2-benzimidazolyl)pyridine). The possibility of inducing an intramolecular electron transfer coupled spin transition in 2 by employing protonation as an external stimulant is explored. UV-visible spectrophotometric measurements, electrochemical and 1H NMR studies establish that a reversible intramolecular electron transfer coupled spin transition can be triggered in 2 upon addition of either acid or base.
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Affiliation(s)
- Prashurya Pritam Mudoi
- Department of Chemical Sciences, Tezpur University, Napaam 784028, Sonitpur, Assam, India
| | - Anup Choudhury
- Department of Chemical Sciences, Tezpur University, Napaam 784028, Sonitpur, Assam, India
| | - Yanling Li
- Institut Parisien de Chimie Moléculaire-CNRS UMR 8232, Sorbonne Université, 4 place Jussieu, 75252 Paris cedex 05, France
| | - Rodrigue Lescouëzec
- Institut Parisien de Chimie Moléculaire-CNRS UMR 8232, Sorbonne Université, 4 place Jussieu, 75252 Paris cedex 05, France
| | - Rajendiran Marimuthu
- Organometallics and Materials Chemistry Lab, Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Nayanmoni Gogoi
- Department of Chemical Sciences, Tezpur University, Napaam 784028, Sonitpur, Assam, India
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Jiménez JR, Xu B, El Said H, Li Y, von Bardeleben J, Chamoreau LM, Lescouëzec R, Shova S, Visinescu D, Alexandru MG, Cano J, Julve M. Field-induced single ion magnet behaviour of discrete and one-dimensional complexes containing [bis(1-methylimidazol-2-yl)ketone]-cobalt(II) building units. Dalton Trans 2021; 50:16353-16363. [PMID: 34734603 DOI: 10.1039/d1dt02441h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We describe herein the first examples of six-coordinate CoII single-ion magnets (SIMs) based on the β-diimine Mebik ligand [Mebik = bis(1-methylimidazol-2-yl)ketone]: two mononuclear [CoII(Rbik)2L2] complexes and one mixed-valence {CoIII2CoII}n chain of formulas [CoII(Mebik)(H2O)(dmso)(μ-NC)2CoIII2(μ-2,5-dpp)(CN)6]n·1.4nH2O (3) [L = NCS (1), NCSe (2) and 2,5-dpp = 2,5-bis(2-pyridyl)pyrazine (3)]. Two bidentate Mebik molecules plus two monodentate N-coordinated pseudohalide groups in cis positions build somewhat distorted octahedral surroundings around the high-spin cobalt(II) ions in 1 and 2. The diamagnetic [CoIII2(μ-2,5-dpp)(CN)8]2- metalloligand coordinates the paramagnetic [CoII(Mebik)(H2O)(dmso)]2+ complex cations in a bis-monodentate fashion to afford neutral zigzag heterobimetallic chains in 3. Ab initio calculations, and cryomagnetic dc (2.0-300 K) and ac (2.0-12 K) measurements as well as EPR spectroscopy for 1-3 show the existence of magnetically isolated high-spin cobalt(II) ions with D values of 59.84-89.90 (1), 66.32-93.90 (2) and 70.40-127.20 cm-1 (3) and field-induced slow relaxation of the magnetization, being thus new examples of SIMs with transversal magnetic anisotropy. The analysis of their relaxation dynamics reveals that the relaxation of the magnetization occurs by the Raman (with values of the n parameter covering the range 6.0-6.8) and direct spin-phonon processes.
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Affiliation(s)
- Juan-Ramón Jiménez
- Sorbonne Université, Institut Parisien de Chimie Moléculaire, UMR CNRS 8232, 4 place Jussieu, F-75252 Paris, France.
| | - Buqing Xu
- Sorbonne Université, Institut Parisien de Chimie Moléculaire, UMR CNRS 8232, 4 place Jussieu, F-75252 Paris, France.
| | - Hasnaa El Said
- Sorbonne Université, Institut Parisien de Chimie Moléculaire, UMR CNRS 8232, 4 place Jussieu, F-75252 Paris, France.
| | - Yanling Li
- Sorbonne Université, Institut Parisien de Chimie Moléculaire, UMR CNRS 8232, 4 place Jussieu, F-75252 Paris, France.
| | - Jurgen von Bardeleben
- Sorbonne Université, Institut des NanoSciences de Paris, UMR CNRS 7588, 4 place Jussieu, F-75252 Paris, France
| | - Lise-Marie Chamoreau
- Sorbonne Université, Institut Parisien de Chimie Moléculaire, UMR CNRS 8232, 4 place Jussieu, F-75252 Paris, France.
| | - Rodrigue Lescouëzec
- Sorbonne Université, Institut Parisien de Chimie Moléculaire, UMR CNRS 8232, 4 place Jussieu, F-75252 Paris, France.
| | - Sergiu Shova
- "Petru Poni" Institute of Macromolecular Chemistry, Romanian Academy, Aleea Grigore Ghica Vodă 41-A, RO-700487 Iasi, Romania
| | - Diana Visinescu
- Coordination and Supramolecular Chemistry Laboratory, "Ilie Murgulescu" Institute of Physical Chemistry, Romanian Academy, Splaiul Independentei 202, Bucharest 060021, Romania
| | - Maria-Gabriela Alexandru
- Department of Inorganic Chemistry, Physical Chemistry and Electrochemistry, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1-7 Gh. Polizu Street, 011061 Bucharest, Romania.
| | - Joan Cano
- Departament de Química Inorgànica/Instituto de Ciencia Molecular (ICMol), Universitat de València, C/Catedrático José Beltrán 2, 46990 Paterna, Valencia, Spain.
| | - Miguel Julve
- Departament de Química Inorgànica/Instituto de Ciencia Molecular (ICMol), Universitat de València, C/Catedrático José Beltrán 2, 46990 Paterna, Valencia, Spain.
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Alexandru MG, Visinescu D, Cula B, Shova S, Rabelo R, Moliner N, Lloret F, Cano J, Julve M. A rare isostructural series of 3d-4f cyanido-bridged heterometallic squares obtained by assembling [Fe III{HB(pz) 3}(CN) 3] - and Ln III ions: synthesis, X-ray structure and cryomagnetic study. Dalton Trans 2021; 50:14640-14652. [PMID: 34581372 DOI: 10.1039/d1dt02512k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new series of cyanido-bridged {FeIIILnIII}2 neutral molecular squares of general formula [Fe{HB(pz)3}(CN)(μ-CN)2Ln(NO3)2(pyim)(Ph3PO)]2·2CH3CN [Ln = Ce (1), Pr (2), Nd (3), Gd (4), Tb (5), Dy (6) and Er (7); {HB(pz)3}- = hydrotris(pyrazolyl)borate, pyim = 2-(1H-imidazol-2-yl)pyridine and Ph3PO = triphenylphosphine oxide] were obtained by reacting the low-spin [Fe{HB(pz)3}(CN)3]- species with the preformed [LnIII(pyim)(NO3)2(pyim)(Ph3PO)]+ complex anions (generated in situ by mixing the nitrate salt of each Ln(III) ion with pyim and Ph3PO molecules). Single-crystal X-ray diffraction studies show that 1-7 are isostructural compounds that crystallize in the triclinic P1̄ space group. Their crystal structures consist of centrosymmetric cyanido-bridged {FeIIILnIII}2 molecular squares where two [Fe{HB(pz)3}(CN)3]- units adopt bis-monodentate coordination modes towards two [LnIII(pyim)(NO3)2(pyim)(Ph3PO)]+ moieties. The cis-oriented convergent sites from both low-spin FeIII and LnIII fragments form a quasi square-shaped molecule in which the 3d and 4f ions alternatively occupy the corners of the square. Both FeIII ions show a distorted octahedral surrounding (C3v symmetry), whereas the LnIII ions exhibit a distorted muffin-like geometry (Cs symmetry) in 1-7. The intramolecular FeIII⋯LnIII distances across the two cyanido-bridges range from ca. 5.48/5.46 up to ca. 5.58/5.61 Å. The molecular squares in 1-7 are interlinked through hydrogen bonds, weak π⋯π stacking and very weak C-H⋯π type interactions into three-dimensional supramolecular networks. The analysis of the solid-state direct-current (dc) magnetic susceptibility data of 1-7 in the temperature range 1.9-300 K reveals the occurrence of weak intra- and intermolecular antiferromagnetic interactions. The small intramolecular antiferromagnetic couplings in 4 compare well with those previously reported for parent systems. Although the coexistence of the spin-orbit coupling (SOC) of the low-spin iron(III) and lanthanide(III) ions in the remaining compounds together with the ligand field effects mask the visualization and make difficult the evaluation of the possible magnetic interactions in them, we were able to do it through a SOC model applied on exact or effective Hamiltonians. Frequency-dependent alternating current magnetic susceptibility signals in the temperature range 2.0-9.0 K under zero and non-zero static fields were observed for 5-7 which indicate slow magnetic relaxation (SMM) behavior. The usual absence of χ''M maxima moved us to estimate their energy barriers through ln(χ''M/ χ'M) vs. 1/T plots, obtaining values from 25 to 40 cm-1.
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Affiliation(s)
- Maria-Gabriela Alexandru
- Department of Inorganic Chemistry, Physical Chemistry and Electrochemistry, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1-7 Gh. Polizu Street, 011061 Bucharest, Romania
| | - Diana Visinescu
- Coordination and Supramolecular Chemistry Laboratory, "Ilie Murgulescu" Institute of Physical Chemistry, Romanian Academy, Splaiul Independentei 202, Bucharest 060021, Romania.
| | - Beatrice Cula
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489 Berlin, Germany
| | - Sergiu Shova
- "Petru Poni" Institute of Macromolecular Chemistry, Ro, an Academy, mani, Aleea Grigore Ghica Vodă 41-A, RO-700487 Iasi, Romania
| | - Renato Rabelo
- Departament de Química Inorgànica/Instituto de Ciencia Molecular, Universitat de València, C/Catedrático José Beltrán 2, 46980 Paterna, València, Spain.
| | - Nicolás Moliner
- Departament de Química Inorgànica/Instituto de Ciencia Molecular, Universitat de València, C/Catedrático José Beltrán 2, 46980 Paterna, València, Spain.
| | - Francesc Lloret
- Departament de Química Inorgànica/Instituto de Ciencia Molecular, Universitat de València, C/Catedrático José Beltrán 2, 46980 Paterna, València, Spain.
| | - Joan Cano
- Departament de Química Inorgànica/Instituto de Ciencia Molecular, Universitat de València, C/Catedrático José Beltrán 2, 46980 Paterna, València, Spain.
| | - Miguel Julve
- Departament de Química Inorgànica/Instituto de Ciencia Molecular, Universitat de València, C/Catedrático José Beltrán 2, 46980 Paterna, València, Spain.
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Meng L, Deng YF, Zhang YZ. Anion-Dependent Electron Transfer in the Cyanide-Bridged [Fe 2Co 2] Capsules. Inorg Chem 2021; 60:14330-14335. [PMID: 34491733 DOI: 10.1021/acs.inorgchem.1c01952] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A family of molecular capsules, {[(Tp*)Fe(CN)3Co(bpyC═N(CH2)7N═Cbpy)]2[X]2}·sol (1, X = ClO4, sol = 6DMF; 2, X = PF6, sol = 6DMF; 3, X = OTf, sol = 6DMF; 4, X = BPh4, sol = 2DMF; Tp* = hydrotris(3,5-dimethylpyrazol-1-yl)borate; bpy = 2,2'-bipyridine), were prepared via the Schiff-base condensation of the aldehyde-substituted bpy (bpyCHO) and 1,7-diaminoheptane (H2N(CH2)7NH2). All the complexes contain the same cyanide-bridged cationic square cores ([Fe2Co2]2+), which are encapsuled by the flexible alkyl chains. Variable-temperature single-crystal X-ray diffraction, FT-IR spectra, and magnetic studies reveal the abrupt and complete, thermo- and photo-induced electron-transfer-coupled spin transition for 1-3, while the pure high-spin phase for 4. Such distinct behavior is attributed to the effective long-range cooperative interactions mediated by the intercluster π-π couplings in 1-3, which, however, are significantly blocked in 4 due to the steric effect of interstitial BPh4- anions. Furthermore, the shift in the thermally induced transition temperatures of 254 K for 1, 233 K for 2, and 187 K for 3, respectively, is likely correlated to the variable H···O and H···F interactions between the solvent molecules, anions, and the bipyridine ligands of the [Fe2Co2] squares, suggesting the significant anion-dependent effect in such a system.
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Affiliation(s)
- Lingyi Meng
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Yi-Fei Deng
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Yuan-Zhu Zhang
- Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
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29
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Rath NP, Holmes SM. Structure-property studies of a new {FeIII2MnII} complex. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Meng L, Deng YF, Liu S, Zheng Z, Zhang YZ. A smart post-synthetic route towards [Fe2Co2] molecular capsules with electron transfer and bidirectional switching behaviors. Sci China Chem 2021. [DOI: 10.1007/s11426-021-1043-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Yadav J, Mondal DJ, Konar S. High-temperature electron transfer coupled spin transition (ETCST) with hysteresis in a discrete [Fe 2Co 2] Prussian blue analogue. Chem Commun (Camb) 2021; 57:5925-5928. [PMID: 34013926 DOI: 10.1039/d1cc01160j] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A thermoresponsive Fe-Co based discrete Prussian blue analogue (PBA) with the general formula [Fe(Tp)(CN)3]2[Co{en(Bn)py}]2(ClO4)2·4MeOH·4H2O i.e. [1·4MeOH·4H2O] is reported, which discloses a sharp and high temperature ETCST along with a wide hysteresis of 10 K observed for its desolvated complex 1.
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Affiliation(s)
- Jyoti Yadav
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Madhya Pradesh, 462066, India.
| | - Dibya Jyoti Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Madhya Pradesh, 462066, India.
| | - Sanjit Konar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Madhya Pradesh, 462066, India.
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32
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Kamilya S, Ghosh S, Mehta S, Mondal A. Effect of Ligand Modulation on Metal-to-Metal Electron Transfer in a Series of [Fe 2Co 2] Molecular Square Complexes. J Phys Chem A 2021; 125:4775-4783. [PMID: 33890768 DOI: 10.1021/acs.jpca.1c02032] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of three new cyanide-bridged [FeCo] molecular square complexes, namely, {[Fe(Tp*)(CN)3]2[Co(L)2]2}(BF4)2·2DMF (L = bik (1), bik* (2), and vbik (3); Tp* = hydrotris(3,5-dimethylpyrazol-1-yl)borate, bik = bis(1-methyl-1H-imidazol-2-yl)ketone, bik* = bis(1-ethyl-1H-imidazol-2-yl)ketone, and vbik = bis(1-vinyl-1H-imidazol-2-yl)ketone; DMF = dimethylformamide) were synthesized and characterized by single-crystal X-ray diffraction analyses and by magnetic, electrochemical, and spectroscopic measurements. Magnetic studies reveal that all three complexes exhibit temperature-induced metal-to-metal electron transfer (MMET) from a high-spin Co(II) center to a low-spin Fe(III) center, transforming a high-temperature paramagnetic {FeIIILS-CN-CoIIHS} ground state into a low-temperature diamagnetic {FeIILS-CN-CoIIILS} state with a decrease in the temperature from 300 to 100 K. Complexes 1 and 3 show the interconversion of the paramagnetic {FeIIILS-CN-CoIIHS} ground state into a diamagnetic {FeIILS-CN-CoIIILS} state in a single-step transition with T1/2 values of 180 and 186 K, respectively, while a two-step MMET with T1/2 value of 214 and 178 K was observed for complex 2.
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Affiliation(s)
- Sujit Kamilya
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C. V. Raman Road, Bangalore 560012, India
| | - Subrata Ghosh
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C. V. Raman Road, Bangalore 560012, India
| | - Sakshi Mehta
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C. V. Raman Road, Bangalore 560012, India
| | - Abhishake Mondal
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C. V. Raman Road, Bangalore 560012, India
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Ghosh S, Kamilya S, Pramanik T, Mohanty A, Rouzières M, Herchel R, Mehta S, Mondal A. Thermo- and photoinduced spin state switching in an iron(II) 2D coordination network associated with large light-induced thermal hysteresis and tuning of dimensionality via ligand modulation. Dalton Trans 2021; 50:7725-7735. [PMID: 33988205 DOI: 10.1039/d1dt00212k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three iron(ii) complexes, [Fe(L1)2(NCS)2(MeOH)2] (1), [Fe(L1)2(NCSe)2(MeOH)2] (2), and [Fe(L2)2(NCS)2]n (3) (L1 = 2,5-dipyridyl-3,4-ethylenedioxythiophene and L2 = 2,5-diethynylpyridinyl-3,4-ethylenedioxythiophene), have been synthesized using redox-active luminescent ethylenedioxythiophene (EDOT)-based ligands, and characterized by variable temperature single-crystal X-ray diffraction, (photo)magnetic, optical reflectivity, and spectroscopy studies. Magneto-structural investigations revealed that 1 and 2 are mononuclear with a FeN4O2 octahedral coordination geometry and remain in a high-spin (HS) (S = 2) state in a temperature range of 2-280 K. Interestingly, a 2D coordination network structure with FeN6 surrounding each iron center was observed for 3, which exhibits reversible thermo-induced spin-state switching between the paramagnetic high-spin (HS) (S = 2) and diamagnetic low-spin (LS) (S = 0) states at around 105 K (T1/2). Furthermore, optical reflectivity and photomagnetic measurements at low temperature confirmed that 3 shows reversible ON/OFF switching between the photoinduced excited paramagnetic HS metastable state and diamagnetic LS state under light irradiation (ON mode using red light and OFF mode using green light). Finally, the photoinduced excited HS state can be reversibly relaxed back to the diamagnetic ground LS state by heating the system at ca. 88 K (TLIESST = 88 K) (light-induced excited spin state trapping (LIESST) effect). Furthermore, 3 also showed an exciting and unique 18 K wide light-induced thermal hysteresis (LITH) effect above liquid nitrogen temperature (100 K). DFT and CASSCF level theoretical calculations were utilized to better understand the magneto-structural correlations of these complexes.
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Affiliation(s)
- Subrata Ghosh
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
| | - Sujit Kamilya
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
| | - Titas Pramanik
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
| | - Ashutosh Mohanty
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
| | - Mathieu Rouzières
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, UMR 5031, 33600 Pessac, France
| | - Radovan Herchel
- Department of Inorganic Chemistry, Faculty of Science, Palacký University, CZ-771 46 Olomouc, Czech Republic
| | - Sakshi Mehta
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
| | - Abhishake Mondal
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
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Kaushik K, Ghosh S, Kamilya S, Rouzières M, Mehta S, Mondal A. Reversible Photo- and Thermo-Induced Spin-State Switching in a Heterometallic { 5d-3d} W 2Fe 2 Molecular Square Complex. Inorg Chem 2021; 60:7545-7552. [PMID: 33929177 DOI: 10.1021/acs.inorgchem.1c01014] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Following the complex-as-a-ligand strategy, self-assembly of [W(CN)8]3- and iron(II) with bidentate nitrogen donor ligand bik (bik = bis(1-methyl-1H-imidazol-2-yl)ketone) ligand affords a cyanide-bridged [W2Fe2] molecular square complex [HNBu3]2{[W(CN)8]2[Fe(bik)2]2}·6H2O·CH3OH (1). The complex was characterized by single-crystal X-ray diffraction analyses, (photo)magnetic studies, optical reflectivity, electrochemical studies, and spectroscopic studies. Structural analyses revealed that in the [W2Fe2] square motif tungsten(V) and iron(II) centers reside in an alternate corner of the square and are bridged by the cyanide ligands. Complex 1 exhibits thermo-induced spin crossover (SCO) between {WV (S = 1/2) - FeIILS (S = 0)} and {WV (S = 1/2) - FeIIHS (S = 2)} pairs near room temperature and photoinduced spin-state switching with TLIESST = 70 K under light irradiation at low temperature. To the best of our knowledge, 1 represents the first complex containing iron(II) and [WV(CN)8]3- units exhibiting both SCO and photomagnetic effect.
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Affiliation(s)
- Krishna Kaushik
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C. V. Raman Road, Bangalore 560012, India
| | - Subrata Ghosh
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C. V. Raman Road, Bangalore 560012, India
| | - Sujit Kamilya
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C. V. Raman Road, Bangalore 560012, India
| | - Mathieu Rouzières
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, CRPP, UMR 5031, 33600 Pessac, France
| | - Sakshi Mehta
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C. V. Raman Road, Bangalore 560012, India
| | - Abhishake Mondal
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C. V. Raman Road, Bangalore 560012, India
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36
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Huang W, Ma X, Sato O, Wu D. Controlling dynamic magnetic properties of coordination clusters via switchable electronic configuration. Chem Soc Rev 2021; 50:6832-6870. [PMID: 34151907 DOI: 10.1039/d1cs00101a] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Large-sized coordination clusters have emerged as a new class of molecular materials in which many metal atoms and organic ligands are integrated to synergize their properties. As dynamic magnetic materials, such a combination of multiple components functioning as responsive units has many advantages over monometallic systems due to the synergy between constituent components. Understanding the nature of dynamic magnetism at an atomic level is crucial for realizing the desired properties, designing responsive molecular nanomagnets, and ultimately unlocking the full potential of these nanomagnets for practical applications. Therefore, this review article highlights the recent development of large-sized coordination clusters with dynamic magnetic properties. These dynamic properties can be associated with spin transition, electron transfer, and valence fluctuation through their switchable electronic configurations. Subsequently, the article also highlights specialized characterization techniques with different timescales for supporting switching mechanisms, chemistry, and properties. Afterward, we present an overview of coordination clusters (such as cyanide-bridged and non-cyanide assemblies) with dynamic magnetic properties, namely, spin transition and electron transfer in magnetically bistable systems and mixed-valence complexes. In particular, the response mechanisms of coordination clusters are highlighted using representative examples with similar transition principles to gain insights into spin state and mixed-valence chemistry. In conclusion, we present possible solutions to challenges related to dynamic magnetic clusters and potential opportunities for a wide range of intelligent next-generation devices.
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Affiliation(s)
- Wei Huang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis & Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China.
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37
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Ghosh S, Bagchi S, Kamilya S, Mondal A. Effect of ligand substituents and tuning the spin-state switching in manganese(iii) complexes. Dalton Trans 2021; 50:4634-4642. [PMID: 33720257 DOI: 10.1039/d1dt00284h] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Three mononuclear manganese(iii) complexes based on flexible hexadentate ligands obtained from the condensation of N,N'-bis(3-aminopropyl)ethylenediamine and salicylaldehyde or salicylaldehyde with substitutions at the 5 or 3,5 positions, namely [Mn(X-sal2-323)](BPh4) (X = 5 H, 1; X = 5 Br, 2, and X = 3,5 Br, 3) have been synthesized. The impact of ligand substituents has been studied by variable temperature single-crystal X-ray diffraction analyses, and magnetic, spectroscopic and electrochemical investigations. The complexes have an analogous monocationic MnN4O2 surrounding offered by the flexible hexadentate ligand in a distorted octahedral geometry. Complex 1 remains in the high spin state over the entire temperature range, while complex 2 shows a reversible and complete two-step thermo-induced spin-state switching. An incomplete spin-state switching from a high spin to an intermediate high-spin low-spin (1 : 1) state was observed for complex 3. Single-crystal X-ray structural studies show the presence of three different spin states in 2 during the occurrence of the spin-state switching process. Electrochemical investigations showed that the reduced state of manganese(iii) centers in 3 is easily accessible in comparison to complexes 1 and 2.
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Affiliation(s)
- Subrata Ghosh
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India.
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38
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Visinescu D, Alexandru MG, Dumitrescu DG, Shova S, Moliner N, Lloret F, Julve M. Cyanido-bridged {Fe IIILn III} heterobimetallic chains assembled through the [Fe III{HB(pz) 3}(CN) 3] − complex as metalloligand: synthesis, crystal structure and magnetic properties. CrystEngComm 2021. [DOI: 10.1039/d1ce00626f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The first isostructural series of cyanido-bridged 3d–4f chains showing a unique zig-zag motif have been obtained by using the heteroleptic [FeIII{HB(pz)3}(CN)3]− complex as a metalloligand towards the preformed [LnIII(bpdo)(NO3)2(H2O)]+ species.
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Affiliation(s)
- Diana Visinescu
- Coordination and Supramolecular Chemistry Laboratory
- “Ilie Murgulescu” Institute of Physical Chemistry
- Romanian Academy
- Bucharest 060021
- Romania
| | - Maria-Gabriela Alexandru
- Department of Inorganic Chemistry, Physical Chemistry and Electrochemistry
- Faculty of Applied Chemistry and Materials Science
- University Politehnica of Bucharest
- 011061 Bucharest
- Romania
| | | | - Sergiu Shova
- “Petru Poni” Institute of Macromolecular Chemistry
- Romanian Academy
- RO-700487 Iasi
- Romania
| | - Nicolás Moliner
- Departament de Química Inorgànica/Instituto de Ciencia Molecular
- Universitat de València
- 46980 Paterna
- Spain
| | - Francesc Lloret
- Departament de Química Inorgànica/Instituto de Ciencia Molecular
- Universitat de València
- 46980 Paterna
- Spain
| | - Miguel Julve
- Departament de Química Inorgànica/Instituto de Ciencia Molecular
- Universitat de València
- 46980 Paterna
- Spain
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39
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Zimara J, Stevens H, Oswald R, Demeshko S, Dechert S, Mata RA, Meyer F, Schwarzer D. Time-Resolved Spectroscopy of Photoinduced Electron Transfer in Dinuclear and Tetranuclear Fe/Co Prussian Blue Analogues. Inorg Chem 2020; 60:449-459. [PMID: 33332100 DOI: 10.1021/acs.inorgchem.0c03249] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The dynamics of the photodriven charge transfer-induced spin transition (CTIST) in two Fe/Co Prussian Blue Analogues (PBAs) are revealed by femtosecond IR and UV/vis pump-probe spectroscopy. Depending on temperature, the known tetranuclear square-type complex [Co2Fe2(CN)6(tp*)2(4,4'-dtbbpy)4](PF6)2 (1) exists in two electronic states. In acetonitrile solution, at <240 K, the low temperature (LT) phase is prevalent consisting of low-spin Fe(II) and low-spin Co(III), [FeIILSCoIIILS]2. Temperature rise is the reason behind thermally-induced CTIST toward the high temperature (HT) phase consisting of low-spin Fe(III) and high-spin Co(II), [FeIIILSCoIIHS]2, being prevalent at >300 K. Photoexcitation into the intervalence charge transfer (IVCT) band of the LT phase at 800 nm induces electron transfer in one Fe-Co edge of PBA 1 and produces a [FeIIILSCoIILS] intermediate which by spin-crossover (SCO) is stabilized within 400 fs to a long-lived (>1 ns) [FeIIILSCoIIHS] species. In contrast, IVCT excitation of the HT phase at 400 nm generates a [FeIILSCoIIIHS] species with a lifetime of 3.6 ps. Subsequent back-electron transfer populates the vibrationally hot ground state, which thermalizes within 8 ps. The newly synthesized dinuclear PBA, [CoFe(CN)3(tp*)(pz*4Lut)]ClO4 (2), provides a benchmark of the HT phase of 1, i.e., [FeIIILSCoIIHS], as verified by variable temperature magnetic susceptibility measurements and 57Fe Mössbauer spectroscopy. The photoinduced charge transfer dynamics of PBA 2 indeed are almost identical to that of the HT phase of PBA 1 with a lifetime of the excited [FeIILSCoIIIHS] species of 3.8 ps.
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Affiliation(s)
- Jennifer Zimara
- Max-Planck-Institute for Biophysical Chemistry, Am Fassberg 11, D-37077 Göttingen, Germany
| | - Hendrik Stevens
- University of Göttingen, Institute for Inorganic Chemistry, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Rainer Oswald
- University of Göttingen, Institute for Physical Chemistry, Tammannstrasse 6, D-37077 Göttingen, Germany
| | - Serhiy Demeshko
- University of Göttingen, Institute for Inorganic Chemistry, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Sebastian Dechert
- University of Göttingen, Institute for Inorganic Chemistry, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Ricardo A Mata
- University of Göttingen, Institute for Physical Chemistry, Tammannstrasse 6, D-37077 Göttingen, Germany
| | - Franc Meyer
- University of Göttingen, Institute for Inorganic Chemistry, Tammannstrasse 4, D-37077 Göttingen, Germany.,International Center for Advanced Studies of Energy Conversion (ICASEC), Tammannstrasse 6, D-37077 Göttingen, Germany
| | - Dirk Schwarzer
- Max-Planck-Institute for Biophysical Chemistry, Am Fassberg 11, D-37077 Göttingen, Germany
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40
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Ghosh S, Kamilya S, Rouzières M, Herchel R, Mehta S, Mondal A. Reversible Spin-State Switching and Tuning of Nuclearity and Dimensionality via Nonlinear Pseudohalides in Cobalt(II) Complexes. Inorg Chem 2020; 59:17638-17649. [PMID: 33174721 DOI: 10.1021/acs.inorgchem.0c02887] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The self-assembly of a macrocyclic tetradentate ligand, cobalt(II) tetrafluoroborate, and nonlinear pseudohalides (dicyanamide and tricyanomethanide) has led to two cobalt(II) complexes, {[Co(L)(μ1,5-dca)](BF4)·MeOH}n (1) and [Co2(L)2(μ1,5-tcm)2](BF4)2 (2) (L = N,N'-di-tert-butyl-2,11-diaza[3,3](2,6)pyridinophane; dca- = dicyanamido; tcm- = tricyanomethanido). Both complexes were characterized by single-crystal X-ray diffraction, spectroscopic, magnetic, and electrochemical studies. Structural analyses revealed that 1 displays a one-dimensional (1D) coordination polymer containing [Co(L)]2+ repeating units bridged by μ1,5-dicyanamido groups in cis positions, while 2 represents a discreate dinuclear cobalt(II) molecule bridged by two μ1,5-tricyanomethanido groups in a cis conformation. Both complexes have a CoN6 coordination environment around each cobalt center offered by the tetradentate ligand and cis coordinating bridging ligands. Complex 1 exhibits a high-spin (S = 3/2) state of cobalt(II) in the temperature range of 2-300 K with a weak ferromagnetic coupling between two dicyanamido-bridged cobalt(II) centers. Interestingly, complex 2 exhibits reversible spin-state switching associated with spin-spin coupling. Complexes 1 and 2 also exhibit interesting redox-stimuli-based reversible paramagnetic high-spin cobalt(II) to diamagnetic low-spin cobalt(III) conversion, offering an additional way to switch magnetic properties. A detailed theoretical calculation was consistent with the stated results.
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Affiliation(s)
- Subrata Ghosh
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India
| | - Sujit Kamilya
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India
| | - Mathieu Rouzières
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, CRPP, UMR 5031, 33600 Pessac, France
| | - Radovan Herchel
- Department of Inorganic Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, CZ-771 46 Olomouc, Czech Republic
| | - Sakshi Mehta
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India
| | - Abhishake Mondal
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C V Raman Road, Bangalore 560012, India
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41
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Nihei M. Molecular Prussian Blue Analogues: From Bulk to Molecules and Low-dimensional Aggregates. CHEM LETT 2020. [DOI: 10.1246/cl.200428] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Masayuki Nihei
- Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
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42
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Kamilya S, Ghosh S, Li Y, Dechambenoit P, Rouzières M, Lescouëzec R, Mehta S, Mondal A. Two-Step Thermoinduced Metal-to-Metal Electron Transfer and ON/OFF Photoswitching in a Molecular [Fe2Co2] Square Complex. Inorg Chem 2020; 59:11879-11888. [DOI: 10.1021/acs.inorgchem.0c02053] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sujit Kamilya
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C. V. Raman Road, Bangalore 560012, India
| | - Subrata Ghosh
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C. V. Raman Road, Bangalore 560012, India
| | - Yanling Li
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, UMR 8232, 4 place Jussieu, Paris 750005, France
| | - Pierre Dechambenoit
- Centre de Recherche Paul Pascal, Université Bordeaux, CNRS, UMR 5031, Pessac 33600, France
| | - Mathieu Rouzières
- Centre de Recherche Paul Pascal, Université Bordeaux, CNRS, UMR 5031, Pessac 33600, France
| | - Rodrigue Lescouëzec
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, UMR 8232, 4 place Jussieu, Paris 750005, France
| | - Sakshi Mehta
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C. V. Raman Road, Bangalore 560012, India
| | - Abhishake Mondal
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C. V. Raman Road, Bangalore 560012, India
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43
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Li Y, Benchohra A, Xu B, Baptiste B, Béneut K, Parisiades P, Delbes L, Soyer A, Boukheddaden K, Lescouëzec R. Pressure‐Induced Conversion of a Paramagnetic FeCo Complex into a Molecular Magnetic Switch with Tuneable Hysteresis. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202008051] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Yanling Li
- Sorbonne Université Institut Parisien de Chimie Moléculaire CNRS UMR 8232 4 place Jussieu 75252 Paris cedex 5 France
| | - Amina Benchohra
- Sorbonne Université Institut Parisien de Chimie Moléculaire CNRS UMR 8232 4 place Jussieu 75252 Paris cedex 5 France
| | - Buqin Xu
- Sorbonne Université Institut Parisien de Chimie Moléculaire CNRS UMR 8232 4 place Jussieu 75252 Paris cedex 5 France
| | - Benoît Baptiste
- Sorbonne Université Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC) UMR 7590 CNRS, UMR 206 IRD Museum National d'Histoire Naturelle MNHN 4 place Jussieu 75005 Paris France
| | - Keevin Béneut
- Sorbonne Université Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC) UMR 7590 CNRS, UMR 206 IRD Museum National d'Histoire Naturelle MNHN 4 place Jussieu 75005 Paris France
| | - Paraskevas Parisiades
- Sorbonne Université Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC) UMR 7590 CNRS, UMR 206 IRD Museum National d'Histoire Naturelle MNHN 4 place Jussieu 75005 Paris France
| | - Ludovic Delbes
- Sorbonne Université Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC) UMR 7590 CNRS, UMR 206 IRD Museum National d'Histoire Naturelle MNHN 4 place Jussieu 75005 Paris France
| | - Alain Soyer
- Sorbonne Université Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC) UMR 7590 CNRS, UMR 206 IRD Museum National d'Histoire Naturelle MNHN 4 place Jussieu 75005 Paris France
| | - Kamel Boukheddaden
- Université Paris-Saclay UVSQ, Groupe d'Etudes de la Matière Condensée, CNRS UMR No 8635 45 Avenue des Etats-Unis 78035 Versailles cedex France
| | - Rodrigue Lescouëzec
- Sorbonne Université Institut Parisien de Chimie Moléculaire CNRS UMR 8232 4 place Jussieu 75252 Paris cedex 5 France
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44
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Li Y, Benchohra A, Xu B, Baptiste B, Béneut K, Parisiades P, Delbes L, Soyer A, Boukheddaden K, Lescouëzec R. Pressure‐Induced Conversion of a Paramagnetic FeCo Complex into a Molecular Magnetic Switch with Tuneable Hysteresis. Angew Chem Int Ed Engl 2020; 59:17272-17276. [DOI: 10.1002/anie.202008051] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Indexed: 11/09/2022]
Affiliation(s)
- Yanling Li
- Sorbonne Université Institut Parisien de Chimie Moléculaire CNRS UMR 8232 4 place Jussieu 75252 Paris cedex 5 France
| | - Amina Benchohra
- Sorbonne Université Institut Parisien de Chimie Moléculaire CNRS UMR 8232 4 place Jussieu 75252 Paris cedex 5 France
| | - Buqin Xu
- Sorbonne Université Institut Parisien de Chimie Moléculaire CNRS UMR 8232 4 place Jussieu 75252 Paris cedex 5 France
| | - Benoît Baptiste
- Sorbonne Université Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC) UMR 7590 CNRS, UMR 206 IRD Museum National d'Histoire Naturelle MNHN 4 place Jussieu 75005 Paris France
| | - Keevin Béneut
- Sorbonne Université Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC) UMR 7590 CNRS, UMR 206 IRD Museum National d'Histoire Naturelle MNHN 4 place Jussieu 75005 Paris France
| | - Paraskevas Parisiades
- Sorbonne Université Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC) UMR 7590 CNRS, UMR 206 IRD Museum National d'Histoire Naturelle MNHN 4 place Jussieu 75005 Paris France
| | - Ludovic Delbes
- Sorbonne Université Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC) UMR 7590 CNRS, UMR 206 IRD Museum National d'Histoire Naturelle MNHN 4 place Jussieu 75005 Paris France
| | - Alain Soyer
- Sorbonne Université Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC) UMR 7590 CNRS, UMR 206 IRD Museum National d'Histoire Naturelle MNHN 4 place Jussieu 75005 Paris France
| | - Kamel Boukheddaden
- Université Paris-Saclay UVSQ, Groupe d'Etudes de la Matière Condensée, CNRS UMR No 8635 45 Avenue des Etats-Unis 78035 Versailles cedex France
| | - Rodrigue Lescouëzec
- Sorbonne Université Institut Parisien de Chimie Moléculaire CNRS UMR 8232 4 place Jussieu 75252 Paris cedex 5 France
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45
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Ghosh S, Kamilya S, Das M, Mehta S, Boulon ME, Nemec I, Rouzières M, Herchel R, Mondal A. Effect of Coordination Geometry on Magnetic Properties in a Series of Cobalt(II) Complexes and Structural Transformation in Mother Liquor. Inorg Chem 2020; 59:7067-7081. [DOI: 10.1021/acs.inorgchem.0c00538] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Subrata Ghosh
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C. V. Raman Road, Bangalore 560012, India
| | - Sujit Kamilya
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C. V. Raman Road, Bangalore 560012, India
| | - Mayurika Das
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C. V. Raman Road, Bangalore 560012, India
| | - Sakshi Mehta
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C. V. Raman Road, Bangalore 560012, India
| | - Marie-Emmanuelle Boulon
- Photon Science Institute, Alan Turing Building, office 3.315, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Ivan Nemec
- Department of Inorganic Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, CZ-771 46 Olomouc, Czech Republic
- Central European Institute of Technology, CEITEC BUT, Technická 3058/10, 61600 Brno, Czech Republic
| | - Mathieu Rouzières
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, CRPP, UMR 5031, 33600 Pessac, France
| | - Radovan Herchel
- Department of Inorganic Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, CZ-771 46 Olomouc, Czech Republic
| | - Abhishake Mondal
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Sir C. V. Raman Road, Bangalore 560012, India
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46
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Li J, Wu S, Su S, Kanegawa S, Sato O. Manipulating Slow Magnetic Relaxation by Light in a Charge Transfer {Fe
2
Co} Complex. Chemistry 2020; 26:3259-3263. [DOI: 10.1002/chem.202000154] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 01/21/2020] [Indexed: 01/05/2023]
Affiliation(s)
- Junqiu Li
- Institute for Materials Chemistry and EngineeringKyushu University 744 Motooka Nishi-ku Fukuoka 819-0395 Japan
| | - Shuqi Wu
- Institute for Materials Chemistry and EngineeringKyushu University 744 Motooka Nishi-ku Fukuoka 819-0395 Japan
| | - Shengqun Su
- Institute for Materials Chemistry and EngineeringKyushu University 744 Motooka Nishi-ku Fukuoka 819-0395 Japan
| | - Shinji Kanegawa
- Institute for Materials Chemistry and EngineeringKyushu University 744 Motooka Nishi-ku Fukuoka 819-0395 Japan
| | - Osamu Sato
- Institute for Materials Chemistry and EngineeringKyushu University 744 Motooka Nishi-ku Fukuoka 819-0395 Japan
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47
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Chen J, Sekine Y, Okazawa A, Sato H, Kosaka W, Miyasaka H. Chameleonic layered metal-organic frameworks with variable charge-ordered states triggered by temperature and guest molecules. Chem Sci 2020; 11:3610-3618. [PMID: 34094049 PMCID: PMC8152584 DOI: 10.1039/d0sc00684j] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 03/04/2020] [Indexed: 01/05/2023] Open
Abstract
Molecular materials whose electronic states are multiply varied depending on external stimuli are among the most promising targets for the development of multiply accessible molecular switches. Here, we report a honeycomb layer composed of tetraoxolene-bridged iron (Fe) subunits whose charge-ordered states are multiply variable via thermal treatments and solvation/desolvation with the crystallinity intact. The compound is (NPr4)2[Fe2(Cl2An)3] (1-d; NPr4 + = tetra-n-propylammonium; Cl2An2- = 2,5-dichloro-3,6-dihydroxo-1,4-benzoquinonate), which possesses three charge-ordered states: a low-temperature (LT) phase [(Fe3+)2(Cl2An2-)(Cl2An˙3-)2]2-; an intermediate (IM) phase [(Fe2.5+)2(Cl2An2-)(Cl2An2.5-)2]2-; and a high-temperature (HT) phase [(Fe2+)2(Cl2An2-)3]2- that varies according to temperature. In addition, the LT phase of 1-d is reversibly changeable to another IM phase in its solvated compound 1 via a solvation/desolvation process at room temperature. This example demonstrates a new multiple-switching system based on electron transfer and host-guest chemistry in a charge-flexible metal-organic framework.
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Affiliation(s)
- Jian Chen
- Institute for Materials Research, Tohoku University 2-1-1 Katahira, Aoba-ku Sendai 980-8577 Japan
- Department of Chemistry, Graduate School of Science, Tohoku University 6-3 Aramaki-Aza-Aoba, Aoba-ku Sendai 980-8578 Japan
| | - Yoshihiro Sekine
- Institute for Materials Research, Tohoku University 2-1-1 Katahira, Aoba-ku Sendai 980-8577 Japan
- Department of Chemistry, Graduate School of Science, Tohoku University 6-3 Aramaki-Aza-Aoba, Aoba-ku Sendai 980-8578 Japan
| | - Atsushi Okazawa
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo 3-8-1 Komaba Meguro-ku Tokyo 153-8902 Japan
| | - Hiroyasu Sato
- Application Laboratory, Rigaku Corporation 3-9-12, Matsubara-cho Akishima-shi Tokyo 196-8666 Japan
| | - Wataru Kosaka
- Institute for Materials Research, Tohoku University 2-1-1 Katahira, Aoba-ku Sendai 980-8577 Japan
- Department of Chemistry, Graduate School of Science, Tohoku University 6-3 Aramaki-Aza-Aoba, Aoba-ku Sendai 980-8578 Japan
| | - Hitoshi Miyasaka
- Institute for Materials Research, Tohoku University 2-1-1 Katahira, Aoba-ku Sendai 980-8577 Japan
- Department of Chemistry, Graduate School of Science, Tohoku University 6-3 Aramaki-Aza-Aoba, Aoba-ku Sendai 980-8578 Japan
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48
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Jiménez J, Glatz J, Benchohra A, Gontard G, Chamoreau L, Meunier J, Bousseksou A, Lescouëzec R. Electron Transfer in the Cs⊂{Mn
4
Fe
4
} Cubic Switch: A Soluble Molecular Model of the MnFe Prussian‐Blue Analogues. Angew Chem Int Ed Engl 2020; 59:8089-8093. [DOI: 10.1002/anie.201916199] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 01/11/2020] [Indexed: 11/09/2022]
Affiliation(s)
- Juan‐Ramón Jiménez
- Institut Parisien de Chimie Moléculaire—CNRS UMR 8232UPMC—Paris 6Sorbonne Université 4 place Jussieu 75252 Paris cedex 05 France
| | - Jana Glatz
- Institut Parisien de Chimie Moléculaire—CNRS UMR 8232UPMC—Paris 6Sorbonne Université 4 place Jussieu 75252 Paris cedex 05 France
| | - Amina Benchohra
- Institut Parisien de Chimie Moléculaire—CNRS UMR 8232UPMC—Paris 6Sorbonne Université 4 place Jussieu 75252 Paris cedex 05 France
| | - Geoffrey Gontard
- Institut Parisien de Chimie Moléculaire—CNRS UMR 8232UPMC—Paris 6Sorbonne Université 4 place Jussieu 75252 Paris cedex 05 France
| | - Lise‐Marie Chamoreau
- Institut Parisien de Chimie Moléculaire—CNRS UMR 8232UPMC—Paris 6Sorbonne Université 4 place Jussieu 75252 Paris cedex 05 France
| | - Jean‐François Meunier
- CNRSUniversité de ToulouseLaboratoire de Chimie de Coordination 205 route de Narbonne 31077 Toulouse France
| | - Azzedine Bousseksou
- CNRSUniversité de ToulouseLaboratoire de Chimie de Coordination 205 route de Narbonne 31077 Toulouse France
| | - Rodrigue Lescouëzec
- Institut Parisien de Chimie Moléculaire—CNRS UMR 8232UPMC—Paris 6Sorbonne Université 4 place Jussieu 75252 Paris cedex 05 France
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Jiménez J, Glatz J, Benchohra A, Gontard G, Chamoreau L, Meunier J, Bousseksou A, Lescouëzec R. Electron Transfer in the Cs⊂{Mn
4
Fe
4
} Cubic Switch: A Soluble Molecular Model of the MnFe Prussian‐Blue Analogues. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916199] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Juan‐Ramón Jiménez
- Institut Parisien de Chimie Moléculaire—CNRS UMR 8232UPMC—Paris 6Sorbonne Université 4 place Jussieu 75252 Paris cedex 05 France
| | - Jana Glatz
- Institut Parisien de Chimie Moléculaire—CNRS UMR 8232UPMC—Paris 6Sorbonne Université 4 place Jussieu 75252 Paris cedex 05 France
| | - Amina Benchohra
- Institut Parisien de Chimie Moléculaire—CNRS UMR 8232UPMC—Paris 6Sorbonne Université 4 place Jussieu 75252 Paris cedex 05 France
| | - Geoffrey Gontard
- Institut Parisien de Chimie Moléculaire—CNRS UMR 8232UPMC—Paris 6Sorbonne Université 4 place Jussieu 75252 Paris cedex 05 France
| | - Lise‐Marie Chamoreau
- Institut Parisien de Chimie Moléculaire—CNRS UMR 8232UPMC—Paris 6Sorbonne Université 4 place Jussieu 75252 Paris cedex 05 France
| | - Jean‐François Meunier
- CNRSUniversité de ToulouseLaboratoire de Chimie de Coordination 205 route de Narbonne 31077 Toulouse France
| | - Azzedine Bousseksou
- CNRSUniversité de ToulouseLaboratoire de Chimie de Coordination 205 route de Narbonne 31077 Toulouse France
| | - Rodrigue Lescouëzec
- Institut Parisien de Chimie Moléculaire—CNRS UMR 8232UPMC—Paris 6Sorbonne Université 4 place Jussieu 75252 Paris cedex 05 France
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50
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Ma YJ, Hu JX, Han SD, Pan J, Li JH, Wang GM. Manipulating On/Off Single-Molecule Magnet Behavior in a Dy(III)-Based Photochromic Complex. J Am Chem Soc 2020; 142:2682-2689. [PMID: 31955567 DOI: 10.1021/jacs.9b13461] [Citation(s) in RCA: 217] [Impact Index Per Article: 54.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Exploitation of room temperature (RT) photochromism and photomagnetism to induce single-molecule magnet (SMM) behavior has potential applications toward optical switches and magnetic memories, and remains a tremendous challenge in the development of new bulk magnets. Herein, a series of chain complexes [Ln3(H-HEDP)3(H2-HEDP)3]·2H3-TPT·H4-HEDP·10H2O (QDU-1; Ln = Dy (QDU-1(Dy)), Gd (QDU-1(Gd)), and Y (QDU-1(Y)); HEDP = hydroxyethylidene diphosphonate; TPT = 2,4,6-tri(4-pyridyl)-1,3,5-triazine) were synthesized by solvothermal reactions. All the compounds exhibited reversible photochromic and photomagnetic behaviors via UV light irradiation at RT, induced by the photogenerated radicals via a photoinduced electron transfer (PET) mechanism. More importantly, the PET process induced significant variations in magnetic interactions for the Dy(III) congener. Strong ferromagnetic coupling with remarkably slow magnetic relaxation without applied dc fields was observed between DyIII ions and photogenerated O• radicals, showing SMM behavior after RT illumination. For the first time, we observed the reversible RT photochromism and photomagnetism in the lanthanide-based materials. This work realized the radicals-actuated on/off SMM behavior via RT light irradiation, providing a new strategy for constructing the light-induced SMMs.
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Affiliation(s)
- Yu-Juan Ma
- College of Chemistry and Chemical Engineering , Qingdao University , Shandong 266071 , P. R. China
| | - Ji-Xiang Hu
- College of Chemistry and Chemical Engineering , Qingdao University , Shandong 266071 , P. R. China
| | - Song-De Han
- College of Chemistry and Chemical Engineering , Qingdao University , Shandong 266071 , P. R. China
| | - Jie Pan
- College of Chemistry and Chemical Engineering , Qingdao University , Shandong 266071 , P. R. China
| | - Jin-Hua Li
- College of Chemistry and Chemical Engineering , Qingdao University , Shandong 266071 , P. R. China
| | - Guo-Ming Wang
- College of Chemistry and Chemical Engineering , Qingdao University , Shandong 266071 , P. R. China
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