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Biswas S, Havlicek L, Nemec I, Salitros I, Mandal L, Neugebauer P, Kuppusamy SK, Ruben M. Levamisole Based Co(II) Single-Ion Magnet. Chem Asian J 2024; 19:e202400574. [PMID: 38870468 DOI: 10.1002/asia.202400574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 06/13/2024] [Accepted: 06/13/2024] [Indexed: 06/15/2024]
Abstract
A new Co(II) complex, [Co(NCS)2(L)2] (1) has been synthesized based on levamisole (L) as a new ligand. Single-crystal X-ray diffraction analyses confirm that the Co(II) ion is having a distorted tetrahedral coordination geometry in the complex. Notably strong intramolecular S⋅⋅⋅S and S⋅⋅⋅N interactions has been confirmed by employing Quantum Theory of Atoms in Molecules (QTAIM). These intramolecular interactions occur among the sulfur and nitrogen atoms of the levamisole ligands and also the nitrogen atoms of the thiocyanate. Direct current (dc) magnetic analyses reveal presence of zero field splitting (ZFS) and large magnetic anisotropy on Co(II). Detailed ab initio ligand field theory calculations quantitatively predicted the magnitude of ZFS. Prominent field-induced single-ion magnet (SIM) behavior was observed for 1 from dynamic magnetization measurements. Slow magnetic relaxation follows an Orbach mechanism with the effective energy barrier Ueff=29.6 (7) K and relaxation time τo=1.4 (4)×10-9 s.
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Affiliation(s)
- Soumava Biswas
- Dr. Vishwanath Karad MIT World Peace University Survey No, 124, Paud Rd, Kothrud, Pune, 411038, Maharashtra, India
| | - Lubomir Havlicek
- Central European Institute of Technology, Brno University of Technology, Purkynova 656/123, 61200, Brno, Czech Republic
- Institute of Physics of Materials, Czech Academy of Sciences, Zizkova 22, 61662, Brno, Czech Republic
| | - Ivan Nemec
- Central European Institute of Technology, Brno University of Technology, Purkynova 656/123, 61200, Brno, Czech Republic
- Department of Inorganic Chemistry, Faculty of Science, Palacky University, 17. listopadu 12, 77147, Olomouc, Czech Republic
| | - Ivan Salitros
- Central European Institute of Technology, Brno University of Technology, Purkynova 656/123, 61200, Brno, Czech Republic
- Department of Inorganic Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava., Bratislava, SK-81237, Slovakia
| | - Leena Mandal
- Department of Chemistry, Polba Mahavidyalaya, Polba Hooghly, PIN-712148, West Bengal, India
| | - Petr Neugebauer
- Central European Institute of Technology, Brno University of Technology, Purkynova 656/123, 61200, Brno, Czech Republic
| | - Senthil Kumar Kuppusamy
- Institute of Quantum Materials and Technologies (IQMT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Mario Ruben
- Institute of Quantum Materials and Technologies (IQMT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz1, 76344, Eggenstein-Leopoldshafen, Germany
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2
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Singh V, Suresh LT, Sutter JP, Bar AK. Selective fluoride sensing by a novel series of lanthanide-based one-dimensional coordination polymers through intramolecular proton transfer. Dalton Trans 2024; 53:7436-7449. [PMID: 38592674 DOI: 10.1039/d4dt00598h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
A novel series of one-dimensional coordination polymers (CPs) is achieved via a facile one-pot synthesis strategy employing the nitrate salts of trivalent lanthanides, a pentadentate chelating ligand, and triphenylphosphine oxide at a controlled stoichiometry under ambient conditions. All the CPs are characterized comprehensively using spectroscopic, X-ray crystallographic and magnetometric studies. The CPs are found to be thermally stable up to a significantly high temperature and resistant to water for an indefinite time. They are photoactive and exhibit selective fluoride ion (F-) sensing with excellent efficiency both colorimetrically and fluorimetrically in the solid-state as well as in solution. The presence of F- concomitantly sensitizes the photoluminescence enhancement and visual decolourization of the CPs in solution owing to the ground-state intra-molecular proton transfer. The photophysical response of the CPs to F- in solution was found to be instantaneous (<30 s). The sensitivity of detection is observed to be significantly high over a wide range of F- concentrations, covering the beneficial and detrimental domains of F- concentrations in drinking water. The limit of detection (LoD) under ambient conditions was found to be in the micromolar (μM) range-the best being 0.22 μM found using UV-vis spectrometry and 7.5 μM using fluorimetry. In comparison, the USEPA standard cut-off for the upper limit of F- concentration in drinking water is 211 μM, and the LoD of measuring F- concentration using the USEPA standard method using a fluoride-selective electrode is 26.3 μM. The CPs display markedly high selectivity toward F- with negligible-to-no interference from the commonly abundant ions (Cl-, Br-, I-, CH3CO2-, CO32-, SO42-, HPO42-, NH4+, Na+, K+, Mg2+, and Ca2+) in terms of UV-vis spectral change. Moreover, they also exhibit solid-state IR-spectrometric sensitivity towards F- under ambient conditions.
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Affiliation(s)
- Vaibhav Singh
- Department of Chemistry, Indian Institute of Science Education and Research Tirupati, Tirupati - 517507, Andhra Pradesh, India.
| | - Lakshmi Thachanadan Suresh
- Department of Chemistry, Indian Institute of Science Education and Research Tirupati, Tirupati - 517507, Andhra Pradesh, India.
| | - Jean-Pascal Sutter
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS), Université de Toulouse, CNRS, Toulouse, France.
| | - Arun Kumar Bar
- Department of Chemistry, Indian Institute of Science Education and Research Tirupati, Tirupati - 517507, Andhra Pradesh, India.
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3
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Flosbach NT, Rasche B, Rochels L, Disch S, Wickleder C, Adlung M, Fischer P, Wickleder MS. The Divalent Lanthanoid Triflates Ln(CF 3SO 3) 2(CH 3CN) (Ln=Sm, Eu): Structure, Luminescence, and Magnetism. Chemistry 2024; 30:e202400462. [PMID: 38501801 DOI: 10.1002/chem.202400462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 03/12/2024] [Accepted: 03/14/2024] [Indexed: 03/20/2024]
Abstract
The reaction of the trivalent lanthanoide triflates Ln(OTf)3 (Ln=Sm, Eu; OTf=CF3SO3 -) with the respective metals in acetonitrile leads to the Ln(II)-triflates Eu(OTf)2(CH3CN) (monoclinic, P21/n, Z=4, a=1053.54(1), b=610.28(5), c=1946.92(2) pm, β =98.611(4)) and Sm(OTf)2(CH3CN) (monoclinic, P21/n, Z=4, a=1054.41(4), b=612.16(2), c=1952.65(7) pm, β =98.524(2)). The isotypic strontium compound Sr(OTf)2(CH3CN) (monoclinic, P21/n, Z=4, a=1056.39(5), b=610.05(3), c=1950.1(1) pm, β =98.900(2)°) has been obtained from SrCO3 and triflic acid. The compounds have been investigated by X-ray diffraction, vibrational spectroscopy, luminescence spectroscopy, cyclic voltammetry, thermal analysis, and magnetic measurements.
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Affiliation(s)
- Niko T Flosbach
- Universität zu Köln, Institut für Anorganische Chemie, Greinstraße 6, 50939, Köln, Germany
| | - Bertold Rasche
- Universität Stuttgart, Institut für Anorganische Chemie, Pfaffenwaldring 55, 70569, Stuttgart
| | - Leonhard Rochels
- Universität Duisburg-Essen, Anorganische Chemie und Center for Nanointegration Duisburg-Essen (CENIDE), Universitätsstraße 5-7, 45141, Essen
| | - Sabrina Disch
- Universität Duisburg-Essen, Anorganische Chemie und Center for Nanointegration Duisburg-Essen (CENIDE), Universitätsstraße 5-7, 45141, Essen
| | - Claudia Wickleder
- Universität Siegen, Department Chemie/Biologie Anorganische Chemie, Adolf-Reichwein-Straße, 57068, Siegen
| | - Matthias Adlung
- Universität Siegen, Department Chemie/Biologie Anorganische Chemie, Adolf-Reichwein-Straße, 57068, Siegen
| | - Pia Fischer
- Universität Siegen, Department Chemie/Biologie Anorganische Chemie, Adolf-Reichwein-Straße, 57068, Siegen
| | - Mathias S Wickleder
- Universität zu Köln, Institut für Anorganische Chemie, Greinstraße 6, 50939, Köln, Germany
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Karpiuk TE, Mahato S, Storr T, Leznoff DB. Unusually short unsupported Au(III)⋯Au(III) aurophilic contacts in emissive lanthanide tetracyanoaurate(III) complexes. Chem Commun (Camb) 2024; 60:3914-3917. [PMID: 38502135 DOI: 10.1039/d4cc00468j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
A series of [Au(CN)4]- salts with lanthanide 2,2'-bipyridine dioxide cations features Au(III) aurophilic interactions between [Au(CN)4]- groups, with Au⋯Au distances of 3.3603(4) Å and 3.4354(4) Å that are shorter than any previously reported. Computations predict the interactions to be weakly attractive; packing effects appear to also contribute to the close contacts. The materials are emissive: there is no Au(III)-based luminescence, but for Ln = Eu the PLQY of 29% is surprisingly high compared to related analogues.
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Affiliation(s)
- Thomas E Karpiuk
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, V5A 1S6, Canada.
| | - Samyadeb Mahato
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, V5A 1S6, Canada.
| | - Tim Storr
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, V5A 1S6, Canada.
| | - Daniel B Leznoff
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, V5A 1S6, Canada.
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5
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Pramanik A, Das R, Jyoti Boruah P, Majumder S, Mohanta S. A very rare fluorescent chemosensor of zinc(II) exhibiting AIEE, ESIPT and TICT: Spectroscopic, crystallographic and theoretical exploration. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 308:123780. [PMID: 38142491 DOI: 10.1016/j.saa.2023.123780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 12/11/2023] [Accepted: 12/15/2023] [Indexed: 12/26/2023]
Abstract
The basic systems in this study are HL (1; 1:2 condensation product of 2,6-diformyl-4-ethylphenol and o-anisidine) and its ZnII and CdII complexes of composition [ZnII(LH)Cl2]·CH3OH (2) and [CdII(LH)Cl2] (3), all of which are synthesized and characterized by CHN elemental analyses, single crystal X-ray crystallography, powder X-ray diffraction (PXRD) and fourier transform infrared (FT-IR) spectrum. It has been established from the following experimental and theoretical studies that 1 is a fluorescent turn on sensor of ZnII ion and it exhibits all of excited state intramolecular proton transfer (ESIPT), photoinduced electron transfer (PET), twisted intramolecular charge transfer (TICT) and aggregation induced enhanced emission (AIEE): (i) Detailed absorption and emission (steady state / time resolved) studies in various single solvents, in solvent mixtures, with pH variation, with various single metal ions, with mixtures of metal ions, on varying temperature and on varying viscosity; (ii) dynamic light scattering (DLS) and scanning electron microscopy (SEM) in solvent mixtures; (iii) density functional theory (DFT) and time dependent density functional theory (TD-DFT) calculations in ground and excites states of 1-3. It is shown that 1 can be efficaciously applied in inkless writing with the "write - erase - write" facility. The mechanisms/reasons of the observed properties have been addressed. The difference in fluorescence of ZnII and CdII complexes, unusual case of crystal structures of probe and complexes with ZnII and CdII, unusual features in the structures of 2 and 3 as well as a structure-property correlation have been discussed.
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Affiliation(s)
- Abhishek Pramanik
- Department of Chemistry, University of Calcutta, 92 A.P.C Road, Kolkata 700009, India
| | - Rampada Das
- Department of Chemistry, University of Calcutta, 92 A.P.C Road, Kolkata 700009, India
| | - Palash Jyoti Boruah
- Department of Chemistry, National Institute of Technology, Meghalaya, Shillong, Meghalaya, 793003, India
| | - Samit Majumder
- Department of Chemistry, Bhairab Ganguly College, Feeder Road, Belghoria, Kolkata 700056, West Bengal, India.
| | - Sasankasekhar Mohanta
- Department of Chemistry, University of Calcutta, 92 A.P.C Road, Kolkata 700009, India.
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6
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Wan S, Musielak N, Oliver AG, Jaffe A. Controlling Electron Delocalization in Vanadium-Based Hybrid Bronzes through Molecular Templation. Angew Chem Int Ed Engl 2023:e202314523. [PMID: 37917037 DOI: 10.1002/anie.202314523] [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: 09/27/2023] [Revised: 10/31/2023] [Accepted: 11/02/2023] [Indexed: 11/03/2023]
Abstract
We show that the conductivity of hybrid vanadium bronzes-mixed-valence organic-inorganic vanadium oxides-can be tuned over six orders of magnitude through judicious choice of molecular component. By systematically varying the steric profile, charge density, and propensity to hydrogen bond across a series of eight diammonium-based molecules, we engender multiple distinct motifs of V-O connectivity within the two-dimensional vanadium oxide layers of a family of bulk crystalline hybrid materials. A combination of single-crystal and powder X-ray diffraction analysis, variable-temperature electrical transport measurements, and a range of spectroscopic methods, including UV/Visible diffuse reflectance, X-ray photoelectron, and electron paramagnetic resonance are employed to probe how vanadium oxide layer topology correlates with electron localization. Specifically, alkylammonium molecules yield hybrids featuring more corrugated layers that contain V-O tetrahedra as well as a higher ratio of corner-sharing to edge-sharing polyhedra and that exhibit highly localized electronic behavior, while alkyl bipyridinium molecules yield more regular layers with polyhedral edge-sharing that show substantially delocalized electronic behavior. This work allows for the development of design principles based on structure-property relationships and brings the charge transport capabilities of hybrid vanadium bronzes to more technologically relevant levels.
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Affiliation(s)
- Suchen Wan
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Nicole Musielak
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Allen G Oliver
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Adam Jaffe
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, 46556, USA
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7
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Pimenov OA, Grazhdan KV, Zavalishin MN, Gamov GA. Geometry and UV-Vis Spectra of Au 3+ Complexes with Hydrazones Derived from Pyridoxal 5'-Phosphate: A DFT Study. Int J Mol Sci 2023; 24:ijms24098412. [PMID: 37176119 PMCID: PMC10179053 DOI: 10.3390/ijms24098412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 05/05/2023] [Accepted: 05/06/2023] [Indexed: 05/15/2023] Open
Abstract
Gold(III) complexes with different ligands can provide researchers with a measure against pathogenic microorganisms with antibiotic resistance. We reported in our previous paper that the UV-Vis spectra of different protonated species of complexes formed by gold(III) and five hydrazones derived from pyridoxal 5'-phosphate are similar to each other and to the spectra of free protonated hydrazones. The present paper focuses on the reasons of the noted similarity in electron absorption spectra. The geometry of different protonated species of complexes of gold(III) and hydrazones (15 structures in total) was optimized using the density functional theory (DFT). The coordination polyhedron of gold(III) bond critical points were further studied to identify the symmetry of the gold coordination sphere and the type of interactions that hold the complex together. The UV-Vis spectra were calculated using TD DFT methods. The molecular orbitals were analyzed to interpret the calculated spectra.
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Affiliation(s)
- Oleg A Pimenov
- General Chemical Technology Department, Ivanovo State University of Chemistry and Technology, Sheremetevskii pr. 7, 153000 Ivanovo, Russia
| | - Konstantin V Grazhdan
- General Chemical Technology Department, Ivanovo State University of Chemistry and Technology, Sheremetevskii pr. 7, 153000 Ivanovo, Russia
| | - Maksim N Zavalishin
- General Chemical Technology Department, Ivanovo State University of Chemistry and Technology, Sheremetevskii pr. 7, 153000 Ivanovo, Russia
| | - George A Gamov
- General Chemical Technology Department, Ivanovo State University of Chemistry and Technology, Sheremetevskii pr. 7, 153000 Ivanovo, Russia
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8
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Jiang N, Nakritskaia DD, Xie J, Ramanathan A, Varganov SA, La Pierre HS. Tuning symmetry and magnetic blocking of an exchange-coupled lanthanide ion in isomeric, tetrametallic complexes: [LnCl 6(TiCp 2) 3]. Chem Sci 2023; 14:4302-4307. [PMID: 37123176 PMCID: PMC10132101 DOI: 10.1039/d2sc06263a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Accepted: 03/23/2023] [Indexed: 05/02/2023] Open
Abstract
The synthesis and magnetic properties of two pairs of isomeric, exchange-coupled complexes, [LnCl6(TiCp2)3] (Ln = Gd, Tb), are reported. In each isomeric pair, the central lanthanide ion adopts either a pseudo-octahedral (O-Ln) or trigonal prismatic geometry (TP-Ln) yielding complexes with C 1 or C 3h molecular symmetry, respectively. Ferromagnetic exchange coupling is observed in TP-Ln as indicated by the increases in χ m T below 30 K. For TP-Gd, a fit to the susceptibility reveals ferromagnetic coupling between the Gd3+ ion and the Ti3+ ions (J = 2.90(1) cm-1). In contrast to O-Tb, which shows no single-molecule magnetic behavior, the TP-Tb complex presents slow magnetic relaxation with a 100s-blocking temperature of 2.3 K and remanent magnetization at zero field up to 3 K. The calculated electronic structures of both compounds imply that trigonal prismatic geometry of TP-Tb is critical to the observed magnetic behavior.
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Affiliation(s)
- Ningxin Jiang
- School of Chemistry and Biochemistry, Georgia Institute of Technology Atlanta Georgia 30332-0400 USA
| | | | - Jiaze Xie
- Department of Chemistry, University of Chicago Chicago Illinois 60637 USA
| | - Arun Ramanathan
- School of Chemistry and Biochemistry, Georgia Institute of Technology Atlanta Georgia 30332-0400 USA
| | - Sergey A Varganov
- Department of Chemistry, University of Nevada Reno Nevada 89557-0216 USA
| | - Henry S La Pierre
- School of Chemistry and Biochemistry, Georgia Institute of Technology Atlanta Georgia 30332-0400 USA
- Nuclear and Radiological Engineering and Medical Physics Program, School of Mechanical Engineering, Georgia Institute of Technology Atlanta Georgia 30332-0400 USA
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9
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McElhany SJ, Summers TJ, Shiery RC, Cantu DC. Analysis of the First Ion Coordination Sphere: A Toolkit to Analyze the Coordination Sphere of Ions. J Chem Inf Model 2023; 63:2699-2706. [PMID: 37083437 DOI: 10.1021/acs.jcim.3c00294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/22/2023]
Abstract
Rapid and accurate approaches to characterizing the coordination structure of an ion are important for designing ligands and quantifying structure-property trends. Here, we introduce AFICS (Analysis of the First Ion Coordination Sphere), a tool written in Python 3 for analyzing the structural and geometric features of the first coordination sphere of an ion over the course of molecular dynamics simulations. The principal feature of AFICS is its ability to quantify the distortion a coordination geometry undergoes compared to uniform polyhedra. This work applies the toolkit to analyze molecular dynamics simulations of the well-defined coordination structure of aqueous Cr3+ along with the more ambiguous structure of aqueous Eu3+ chelated to ethylenediaminetetraacetic acid. The tool is targeted for analyzing ions with fluxional or irregular coordination structures (e.g., solution structures of f-block elements) but is generalized such that it may be applied to other systems.
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Affiliation(s)
- Stuart J McElhany
- Department of Chemical and Materials Engineering, University of Nevada, Reno, Reno, Nevada 89557, United States
| | - Thomas J Summers
- Department of Chemical and Materials Engineering, University of Nevada, Reno, Reno, Nevada 89557, United States
| | - Richard C Shiery
- Department of Chemical and Materials Engineering, University of Nevada, Reno, Reno, Nevada 89557, United States
| | - David C Cantu
- Department of Chemical and Materials Engineering, University of Nevada, Reno, Reno, Nevada 89557, United States
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10
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Pohle MH, Böhme M, Lohmiller T, Ziegenbalg S, Blechschmidt L, Görls H, Schnegg A, Plass W. Magnetic Anisotropy and Relaxation of Pseudotetrahedral [N 2 O 2 ] Bis-Chelate Cobalt(II) Single-Ion Magnets Controlled by Dihedral Twist Through Solvomorphism. Chemistry 2023; 29:e202202966. [PMID: 36468847 DOI: 10.1002/chem.202202966] [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: 09/22/2022] [Revised: 12/04/2022] [Accepted: 12/05/2022] [Indexed: 12/07/2022]
Abstract
The methanol solvomorph 1 ⋅ 2MeOH of the cobalt(II) complex [Co(LSal,2-Ph )2 ] (1) with the sterically demanding Schiff-base ligand 2-(([1,1'-biphenyl]-2-ylimino)methyl)phenol (HLSal,2-Ph ) shows the thus far largest dihedral twist distortion between the two chelate planes compared to an ideal pseudotetrahedral arrangement. The cobalt(II) ion in 1 ⋅ 2MeOH exhibits an easy-axis anisotropy leading to a spin-reversal barrier of 55.3 cm-1 , which corresponds to an increase of about 17 % induced by the larger dihedral twist compared to the solvent-free complex 1. The magnetic relaxation for 1 ⋅ 2MeOH is significantly slower compared to 1. An in-depth frequency-domain Fourier-transform (FD-FT) THz-EPR study not only allowed the direct measurement of the magnetic transition between the two lowest Kramers doublets for the cobalt(II) complexes, but also revealed the presence of spin-phonon coupling. Interestingly, a similar dihedral twist correlation is also observed for a second pair of cobalt(II)-based solvomorphs, which could be benchmarked by FD-FT THz-EPR.
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Affiliation(s)
- Maximilian H Pohle
- Institut für Anorganische und Analytische Chemie, Friedrich-Schiller-Universität Jena, Humboldtstraße 8, 07743, Jena, Germany
| | - Michael Böhme
- Institut für Anorganische und Analytische Chemie, Friedrich-Schiller-Universität Jena, Humboldtstraße 8, 07743, Jena, Germany
| | - Thomas Lohmiller
- EPR4Energy Joint Lab, Department Spins in Energy Conversion and Quantum Information Science, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Str. 16, 12489, Berlin, Germany.,present address: Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489, Berlin, Germany
| | - Sven Ziegenbalg
- Institut für Anorganische und Analytische Chemie, Friedrich-Schiller-Universität Jena, Humboldtstraße 8, 07743, Jena, Germany
| | - Louis Blechschmidt
- Institut für Anorganische und Analytische Chemie, Friedrich-Schiller-Universität Jena, Humboldtstraße 8, 07743, Jena, Germany
| | - Helmar Görls
- Institut für Anorganische und Analytische Chemie, Friedrich-Schiller-Universität Jena, Humboldtstraße 8, 07743, Jena, Germany
| | - Alexander Schnegg
- EPR4Energy Joint Lab, Department Spins in Energy Conversion and Quantum Information Science, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Str. 16, 12489, Berlin, Germany.,EPR Research Group, MPI for Chemical Energy Conversion, Stiftstr. 34-36, 45470, Mülheim an der Ruhr, Germany
| | - Winfried Plass
- Institut für Anorganische und Analytische Chemie, Friedrich-Schiller-Universität Jena, Humboldtstraße 8, 07743, Jena, Germany
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11
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Gao QF, Jiang TL, Li WZ, Tan DF, Zhang XH, Pang JY, Zhang SH. Porous and Stable Zn-Series Metal-Organic Frameworks as Efficient Catalysts for Grafting Wood Nanofibers with Polycaprolactone via a Copolymerization Approach. Inorg Chem 2023; 62:3464-3473. [PMID: 36791390 DOI: 10.1021/acs.inorgchem.2c03721] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
A hydrothermal method was used to synthesize two highly stable Zn(II) metal-organic frameworks (MOFs), namely, [Zn2(L)2(HIPA)]n (1) and [Zn9(L)6(BTEC)3(H2O)4·6H2O]n (2) (HL = 3-amino-1H-1,2,4-triazole, H2HIPA = 5-hydroxyisophthalic acid, H4BTEC = benzene-1,2,4,5-tetracarboxylic acid). The physicochemical properties of 1 and 2 were characterized using a range of analytical techniques. The scanning electron microscopy images confirmed the stability of the MOFs under heating at 120 °C for 12 h. Following their preparation, the two MOFs were used as catalysts in the grafting of poly(ε-caprolactone) on wood nanofibers (WNFs) by means of a homogeneous ring-opening polymerization protocol in an ionic liquid. The grafting ratio achieved using catalyst 1 was higher than that achieved for catalyst 2, wherein a maximum of 92.43% was obtained using the former. Under comparable reaction conditions, the grafting ratio of 1 was found to be significantly higher than those achieved using 4-dimethylamino pyridine, Sn(Oct)2, and UiO-67 catalysts. In addition, fluorescence emission was detected from the residual catalysts present in the products. The calculated electrostatic potentials and average local ionization energies indicated that the grafting of ε-caprolactone on the WNFs follows a "coordination-insertion" mechanism. Overall, these two new and efficient MOF catalysts have the potential to replace highly toxic traditional catalysts in polymerization reactions. The grafted cellulose material with fluorescence emission may also be suitable for use in biomedical applications.
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Affiliation(s)
- Qi-Feng Gao
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning, Guangxi 530004, P. R. China.,Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials Science, Nanning Normal University, Nanning, Guangxi 530000, P. R. China
| | - Tan-Lin Jiang
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning, Guangxi 530004, P. R. China.,Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials Science, Nanning Normal University, Nanning, Guangxi 530000, P. R. China
| | - Wei-Zhou Li
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning, Guangxi 530004, P. R. China.,School of Materials Science and Engineering, Xiamen University of Technology, Xiamen 361024, P. R. China
| | - Deng-Feng Tan
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials Science, Nanning Normal University, Nanning, Guangxi 530000, P. R. China
| | - Xiu-Hai Zhang
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning, Guangxi 530004, P. R. China
| | - Jin-Ying Pang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, College of Chemistry and Materials Science, Nanning Normal University, Nanning, Guangxi 530000, P. R. China.,College of Materials Science and Engineering, Guilin University of Technology, Guilin, Guangxi 541004, P. R. China
| | - Shu-Hua Zhang
- College of Chemistry, Guangdong University of Petrochemical Technology, Maoming, Guangdong 525000, P. R. China.,College of Materials Science and Engineering, Guilin University of Technology, Guilin, Guangxi 541004, P. R. China
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12
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Jungfer MR, Abram U. [ReH 3 (PPh 3 ) 4 ] - A Key Compound in the Rhenium Hydride Chemistry. Chemistry 2023; 29:e202203317. [PMID: 36628556 DOI: 10.1002/chem.202203317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 01/06/2023] [Accepted: 01/10/2023] [Indexed: 01/12/2023]
Abstract
The chemistry of the rhenium trihydrido complex [ReH3 (PPh3 )4 ] (1) has been reinvestigated. An improved synthesis and the solid-state structure of the compound as well as several reactions are reported. The solid-state structure of 1 is similar to that of [TcH3 (PPh3 )4 ] having a capped-octahedral coordination sphere. The PPh3 ligands surround the Re atom in a trigonal-pyramidal mode with a short apical Re-P bond (2.300(2) Å) and three longer basal bonds (2.429(2)-2.449(2) Å). Reactions of 1 with monodentate phosphines such as PMe3 or PBu3 give the mono-substituted complexes [ReH3 (PPh3 )3 (PMe3 )] (2) and [ReH3 (PPh3 )3 (PBu3 )] (3) under retention of the apical PPh3 ligand and substitution of one of the basal PPh3 ligands. The stability of the phosphine trihydride complexes decreases in the order PPh3 >PMe3 >PBu3 . Treatment of [ReH3 (PPh3 )4 ] with trityl hexafluorophosphate in CH3 CN does not result in a hydride abstraction, but gives the tetrahydrido cation [ReH4 (NCCH3 )(PPh3 )3 ]+ (4), while reactions with nitriles give unstable azavinylidene complexes of the composition [ReH2 (PPh3 )3 (NC(H)R)] (5). They are formed by an insertion of the nitrile into a Re-H bond. The solid-state structure of the methyl derivative [ReH2 (PPh3 )3 (NC(H)CH3 )] (5 a) was determined showing a linear Re-N-C unit with rhenium-nitrogen and nitrogen-carbon double bonds, while the N=CH-C bond is clearly bent with an angle of 124°. Two previously unknown polymorphs of [ReH5 (PPh3 )3 ] were isolated from reactions of 1 with HOC6 H3 (CH3 )2 and thiourea after prolonged heating in toluene and characterized by IR spectroscopy and X-ray diffraction.
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Affiliation(s)
- Maximilian Roca Jungfer
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Fabeckstr. 34/36, 14195, Berlin, Germany
- University of Heidelberg, Im Neuenheimer Feld 584, 69120, Heidelberg, Germany
| | - Ulrich Abram
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Fabeckstr. 34/36, 14195, Berlin, Germany
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13
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Woodhouse SS, Dais TN, Etcheverry-Berríos A, Brechin EK, Lane JR, Plieger PG. Against the Norm: Non Irving–Williams Transmetalation in Transition Metal Dimers. Inorg Chem 2022; 61:17819-17827. [DOI: 10.1021/acs.inorgchem.2c03113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sidney S. Woodhouse
- School of Natural Sciences, Massey University, Private Bag 11 222, Palmerston North4410, New Zealand
| | - Tyson N. Dais
- School of Natural Sciences, Massey University, Private Bag 11 222, Palmerston North4410, New Zealand
| | - Alvaro Etcheverry-Berríos
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, EdinburghEH93FJ, Scotland, U.K
| | - Euan K. Brechin
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, EdinburghEH93FJ, Scotland, U.K
| | - Joseph R. Lane
- Department of Chemistry, School of Science, University of Waikato, Private Bag, Hamilton3105, New Zealand
| | - Paul G. Plieger
- School of Natural Sciences, Massey University, Private Bag 11 222, Palmerston North4410, New Zealand
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14
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Mandal S, Pramanik A, Dey S, Carrella LM, Rajaraman G, Rentschler E, Mohanta S. Experimental and theoretical investigations on three Dy III4 single molecule magnets: structural and magneto-structural correlations. Dalton Trans 2022; 51:14753-14766. [PMID: 36106563 DOI: 10.1039/d2dt02348b] [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
The work in this report describes the syntheses, crystal structures, dc/ac magnetic behaviour, and theoretical calculations (both ab initio CASSCF and DFT) of three defect dicubane/planar butterfly type tetradysprosium(III) compounds of compositions [DyIII4L4(μ3-OH)2(carboxylate)2(dmf)2] (carboxylate = formate (1), acetate (2), propionate (3)), where H2L = 2-(2-hydroxy-3-ethoxybenzylideneamino)phenol. In the butterfly type structures, two DyIII centres (Dyb) occupy the body positions while two other (Dyw) units occupy the wing positions. SHAPE analyses reveal that the coordination geometries of the Dyb and Dyw centres, both octacoordinated, are triangular dodecahedron (TDD) and square antiprism (SAPR), respectively. Variable-temperature magnetic susceptibility measurements give an indication of weak antiferromagnetic interactions and variable-field magnetization measurements reveal strong anisotropy in all the three compounds. The variable-temperature/frequency in-phase/out-of-phase AC susceptibility data reveal that all these three compounds are SMMs with two relaxation channels under zero dc field; slow relaxation (SR) and fast relaxation (FR) processes could be assigned to the SAPR (Dyw) and TDD (Dyb) metal centres, respectively. The simulated Ueff and τ0 values are: 49.0 cm-1 and 1.76 × 10-7 s for 1, 30.3 cm-1 and 1.51 × 10-8 s for 2 and 23.4 cm-1 and 9.64 × 10-7 s for 3. Furthermore, ab initio CASSCF/RASSI-SO/SINGLE_ANISO calculations reveal that the ground state of DyIII centres are axial in nature with a dominating contribution from mJ = |±15/2>. The magnetization relaxation occurs via the first excited KD resulting in the large computed blocking barrier of Dyw (SAPR) centres compared to that of the Dyb (TDD) centres which corroborates the experimental measurements. The exchange parameters obtained from DFT calculations are generally in line with those obtained from the fitting of χMT vs. T in POLY_ANISO calculations. Interesting structural and magneto-structural correlations have been found, which are the major outcomes of this investigation.
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Affiliation(s)
- Shuvankar Mandal
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700 009, India.
| | - Abhishek Pramanik
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700 009, India.
| | - Sourav Dey
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Luca M Carrella
- Department of Chemistry, Johannes-Gutenberg University Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany.
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| | - Eva Rentschler
- Department of Chemistry, Johannes-Gutenberg University Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany.
| | - Sasankasekhar Mohanta
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700 009, India.
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15
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Zinc(II) and copper(II) complexes with benzothiadiazole Schiff-base ligands. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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16
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Singh V, Das D, Anga S, Sutter JP, Chandrasekhar V, Bar AK. Rigid N 3O 2-Pentadentate Ligand-Assisted Octacoordinate Mononuclear Ln(III) Complexes: Syntheses, Characterization, and Slow Magnetization Relaxation. ACS OMEGA 2022; 7:25881-25890. [PMID: 35910178 PMCID: PMC9330846 DOI: 10.1021/acsomega.2c03631] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A series of air-stable mononuclear octacoordinate Ln(III) complexes, [(L)Ln(TPPO)3]OTf (Ln = Y (1·Y); Gd (1·Gd); Tb (1·Tb); Dy (1·Dy); Ho (1·Ho); and Er (1·Er)) and [(L)Ln(TPPO)(NO3)] (Ln = Y (2·Y) and Dy (2·Dy)), are synthesized employing a rigid N3O2-pentadentate chelating ligand as the basis ligand and meridional ancillary ligands (where H2L = 2,6-diacetylpyridine bis-benzoylhydrazone, TPPO = triphenylphosphine oxide, and OTf- = trifluoromethanesulfonate). All the complexes are synthesized under aerobic conditions and characterized comprehensively by spectroscopic and X-ray crystallographic techniques. Magnetic property investigation on the polycrystalline solid samples of 1·Ln (Ln = Gd, Tb, Dy, Ho, and Er) and 2·Dy are reported. A field-induced single-molecule magnet behavior was observed for the Dy derivatives. 1·Dy exhibits the highest effective energy barrier of magnetization reversal, U eff/k B = 47 K under H dc = 1 kOe among the complexes presented herein.
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Affiliation(s)
- Vaibhav Singh
- Indian
Institute of Science Education and Research Tirupati, Tirupati 517507 AP, India
| | - Dhiraj Das
- Indian
Institute of Science Education and Research Tirupati, Tirupati 517507 AP, India
| | - Srinivas Anga
- Tata
Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad 500107, India
| | - Jean-Pascal Sutter
- Laboratoire
de Chimie de Coordination Du CNRS (LCC-CNRS), Université de Toulouse, CNRS, Toulouse 31062, France
| | | | - Arun Kumar Bar
- Indian
Institute of Science Education and Research Tirupati, Tirupati 517507 AP, India
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17
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Harriswangler C, Caneda-Martínez L, Rousseaux O, Esteban-Gómez D, Fougère O, Pujales-Paradela R, Valencia L, Fernández MI, Lepareur N, Platas-Iglesias C. Versatile Macrocyclic Platform for the Complexation of [ natY/ 90Y]Yttrium and Lanthanide Ions. Inorg Chem 2022; 61:6209-6222. [PMID: 35418232 PMCID: PMC9044452 DOI: 10.1021/acs.inorgchem.2c00378] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Indexed: 11/29/2022]
Abstract
We report a macrocyclic ligand (H3L6) based on a 3,6,10,13-tetraaza-1,8(2,6)-dipyridinacyclotetradecaphane platform containing three acetate pendant arms and a benzyl group attached to the fourth nitrogen atom of the macrocycle. The X-ray structures of the YL6 and TbL6 complexes reveal nine coordination of the ligand to the metal ions through the six nitrogen atoms of the macrocycle and three oxygen atoms of the carboxylate pendants. A combination of NMR spectroscopic studies (1H, 13C, and 89Y) and DFT calculations indicated that the structure of the YL6 complex in the solid state is maintained in an aqueous solution. The detailed study of the emission spectra of the EuL6 and TbL6 complexes revealed Ln3+-centered emission with quantum yields of 7.0 and 60%, respectively. Emission lifetime measurements indicate that the ligand offers good protection of the metal ions from surrounding water molecules, preventing the coordination of water molecules. The YL6 complex is remarkably inert with respect to complex dissociation, with a lifetime of 1.7 h in 1 M HCl. On the other hand, complex formation is fast (∼1 min at pH 5.4, 2 × 10-5 M). Studies using the 90Y-nuclide confirmed fast radiolabeling since [90Y]YL6 is nearly quantitatively formed (radiochemical yield (RCY) > 95) in a short time over a broad range of pH values from ca. 2.4 to 9.0. Challenging experiments in the presence of excess ethylenediaminetetraacetic acid (EDTA) and in human serum revealed good stability of the [90Y]YL6 complex. All of these experiments combined suggest the potential application of H3L6 derivatives as Y-based radiopharmaceuticals.
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Affiliation(s)
- Charlene Harriswangler
- Centro
de Investigacións Científicas Avanzadas (CICA) and Departamento
de Química, Facultade de Ciencias, Universidade da Coruña, 15071 Galicia, A Coruña, Spain
| | - Laura Caneda-Martínez
- Centro
de Investigacións Científicas Avanzadas (CICA) and Departamento
de Química, Facultade de Ciencias, Universidade da Coruña, 15071 Galicia, A Coruña, Spain
| | - Olivier Rousseaux
- Groupe
Guerbet, Centre de Recherche d’Aulnay-sous-Bois, BP 57400, 95943 Roissy CdG Cedex, France
| | - David Esteban-Gómez
- Centro
de Investigacións Científicas Avanzadas (CICA) and Departamento
de Química, Facultade de Ciencias, Universidade da Coruña, 15071 Galicia, A Coruña, Spain
| | - Olivier Fougère
- Groupe
Guerbet, Centre de Recherche d’Aulnay-sous-Bois, BP 57400, 95943 Roissy CdG Cedex, France
| | - Rosa Pujales-Paradela
- Centro
de Investigacións Científicas Avanzadas (CICA) and Departamento
de Química, Facultade de Ciencias, Universidade da Coruña, 15071 Galicia, A Coruña, Spain
| | - Laura Valencia
- Departamento
de Química Inorgánica, Facultad de Ciencias, Universidade de Vigo, As Lagoas, Marcosende, 36310 Pontevedra, Spain
| | - M. Isabel Fernández
- Centro
de Investigacións Científicas Avanzadas (CICA) and Departamento
de Química, Facultade de Ciencias, Universidade da Coruña, 15071 Galicia, A Coruña, Spain
| | - Nicolas Lepareur
- Univ
Rennes, Centre Eugène Marquis, Inrae, Inserm, Institut NUMECAN
(Nutrition, Métabolismes et Cancer)—UMR_A 1341, UMR_S
1241, F-35000 Rennes, France
| | - Carlos Platas-Iglesias
- Centro
de Investigacións Científicas Avanzadas (CICA) and Departamento
de Química, Facultade de Ciencias, Universidade da Coruña, 15071 Galicia, A Coruña, Spain
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18
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Yoshida T, Shabana A, Zhang H, Izuogu DC, Sato T, Fuku K, Abe H, Horii Y, Cosquer G, Hoshino N, Akutagawa T, Thom AJW, Takaishi S, Yamashita M. Insight into the Gd–Pt Bond: Slow Magnetic Relaxation of a Heterometallic Gd–Pt Complex. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2022. [DOI: 10.1246/bcsj.20210429] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Takefumi Yoshida
- Department of Chemistry, Graduate School of Science Tohoku University, 6-3 Aza-Aoba, Aramaki, Sendai 980-8578, Japan
| | - Ahmed Shabana
- Department of Chemistry, Graduate School of Science Tohoku University, 6-3 Aza-Aoba, Aramaki, Sendai 980-8578, Japan
- Chemistry Department, Faculty of Science, Mansoura University, Mansoura, 35516, Egypt
| | - Haitao Zhang
- Department of Chemistry, Graduate School of Science Tohoku University, 6-3 Aza-Aoba, Aramaki, Sendai 980-8578, Japan
| | - David Chukwuma Izuogu
- Yusuf Hamied Department of Chemistry, University of Cambridge Lensfield Road, Cambridge, CB2 1EW, UK
- Department of Pure and Industrial Chemistry University of Nigeria, Nsukka, 410001, Enugu State (Nigeria)
| | - Tetsu Sato
- Department of Chemistry, Graduate School of Science Tohoku University, 6-3 Aza-Aoba, Aramaki, Sendai 980-8578, Japan
| | - Kentaro Fuku
- Department of Chemistry, Graduate School of Science Tohoku University, 6-3 Aza-Aoba, Aramaki, Sendai 980-8578, Japan
| | - Hitoshi Abe
- Institute of Materials Structure Science High Energy Accelerator Research Organization (KEK) 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
- Department of Materials Structure Science, School of High Energy Accelerator Science, SOKENDAI(the Graduate University for Advanced Studies) 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
- 7Graduate School of Science and Engineering, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
| | - Yoji Horii
- Department of Chemistry, Nara Womens` University, Kitauoyanishimachi, Nara 630-8503, Japan
| | - Goulven Cosquer
- Department of Chemistry, Graduate School of Science Hiroshima University, 1-3-1 Kagamiyama Higashihiroshima 739-8526, Japan
| | - Norihisa Hoshino
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Japan
| | - Tomoyuki Akutagawa
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Japan
| | - Alex J. W. Thom
- Yusuf Hamied Department of Chemistry, University of Cambridge Lensfield Road, Cambridge, CB2 1EW, UK
| | - Shinya Takaishi
- Department of Chemistry, Graduate School of Science Tohoku University, 6-3 Aza-Aoba, Aramaki, Sendai 980-8578, Japan
| | - Masahiro Yamashita
- Department of Chemistry, Graduate School of Science Tohoku University, 6-3 Aza-Aoba, Aramaki, Sendai 980-8578, Japan
- School of Materials Science and Engineering Nankai University, Tianjin 300350, P.R. China
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19
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Yan H, Wang C, Chen P, Zhang YQ, Sun W. Schiff Base Tetranuclear Zn2Ln2 Single-Molecule Magnets bridged by Hydroxamic acid in association with Near-Infrared Luminescence. Dalton Trans 2022; 51:6918-6926. [DOI: 10.1039/d2dt00001f] [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 series of Zn-Ln heteronuclear SMMs formed by hexadentate compartment Schiff base Zn-precursor and lanthanoid ions were structurally and magnetically characterized, in which the two [Zn-Ln] moieties are bridged by...
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20
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Weitzner SE, Pham TA, Orme CA, Qiu SR, Wood BC. Beyond Thermodynamics: Assessing the Dynamical Softness of Hydrated Ions from First Principles. J Phys Chem Lett 2021; 12:11980-11986. [PMID: 34882417 DOI: 10.1021/acs.jpclett.1c03314] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Ion (de)hydration is a key rate-determining step in interfacial processes from corrosion to electrochemical energy storage. However, predicting the kinetics of ion (de)hydration remains challenging, prompting the use of static proxies such as hydration energy and valence. While useful for assessing thermodynamic preferences, such descriptors cannot fully capture the dynamical softness of the hydration shell that dictates kinetics. Accordingly, we use first-principles molecular dynamics to analyze hydration shell softness for a diverse set of metal cations. Three dynamic metrics are introduced to intuitively describe the bond rigidity, shape deformability, and exchange fluidity of the solvation shell. Together, these metrics capture the relevant physics in the static descriptors, while offering a far more complete and efficient representation for the overall propensity for (de)hydration. Application to the hydrated ion set demonstrates a weak connection between dynamical softness and hydration energy, confirming that dynamical descriptors of hydration are key for correctly describing ion transfer processes.
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Affiliation(s)
- Stephen E Weitzner
- Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
| | - Tuan Anh Pham
- Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
| | - Christine A Orme
- Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
| | - S Roger Qiu
- Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
| | - Brandon C Wood
- Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
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21
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Wang CM, Wu Z, Chen P, Tian YM, Sun WB. The Zn2Dy2 single-molecule magnet constructed by salen-type ligand and hydroximic acid. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.131231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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22
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Hyun SM, Reid KA, Vali SW, Lindahl PA, Powers DC. Cis-Divacant Octahedral Fe(II) in a Dimensionally Reduced Family of 2-(Pyridin-2-yl)pyrrolide Complexes. Inorg Chem 2021; 60:15617-15626. [PMID: 34590844 PMCID: PMC8969077 DOI: 10.1021/acs.inorgchem.1c02240] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Four-coordinate transition-metal complexes can adopt a diverse array of coordination geometries, with square planar and tetrahedral coordination being the most prevalent. Previously, we reported the synthesis of a trinuclear Fe(II) complex, Fe3TPM2, supported by a 3-fold-symmetric 2-pyridylpyrrolide ligand [i.e., tris(5-(pyridin-2-yl)-1H-pyrrol-2-yl)methane] that featured a rare cis-divacant octahedral (CDO) geometry at each Fe(II) center. Here, a series of truncated 2-pyridylpyrrolide ligands are described that support mono- and binuclear Fe(II) complexes that also exhibit CDO geometries. Metalation of the tetradentate ligand bis[5-(pyridin-2-yl)-1H-pyrrol-2-yl]methane (H2BPM) in tetrahydrofuran (THF) results in the binuclear complex Fe2(BPM)2(THF)2 in which both Fe(II) ions are octahedrally coordinated. The coordinated THF solvent ligands are labile: THF dissociation leads to Fe2(BPM)2, which features five-coordinate Fe(II) ions. The Fe-Fe distance in these binuclear complexes can be elongated by ligand methylation. Metalation of bis[5-(6-methylpyridin-2-yl)-1H-pyrrol-2-yl]methane (H2BPMMe) in THF leads to the formation of four-coordinate, CDO Fe(II) centers in Fe(BPMMe)2. Further ligand truncation affords bidentate ligands 2-(1H-pyrrol-2-yl)pyridine (PyrPyrrH) and 2-methyl-6-(1H-pyrrol-2-yl)pyridine (PyrMePyrrH). Metalation of these ligands in THF affords six-coordinate complexes Fe(PyrPyrr)2(THF)2 and Fe(PyrMePyrr)2(THF)2. Dissociation of labile solvent ligands provides access to four-coordinate Fe(II) complexes. Ligand disproportionation at Fe(PyrPyrr)2 results in the formation of Fe(PyrPyrr)3 and Fe(0). Ligand methylation suppresses this disproportionation and enables isolation of Fe(PyrMePyrr)2, which is rigorously CDO. Complete ligand truncation, by separating the 2-pyridylpyrrolide ligands into the constituent monodentate pyridyl and pyrrolide donors, affords Fe(Pyr)2(Pyrr)2 in which Fe(II) is tetrahedrally coordinated. Computational analysis indicates that the potential energy surface that dictates the coordination geometry in this family of four-coordinate complexes is fairly flat in the vicinity of CDO coordination. These synthetic studies provide the structural basis to explore the implications of CDO geometry on Fe-catalyzed reactions.
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Affiliation(s)
- Sung-Min Hyun
- Department of Chemistry, Texas A&M University, College Station, TX 77843, United States
| | - Kaleb A. Reid
- Department of Chemistry, Texas A&M University, College Station, TX 77843, United States
| | - Shaik Waseem Vali
- Department of Chemistry, Texas A&M University, College Station, TX 77843, United States
| | - Paul A. Lindahl
- Department of Chemistry, Texas A&M University, College Station, TX 77843, United States
| | - David C. Powers
- Department of Chemistry, Texas A&M University, College Station, TX 77843, United States
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23
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Lai JJ, Ruan ZY, Huang GZ, Liu JL, Tong ML. A high-performance dysprosium(III) single-ion magnet with quasi-Oh symmetry. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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24
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Zhu L, Dong Y, Yin B, Ma P, Li D. Improving the single-molecule magnet properties of two pentagonal bipyramidal Dy 3+ compounds by the introduction of both electron-withdrawing and -donating groups. Dalton Trans 2021; 50:12607-12618. [PMID: 34545871 DOI: 10.1039/d1dt00964h] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Two mononuclear Dy3+ compounds [Dy(bmbpen-F)X] (X = Cl, 1; Br, 2) with a pentagonal bipyramidal (PBP) geometry were obtained from N,N'-bis-(5-methyl-2-hydroxybenzyl)-N,N'-bis(5-fluoro-2-methylpyridyl)ethylenediamine (H2bmbpen-F) and dysprosium halides. The magnetic anisotropy and single-molecule magnet (SMM) behavior of these PBP compounds were regulated by introducing both electron-withdrawing F atoms into the equatorial pyridine rings and electron-donating -CH3 groups into the axial phenolic hydroxyl rings. The results of magnetic characterization show that 1 and 2 exhibit single molecule magnet behavior with magnetization reversal barriers of 990(13) and 1189(16) K under a zero dc external field and magnetic hysteresis loops up to 26 K and 36 K, respectively. The results of ab initio calculations are consistent with the experimental observations, confirming that the simultaneous introduction of electron-withdrawing groups into the equatorial positions and electron-donating groups into the axial positions can lead to PBP Dy-SMMs with improved properties.
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Affiliation(s)
- Li Zhu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China.
| | - Yubao Dong
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China.
| | - Bing Yin
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710127, P. R. China.
| | - Pengtao Ma
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Dongfeng Li
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China.
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Jungfer MR, Elsholz L, Abram U. Technetium Hydrides Revisited: Syntheses, Structures, and Reactions of [TcH3(PPh3)4] and [TcH(CO)3(PPh3)2]. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00274] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Maximilian Roca Jungfer
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Fabeckstr. 34/36, 14195 Berlin, Germany
| | - Laura Elsholz
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Fabeckstr. 34/36, 14195 Berlin, Germany
| | - Ulrich Abram
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Fabeckstr. 34/36, 14195 Berlin, Germany
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26
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27
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Fujii S, Ohtani R, Kuwabara A. Theoretical investigation of tetrahedral distortion of four-coordinate iron(II) centres in FePd(CN) 4. Dalton Trans 2021; 50:1990-1994. [PMID: 33491690 DOI: 10.1039/d0dt04155f] [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
The tetrahedral distortion of iron(ii) centres in the cyanide-bridged framework FePd(CN)4 was recently demonstrated experimentally. Here, we theoretically confirmed the electronically driven tetrahedral distortion of iron(ii) by comparing the density of states and total energies of FePd(CN)4 (d6) and ZnPd(CN)4 (d10). The calculation results suggested that a Jahn-Teller-like effect is caused on the tetrahedral geometry by the electronic effect of unequally occupied non-bonding 3d orbitals in the corresponding structure.
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Affiliation(s)
- Susumu Fujii
- Nanostructures Research Laboratory, Japan Fine Ceramics Center, 2-4-1 Mutsuno, Atsuta, Nagoya 456-8587, Japan.
| | - Ryo Ohtani
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Akihide Kuwabara
- Nanostructures Research Laboratory, Japan Fine Ceramics Center, 2-4-1 Mutsuno, Atsuta, Nagoya 456-8587, Japan.
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28
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Ohtani R, Matsunari H, Yamamoto T, Kimoto K, Isobe M, Fujii K, Yashima M, Fujii S, Kuwabara A, Hijikata Y, Noro S, Ohba M, Kageyama H, Hayami S. Responsive Four‐Coordinate Iron(II) Nodes in FePd(CN)
4. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202008187] [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]
Affiliation(s)
- Ryo Ohtani
- Department of Chemistry Faculty of Science Kyushu University 744 Motooka Nishi-ku Fukuoka 819-0395 Japan
| | - Hiromu Matsunari
- Department of Chemistry Graduate School of Science and Technology Kumamoto University 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan
| | - Takafumi Yamamoto
- Laboratory for Materials and Structures Tokyo Institute of Technology 4259 Nagatsuta, Midori Yokohama 226-8503 Japan
| | - Koji Kimoto
- Research Center for Advanced Measurement and Characterization National Institute for Materials Science 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
| | - Masaaki Isobe
- Research Center for Functional Materials National Institute for Materials Science 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
| | - Kotaro Fujii
- Department of Chemistry School of Science Tokyo Institute of Technology 2-12-1-W4-17, O-okayama, Meguro-ku Tokyo 152-8551 Japan
| | - Masatomo Yashima
- Department of Chemistry School of Science Tokyo Institute of Technology 2-12-1-W4-17, O-okayama, Meguro-ku Tokyo 152-8551 Japan
| | - Susumu Fujii
- Nanostructures Research Laboratory Japan Fine Ceramics Center 2-4-1 Mutsuno, Atsuta Nagoya 456-8587 Japan
- Center for Materials Research by Information Integration National Institute for Materials Science 1-2-1 Sengen Tsukuba Ibaraki 305-0047 Japan
| | - Akihide Kuwabara
- Nanostructures Research Laboratory Japan Fine Ceramics Center 2-4-1 Mutsuno, Atsuta Nagoya 456-8587 Japan
- Center for Materials Research by Information Integration National Institute for Materials Science 1-2-1 Sengen Tsukuba Ibaraki 305-0047 Japan
| | - Yuh Hijikata
- Institute for Chemical Reaction Design and Discovery, (WPI-ICReDD) Hokkaido University Sapporo 001-0021 Japan
| | - Shin‐ichiro Noro
- Faculty of Environmental Earth Science Hokkaido University Sapporo 060-0810 Japan
| | - Masaaki Ohba
- Department of Chemistry Faculty of Science Kyushu University 744 Motooka Nishi-ku Fukuoka 819-0395 Japan
| | - Hiroshi Kageyama
- Graduate School of Engineering Kyoto University Kyoto 615-8510 Japan
| | - Shinya Hayami
- Department of Chemistry Graduate School of Science and Technology Kumamoto University 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan
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29
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Ohtani R, Matsunari H, Yamamoto T, Kimoto K, Isobe M, Fujii K, Yashima M, Fujii S, Kuwabara A, Hijikata Y, Noro SI, Ohba M, Kageyama H, Hayami S. Responsive Four-Coordinate Iron(II) Nodes in FePd(CN) 4. Angew Chem Int Ed Engl 2020; 59:19254-19259. [PMID: 32662185 DOI: 10.1002/anie.202008187] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Indexed: 12/30/2022]
Abstract
Metal node design is crucial for obtaining structurally diverse coordination polymers (CPs) and metal-organic frameworks with desirable properties; however, FeII ions are exclusively six-coordinated. Herein, we present a cyanide-bridged three-dimensional (3D) CP, FePd(CN)4 , bearing four-coordinate FeII ions, which is synthesized by thermal treatment of a two-dimensional (2D) six-coordinate FeII CP, Fe(H2 O)2 Pd(CN)4 ⋅4 H2 O, to remove water molecules. Atomic-resolution transmission electron microscopy and powder X-ray and neutron diffraction measurements revealed that the FePd(CN)4 structure is composed of a two-fold interpenetrated PtS topology network, where the FeII center demonstrates an intermediate geometry between tetrahedral and square-planar coordination. This four-coordinate FeII center with the distorted geometry can act as a thermo-responsive flexible node in the PtS network.
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Affiliation(s)
- Ryo Ohtani
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Hiromu Matsunari
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
| | - Takafumi Yamamoto
- Laboratory for Materials and Structures, Tokyo Institute of Technology, 4259 Nagatsuta, Midori, Yokohama, 226-8503, Japan
| | - Koji Kimoto
- Research Center for Advanced Measurement and Characterization, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Masaaki Isobe
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Kotaro Fujii
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-W4-17, O-okayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Masatomo Yashima
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-W4-17, O-okayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Susumu Fujii
- Nanostructures Research Laboratory, Japan Fine Ceramics Center, 2-4-1 Mutsuno, Atsuta, Nagoya, 456-8587, Japan.,Center for Materials Research by Information Integration, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki, 305-0047, Japan
| | - Akihide Kuwabara
- Nanostructures Research Laboratory, Japan Fine Ceramics Center, 2-4-1 Mutsuno, Atsuta, Nagoya, 456-8587, Japan.,Center for Materials Research by Information Integration, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki, 305-0047, Japan
| | - Yuh Hijikata
- Institute for Chemical Reaction Design and Discovery, (WPI-ICReDD), Hokkaido University, Sapporo, 001-0021, Japan
| | - Shin-Ichiro Noro
- Faculty of Environmental Earth Science, Hokkaido University, Sapporo, 060-0810, Japan
| | - Masaaki Ohba
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Hiroshi Kageyama
- Graduate School of Engineering, Kyoto University, Kyoto, 615-8510, Japan
| | - Shinya Hayami
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
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30
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The Tyranny of Arm-Wrestling Methyls on Iron(II) Spin State in Pseudo-Octahedral [Fe(didentate)3] Complexes. CHEMISTRY 2020. [DOI: 10.3390/chemistry2020015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The connection of a sterically constrained 3-methyl-pyrazine ring to a N-methyl-benzimidazole unit to give the unsymmetrical α,α’-diimine ligand L5 has been programmed for the design of pseudo-octahedral spin-crossover [Fe(L5)3]2+ units, the transition temperature (T1/2) of which occurs in between those reported for related facial tris-didentate iron chromophores fitted with 3-methyl-pyridine-benzimidazole in a LaFe helicate (T1/2 ~ 50 K) and with 5-methyl-pyrazine-benzimidazole L2 ligands (T1/2 ~350 K). A thorough crystallographic analysis of [Fe(L5)3](ClO4)2 (I), [Ni(L5)3](ClO4)2 (II), [Ni(L5)3](BF4)2∙H2O (III), [Zn(L5)3](ClO4)2 (IV), [Ni(L5)3](BF4)2∙1.75CH3CN (V), and [Zn(L5)3](BF4)2∙1.5CH3CN (VI) shows the selective formation of pure facial [M(L5)3]2+ cations in the solvated crystals of the tetrafluoroborate salts and alternative meridional isomers in the perchlorate salts. Except for a slightly larger intra-strand interannular twist between the aromatic heterocycles in L5, the metric parameters measured in [Zn(L5)3]2+ are comparable to those reported for [Zn(L2)3]2+, where L2 is the related unconstrained ligand. This similitude is reinforced by comparable ligand-field strengths (∆oct) and nephelauxetic effects (as measured by the Racah parameters B and C) extracted from the electronic absorption spectra recorded for [Ni(L5)3]2+ and [Ni(L2)3]2+. In this context, the strictly high-spin behavior observed for [Fe(L5)3]2+ within the 5–300 K range contrasts with the close to room-temperature spin-crossover behavior of [Fe(L2)3]2+ (T1/2 = 349(5) K in acetonitrile). This can be unambiguously assigned to an intraligand arm wrestling match operating in bound L5, which prevents the contraction of the coordination sphere required for accommodating low-spin FeII. Since the analogous 3-methyl-pyridine ring in [Fe(L3)3]2+ derivatives are sometimes compatible with spin-crossover properties, the consequences of repulsive intra-strand methyl–methyl interactions are found to be amplified in [Fe(L5)3]2+ because of the much lower basicity of the 3-methyl-pyrazine ring and the resulting weaker thermodynamic compensation. The decrease of the stability constants by five orders of magnitude observed in going from [M(L2)3]2+ to [M(L5)3]2+ (M = NiII and ZnII) is diagnostic for the operation of this effect, which had been not foreseen by the authors.
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31
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Lathion T, Fürstenberg A, Besnard C, Hauser A, Bousseksou A, Piguet C. Monitoring Fe(II) Spin-State Equilibria via Eu(III) Luminescence in Molecular Complexes: Dream or Reality? Inorg Chem 2020; 59:1091-1103. [PMID: 31887022 DOI: 10.1021/acs.inorgchem.9b02713] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The modulation of light emission by Fe(II) spin-crossover processes in multifunctional materials has recently attracted major interest for the indirect and noninvasive monitoring of magnetic information storage. In order to approach this goal at the molecular level, three segmental ligand strands, L4-L6, were reacted with stoichiometric mixtures of divalent d-block cations (M(II) = Fe(II) or Zn(II)) and trivalent lanthanides (Ln(III) = La(III) or Eu(III)) in acetonitrile to give C3-symmetrical dinuclear triple-stranded helical [LnM(Lk)3]5+ cations, which can be crystallized with noncoordinating counter-anions. The divalent metal M(II) is six-coordinate in the pseudo-octahedral sites produced by the facial wrapping of the three didentate binding units, the ligand field of which induces variable Fe(II) spin-state properties in [LnFe(L4)3]5+ (strictly high-spin), [LnFe(L5)3]5+ (spin-crossover (SCO) around room temperature), and [LnFe(L6)3]5+ (SCO at very low temperature). The introduction of the photophysically active Eu(III) probe in [EuFe(Lk)3]5+ results in europium-centered luminescence modulated by variable intramolecular Eu(III) → Fe(II) energy-transfer processes. The kinetic analysis implies Eu(III) → Fe(II) quenching efficiencies close to 100% for the low-spin configuration and greater than 95% for the high-spin state. Consequently, the sensitivity of indirect luminescence detection of Fe(II) spin crossover is limited by the resulting weak Eu(III)-centered emission intensities, but the dependence of the luminescence on the temperature unambiguously demonstrates the potential of indirect lanthanide-based spin-state monitoring at the molecular scale.
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Affiliation(s)
- Timothée Lathion
- Department of Inorganic and Analytical Chemistry, and of Physical Chemistry , University of Geneva , 30 quai E. Ansermet , CH-1211 Geneva 4, Switzerland
| | - Alexandre Fürstenberg
- Department of Inorganic and Analytical Chemistry, and of Physical Chemistry , University of Geneva , 30 quai E. Ansermet , CH-1211 Geneva 4, Switzerland
| | - Céline Besnard
- Laboratory of Crystallography , University of Geneva , 24 quai E. Ansermet , CH-1211 Geneva 4, Switzerland
| | - Andreas Hauser
- Department of Inorganic and Analytical Chemistry, and of Physical Chemistry , University of Geneva , 30 quai E. Ansermet , CH-1211 Geneva 4, Switzerland
| | - Azzedine Bousseksou
- Laboratory of Coordination Chemistry (LCC) , CNRS & Université de Toulouse (UPS, INP) , 205 route de Narbonne , Toulouse 31077 Cedex 4, France
| | - Claude Piguet
- Department of Inorganic and Analytical Chemistry, and of Physical Chemistry , University of Geneva , 30 quai E. Ansermet , CH-1211 Geneva 4, Switzerland
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32
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Doroshenko I, Buchholz A, Domincova Bergerova E, Plass W, Pinkas J. Heterometallic 3d–4f {Co 2Gd 4} phosphonates: new members of the potential magnetic cooler family. NEW J CHEM 2020. [DOI: 10.1039/c9nj05071j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three new 3d–4f heterometallic phosphonate complexes with the formula [Na2CoIII2Gd4(L)6(bpy)2(OR)2]·nSolv (L = SAA3−(1), BSAA3−(2), and NAA3−(3); bpy = 2,2′-bipyridine; OR = OH and OMe; Solv = H2O and MeOH) were isolated and studied in detail.
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Affiliation(s)
- Iaroslav Doroshenko
- Department of Chemistry
- Masaryk University
- CZ-61137 Brno
- Czech Republic
- CEITEC MU
| | - Axel Buchholz
- Institut für Anorganische und Analytische Chemie
- Friedrich-Schiller-Universität Jena
- 07743 Jena
- Germany
| | | | - Winfried Plass
- Institut für Anorganische und Analytische Chemie
- Friedrich-Schiller-Universität Jena
- 07743 Jena
- Germany
| | - Jiri Pinkas
- Department of Chemistry
- Masaryk University
- CZ-61137 Brno
- Czech Republic
- CEITEC MU
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33
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Peng G, Chen Y, Li B. One-dimensional lanthanide coordination polymers supported by pentadentate Schiff-base and diphenyl phosphate ligands: single molecule magnet behavior and photoluminescence. NEW J CHEM 2020. [DOI: 10.1039/d0nj00533a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Four one-dimensional lanthanide coordination polymers constructed from Ln2 dimers showing single molecule magnet behavior and photoluminescence are reported.
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Affiliation(s)
- Guo Peng
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- P. R. China
| | - Yue Chen
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- P. R. China
| | - Bo Li
- College of Chemistry and Pharmaceutical Engineering
- Nanyang Normal University
- Nanyang 473061
- P. R. China
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34
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Oña OB, Alcoba DR, Massaccesi GE, Torre A, Lain L, Melo JI, Oliva-Enrich JM, Peralta JE. Magnetic properties of closo-carborane-based Co(II) single-ion complexes with O, S, Se, and Te bridging atoms. Polyhedron 2020. [DOI: 10.1016/j.poly.2019.114257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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35
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Roy S, Sparkes HA, Mohanta S. Syntheses, Crystal Structures, and Magnetic Properties of a Series of Defect‐Dicubane Tetranickel(II) Systems with Variable, Mixed, and Interchangeable µ
3
‐Core Ligands. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shuvayan Roy
- Department of Chemistry Inorganic Chemistry Section University of Calcutta 92 A. P. C Road Kolkata 700 009 India
| | - Hazel A. Sparkes
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
| | - Sasankasekhar Mohanta
- Department of Chemistry Inorganic Chemistry Section University of Calcutta 92 A. P. C Road Kolkata 700 009 India
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36
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Ma D, Peng G, Zhang YY, Li B. Field-induced slow magnetic relaxation in two-dimensional and three-dimensional Co(ii) coordination polymers. Dalton Trans 2019; 48:15529-15536. [PMID: 31314024 DOI: 10.1039/c9dt02070e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two coordination polymers formulated as [Co(1,4-bimb)0.5(5-aip)(H2O)]n (1) and [Co(1,4-bib)1.5(5-hip)(H2O)]n (2) (1,4-bimb = 1,4-bis(imidazol-1-ylmethyl)benzene, 5-aip = 5-aminoisophthalic acid, 1,4-bib = 1,4-bis(1-imidazolyl)benzene and 5-hip = 5-hydroxyisophthalic acid) have been prepared and structurally characterized. Complex 1 is a two-dimensional (2D) network where Co(ii) is six coordinate in a CoO4N2 coordination environment, while the structure of 2 consists of a three-dimensional (3D) framework built from mononuclear Co(ii) units with distorted octahedral geometry as nodes. Static magnetic studies show that first-order orbital angular momentum may play an important role in the magnetic properties of 1, whereas strong easy-axis anisotropy (D = -102 cm-1) was observed in 2. Alternating current (ac) susceptibility measurements demonstrate that both the complexes display field-induced single ion magnet (SIM) behavior.
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Affiliation(s)
- Deyun Ma
- School of Food and Pharmaceutical Engineering, Zhaoqing University, Zhaoqing 526061, P. R. China
| | - Guo Peng
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, P. R. China. and Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China.
| | - Ying-Ying Zhang
- Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China.
| | - Bo Li
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, P. R. China.
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37
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Langley SK, Vignesh KR, Gupta T, Gartshore CJ, Rajaraman G, Forsyth CM, Murray KS. New examples of triangular terbium(iii) and holmium(iii) and hexagonal dysprosium(iii) single molecule toroics. Dalton Trans 2019; 48:15657-15667. [PMID: 31482898 DOI: 10.1039/c9dt02419k] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The structural, magnetic and theoretical aspects are described for three triangular lanthanide complexes, [Tb(OH)(teaH2)3(paa)3]Cl2 (1), [Dy(OH)(teaH2)3(paa)3]Cl2 (2) and [Ho(OH)(teaH2)3(paa)3]Cl2 (3), and a hexanuclear wheel of formula [Dy(pdeaH)6(NO3)6] (4) [teaH3 = triethanolamine, paaH = N-(2-pyridyl)-acetoacetamide and pdeaH3 = 3-[bis(2-hydroxyethyl)amino]propan-1-ol]. Each complex displays single molecule toroidal behaviour as rationalised using high-level ab initio calculations. Complexes 2 and 3 are the first examples of mixed moment single molecule toroidal complexes featuring non-Kramers ions.
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Affiliation(s)
- Stuart K Langley
- School of science and the environment, Division of Chemistry, Manchester Metropolitan University, Manchester, M15 6BH, UK.
| | - Kuduva R Vignesh
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai-400076, India.
| | - Tulika Gupta
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai-400076, India.
| | | | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai-400076, India.
| | - Craig M Forsyth
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia.
| | - Keith S Murray
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia.
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38
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Mandal S, Majumder S, Mohanta S. Syntheses, Crystal Structures and Experimental/Theoretical Magnetic Properties of Two Butterfly Ni
II
2
Y
III
2
Compounds. ChemistrySelect 2019. [DOI: 10.1002/slct.201902302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Shuvankar Mandal
- Department of ChemistryInorganic Chemistry SectionUniversity of Calcutta 92 A. P. C Road Kolkata 700 009 India
| | - Samit Majumder
- Department of ChemistryBhairab Ganguly College,2 Feeder Road,Belghoria, Kolkata West Bengal 700056 India
| | - Sasankasekhar Mohanta
- Department of ChemistryInorganic Chemistry SectionUniversity of Calcutta 92 A. P. C Road Kolkata 700 009 India
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39
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Roy S, Hari N, Mohanta S. Synthesis, Crystal Structures, Magnetic Properties, and Fluorescence of Two Heptanuclear Co
III
4
Ln
III
3
Compounds (Ln = Gd
III
, Dy
III
): Multiple Relaxation Dynamics in the Dy
III
Analogue. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900383] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Shuvayan Roy
- Department of Chemistry Inorganic Chemistry Section University of Calcutta 92 A. P. C Road 700 009 Kolkata India
| | - Nairita Hari
- Department of Chemistry Inorganic Chemistry Section University of Calcutta 92 A. P. C Road 700 009 Kolkata India
| | - Sasankasekhar Mohanta
- Department of Chemistry Inorganic Chemistry Section University of Calcutta 92 A. P. C Road 700 009 Kolkata India
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40
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Synthesis, crystal structure and spectroscopic properties of a new type of pentanuclear zinc(II) complex. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.03.031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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41
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Langley SK, Vignesh KR, Moubaraki B, Rajaraman G, Murray KS. Oblate versus Prolate Electron Density of Lanthanide Ions: A Design Criterion for Engineering Toroidal Moments? A Case Study on {LnIII6} (Ln=Tb, Dy, Ho and Er) Wheels. Chemistry 2019; 25:4156-4165. [DOI: 10.1002/chem.201805765] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 01/30/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Stuart K. Langley
- School of Science and the Environment, Division of chemistryManchester Metropolitan University Manchester UK
| | | | | | - Gopalan Rajaraman
- Department of ChemistryIndian Institute of Technology Bombay, Powai Mumbai Maharashtra 400 076 India
| | - Keith S. Murray
- School of ChemistryMonash University Clayton Victoria 3800 Australia
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42
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Eom S, Park S, Song JH, Lee WR, Lee HG, Kang DW, Joung JF, Park S, Moon D, Hong CS. Synthesis, Structure, and Photoluminescence Properties of a Metal-Organic Framework with Hexagonal Channels: Selective Turn-On Sensing for Mg2+
Ion. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201801291] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Sunhwi Eom
- Department of Chemistry; Korea University; 02841 Seoul Republic of Korea
| | - Sora Park
- Department of Chemistry; Korea University; 02841 Seoul Republic of Korea
| | - Jeong Hwa Song
- Department of Chemistry; Korea University; 02841 Seoul Republic of Korea
| | - Woo Ram Lee
- Department of Chemistry; Sejong University; 05006 Seoul Republic of Korea
| | - Han Geul Lee
- Department of Chemistry; Korea University; 02841 Seoul Republic of Korea
| | - Dong Won Kang
- Department of Chemistry; Korea University; 02841 Seoul Republic of Korea
| | | | - Sungnam Park
- Department of Chemistry; Korea University; 02841 Seoul Republic of Korea
| | - Dohyun Moon
- Beamline Division; Pohang Accelerator Laboratory; 790-784 Pohang, Kyungbuk Republic of Korea
| | - Chang Seop Hong
- Department of Chemistry; Korea University; 02841 Seoul Republic of Korea
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43
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Ji XQ, Ma F, Xiong J, Yang J, Sun HL, Zhang YQ, Gao S. A rare chloride-bridged dysprosium chain with slow magnetic relaxation: a thermally activated mechanism via a second-excited state promoted by magnetic interactions. Inorg Chem Front 2019. [DOI: 10.1039/c8qi01331d] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Magnetic interactions induced by chloride bridges promote the slow magnetic relaxation in a dysprosium chain to pass through the second-excited state.
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Affiliation(s)
- Xiao-Qin Ji
- Department of Chemistry and Beijing Key Laboratory of Energy Conversion and Storage Materials
- Beijing Normal University
- Beijing 100875
- P. R. China
| | - Fang Ma
- Department of Chemistry and Beijing Key Laboratory of Energy Conversion and Storage Materials
- Beijing Normal University
- Beijing 100875
- P. R. China
| | - Jin Xiong
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Rare Earth Materials Chemistry and Applications
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Jing Yang
- Department of Chemistry and Beijing Key Laboratory of Energy Conversion and Storage Materials
- Beijing Normal University
- Beijing 100875
- P. R. China
| | - Hao-Ling Sun
- Department of Chemistry and Beijing Key Laboratory of Energy Conversion and Storage Materials
- Beijing Normal University
- Beijing 100875
- P. R. China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS
- School of Physical Science and Technology
- Nanjing Normal University
- Nanjing 210023
- P. R. China
| | - Song Gao
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Rare Earth Materials Chemistry and Applications
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
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44
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Janicki R, Mondry A. Structural and thermodynamic aspects of water–carbonate exchange equilibrium for MIII/IV–EDTA–carbonate systems. Inorg Chem Front 2019. [DOI: 10.1039/c8qi01062e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The carbonate anion readily displaces water molecules in the [Er(EDTA)(H2O)2]− complex and though it is mainly an entropy driven process, the formation of the [Er(EDTA)(CO3)]3– complex is additionally enthalpy stabilized.
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Affiliation(s)
- Rafał Janicki
- University of Wrocław
- Faculty of Chemistry
- 50-383 Wrocław
- Poland
| | - Anna Mondry
- University of Wrocław
- Faculty of Chemistry
- 50-383 Wrocław
- Poland
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45
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Braun F, Comba P, Grimm L, Herten DP, Pokrandt B, Wadepohl H. Ligand-sensitized lanthanide(III) luminescence with octadentate bispidines. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.09.078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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46
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Biswas S, Mandal L, Shen Y, Yamashita M. Exploration of SMM behavior of Ln2 complexes derived from thianaphthene-2-carboxylic acid. Dalton Trans 2019; 48:14096-14102. [DOI: 10.1039/c9dt01984g] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Observations were made of field-induced SMM property of a dysprosium-based dinuclear complex derived from thianaphthene-2-carboxylic acid ligand.
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Affiliation(s)
- Soumava Biswas
- WPI Research Center
- Advanced Institute for Materials Research
- Tohoku University
- Sendai 980-8577
- Japan
| | - Leena Mandal
- Department of Chemistry
- Graduate School of Science
- Tohoku University
- Sendai 980-8578
- Japan
| | - Yongbing Shen
- Department of Chemistry
- Graduate School of Science
- Tohoku University
- Sendai 980-8578
- Japan
| | - Masahiro Yamashita
- WPI Research Center
- Advanced Institute for Materials Research
- Tohoku University
- Sendai 980-8577
- Japan
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47
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Cheng LW, Zhang CL, Wei JY, Lin PH. Mononuclear and trinuclear DyIII SMMs with Schiff-base ligands modified by nitro-groups: first triangular complex with a N–N pathway. Dalton Trans 2019; 48:17331-17339. [DOI: 10.1039/c9dt02646k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three DyIII SMMs were obtained with Schiff-base ligands containing nitro-groups. The triangular complex supported by the cis–trans form of the hnc3− ligand displayed the first air-stable triangular complex with a N–N pathway.
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Affiliation(s)
- Li-Wei Cheng
- Department of Chemistry
- National Chung Hsing University
- Taichung 402
- Republic of China
| | - Chi-Lung Zhang
- Department of Chemistry
- National Chung Hsing University
- Taichung 402
- Republic of China
| | - Jun-Yu Wei
- Department of Chemistry
- National Chung Hsing University
- Taichung 402
- Republic of China
| | - Po-Heng Lin
- Department of Chemistry
- National Chung Hsing University
- Taichung 402
- Republic of China
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48
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Roy S, Ghosh S, Martins DOTA, Tuna F, Mohanta S. Synthesis, Crystal Structures, and Magnetic Properties of New Hexanuclear Mn
III
2
Ln
III
4
Complexes: SMM Behavior of the Terbium(III) Analogue. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800792] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Shuvayan Roy
- Department of Chemistry Inorganic Chemistry Section University of Calcutta 92 A. P. C Road 700009 Kolkata India
| | - Sagar Ghosh
- Department of Chemistry Inorganic Chemistry Section University of Calcutta 92 A. P. C Road 700009 Kolkata India
| | - Daniel O. T. A. Martins
- National EPR Facility Photon Science Institute University of Manchester Oxford Road M13 9PL Manchester United Kingdom
| | - Floriana Tuna
- National EPR Facility Photon Science Institute University of Manchester Oxford Road M13 9PL Manchester United Kingdom
| | - Sasankasekhar Mohanta
- Department of Chemistry Inorganic Chemistry Section University of Calcutta 92 A. P. C Road 700009 Kolkata India
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49
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Carreras A, Bernuz E, Marugan X, Llunell M, Alemany P. Effects of Temperature on the Shape and Symmetry of Molecules and Solids. Chemistry 2018; 25:673-691. [DOI: 10.1002/chem.201801682] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 07/17/2018] [Indexed: 01/22/2023]
Affiliation(s)
- Abel Carreras
- Donostia International Physics Center (DIPC) Paseo Manuel de Lardizabal 4 20018 Donostia, Euskadi Spain
| | - Efrem Bernuz
- Departament de Ciència dels Materials i Química Física andInstitut de Química Teòrica i Computacional (IQTCUB)Universitat de Barcelona Diagonal 647 08028 Barcelona, Catalunya Spain
| | - Xavier Marugan
- Departament de Ciència dels Materials i Química Física andInstitut de Química Teòrica i Computacional (IQTCUB)Universitat de Barcelona Diagonal 647 08028 Barcelona, Catalunya Spain
| | - Miquel Llunell
- Departament de Ciència dels Materials i Química Física andInstitut de Química Teòrica i Computacional (IQTCUB)Universitat de Barcelona Diagonal 647 08028 Barcelona, Catalunya Spain
| | - Pere Alemany
- Departament de Ciència dels Materials i Química Física andInstitut de Química Teòrica i Computacional (IQTCUB)Universitat de Barcelona Diagonal 647 08028 Barcelona, Catalunya Spain
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50
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Mandal S, Hari N, Mondal S, Mohanta S. Dinuclear, dimer-of-dinuclear and new type of polymeric metal complexes of copper(II)–zinc(II)/cadmium(II) derived from a less explored compartmental ligand. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.08.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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