1
|
Ahmed M, Arachchige KSA, Xie Z, Price JR, Cruddas J, Clegg JK, Powell BJ, Kepert CJ, Neville SM. Guest-Induced Multistep to Single-Step Spin-Crossover Switching in a 2-D Hofmann-Like Framework with an Amide-Appended Ligand. Inorg Chem 2022; 61:11667-11674. [PMID: 35862437 DOI: 10.1021/acs.inorgchem.2c01253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A detailed study of the two-dimensional (2-D) Hofmann-like framework [Fe(furpy)2Pd(CN)4]·nG (furpy: N-(pyridin-4-yl)furan-2-carboxamide, G = H2O,EtOH (A·H2O,Et), and H2O (A·H2O)) is presented, including the structural and spin-crossover (SCO) implications of subtle guest modification. This 2-D framework is characterized by undulating Hofmann layers and an array of interlayer spacing environments─this is a strategic approach that we achieve by the inclusion of a ligand with multiple host-host and host-guest interaction sites. Variable-temperature magnetic susceptibility studies reveal an asymmetric multistep SCO for A·H2O,Et and an abrupt single-step SCO for A·H2O with an upshift in transition temperature of ∼75 K. Single-crystal analyses show a primitive orthorhombic symmetry for A·H2O,Et characterized by a unique FeII center─the multistep SCO character is attributed to local ligand orientation. Counterintuitively, A·H2O shows a triclinic symmetry with two inequivalent FeII centers that undergo a cooperative single-step high-spin (HS)-to-low-spin (LS) transition. We conduct detailed structure-function analyses to understand how the guest ethanol influences the delicate balance between framework communication and, therefore, the local structure and spin-state transition mechanism.
Collapse
Affiliation(s)
- Manan Ahmed
- School of Chemistry, The University of New South Wales, Sydney 2052, Australia
| | - Kasun S A Arachchige
- School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Zixi Xie
- The School of Chemistry, The University of Sydney, Camperdown, New South Wales 2006, Australia
| | - Jason R Price
- Australian Synchrotron, ANSTO Clayton, Victoria 3800, Australia
| | - Jace Cruddas
- School of Mathematics and Physics, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Jack K Clegg
- School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Benjamin J Powell
- School of Mathematics and Physics, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Cameron J Kepert
- The School of Chemistry, The University of Sydney, Camperdown, New South Wales 2006, Australia
| | - Suzanne M Neville
- School of Chemistry, The University of New South Wales, Sydney 2052, Australia
| |
Collapse
|
2
|
Group 10 metal-cyanide scaffolds in complexes and extended frameworks: Properties and applications. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214310] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
3
|
Terrero R, Avila Y, Mojica HR, Cano A, González M. M, Avila M, Reguera E. Thermally-induced spin-crossover in the Fe(3-Ethynylpyridine)2[M(CN)4] series with M = Ni, Pd, and Pt. Role of the electron density found at the CN 5σ orbital. NEW J CHEM 2022. [DOI: 10.1039/d2nj01214f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Abstract. This series of 2D coordination polymers shows thermally-induced spin-crossover where the temperature for the spin transition, according to the SQUID magnetic data, follows the order Ni < Pd <...
Collapse
|
4
|
Nößler M, Hunger D, Neuman NI, Reimann M, Reichert F, Winkler M, Klein J, Bens T, Suntrup L, Demeshko S, Stubbe J, Kaupp M, van Slageren J, Sarkar B. Fluorinated Click-Derived Tripodal Ligands Drive Spin Crossover in both Iron(II) and Cobalt(II) Complexes. Dalton Trans 2022; 51:10507-10517. [DOI: 10.1039/d2dt01005d] [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
Control of the spin state of metal complexes is important because it leads to a precise control over the physical properties and the chemical reactivity of the metal complexes. Currently,...
Collapse
|
5
|
Kitase K, Akahoshi D, Kitazawa T. Effects of Both Methyl and Pyrimidine Groups in Fe-Ag Spin-Crossover Hofmann-Type Complex {Fe(4-Methylpyrimidine) 2[Ag(CN) 2] 2}. Inorg Chem 2021; 60:4717-4722. [PMID: 33691406 DOI: 10.1021/acs.inorgchem.0c03655] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The spin-crossover (SCO) phenomenon is an active area of research. This paper describes the synthesis of an Fe-Ag Hofmann-type complex, {Fe(4-methylpyrimidine)2[Ag(CN)2]2}, which demonstrates a one-step SCO and single-layer Hofmann-type structure with Ag-N interactions and no Ag-Ag interactions, which is strikingly different from the previously synthesized complex {Fe(4-methylpyrimidine)2[Au(CN)2]2} that contains Au-Au interactions and no Au-N interactions. This difference can be explained in terms of the lack of relativistic effect in the Ag atoms and the different cooperative effects caused by their different structures. A scan-rate-dependent hysteresis is observed using magnetic measurement whereas not using 57Fe Mössbauer spectroscopy, suggesting that the spin transition is relatively slow.
Collapse
Affiliation(s)
- Kosuke Kitase
- Department of Chemistry, Toho University, Chiba 274-8510, Japan
| | | | - Takafumi Kitazawa
- Department of Chemistry, Toho University, Chiba 274-8510, Japan.,Research Centre for Materials with Integrated Properties, Toho University, Chiba 274-8510, Japan
| |
Collapse
|
6
|
Xie KP, Wu SG, Wang LF, Huang GZ, Ni ZP, Tong ML. A spin-crossover phenomenon in a 2D heterometallic coordination polymer with [Pd(SCN) 4] 2- building blocks. Dalton Trans 2021; 50:4152-4158. [PMID: 33688869 DOI: 10.1039/d1dt00244a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two new two-dimensional (2D) coordination polymers, [FeII(L)2{PdII(SCN)4}] (L1 = 3-(9-anthracenyl)-pyridine (1) and L2 = 4-(9-anthracenyl)-pyridine (2)), were constructed by employing square-planar [Pd(SCN)4]2- building blocks. Compound 1 exhibits a complete spin-crossover (SCO) behaviour under normal atmospheric pressure, and represents the first SCO example in a 2D system containing [Pd(SCN)4]2- units. In contrast, compound 2 only shows paramagnetic behaviour at measured temperatures. It is clear that the fine-tuning of the monodentate ligand can modulate the ligand field and packing fashions, which sheds light on developing new SCO materials.
Collapse
Affiliation(s)
- Kai-Ping Xie
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, P. R. China.
| | | | | | | | | | | |
Collapse
|
7
|
Chakraborty G, Park IH, Medishetty R, Vittal JJ. Two-Dimensional Metal-Organic Framework Materials: Synthesis, Structures, Properties and Applications. Chem Rev 2021; 121:3751-3891. [PMID: 33630582 DOI: 10.1021/acs.chemrev.0c01049] [Citation(s) in RCA: 266] [Impact Index Per Article: 88.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Gouri Chakraborty
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - In-Hyeok Park
- Graduate School of Analytical Science and Technology (GRAST), Chungnam National University, Daejeon 34134, South Korea
| | | | - Jagadese J. Vittal
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| |
Collapse
|
8
|
Li Y, Kong QR, Guo Y, Tang Z. Thermal hysteresis induced by external pressure in a 3D Hofmann-type SCO-MOF. Dalton Trans 2021; 50:1384-1389. [DOI: 10.1039/d0dt03796f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Two 3D Hofmann-type compounds [FeII(dbdpe)MII(CN)4]·4H2O have been synthesized. The application of pressure on compound 1 shifted the transition temperature from 185 K to 298 K and led to a hysteresis loop of 13–25 K.
Collapse
Affiliation(s)
- Yue Li
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen 361005
- People's Republic of China
| | - Qing-Rong Kong
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen 361005
- People's Republic of China
| | - Ying Guo
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen 361005
- People's Republic of China
| | - Zheng Tang
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Liangxiang Campus
- Beijing Institute of Technology
- Beijing 102488
| |
Collapse
|