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Seredyuk ML, Znovjyak KO, Fritsky IO. Influence of Cooperative Interactions on the Spin Crossover Phenomenon in Iron(II) Complexes: A Review. THEOR EXP CHEM+ 2022; 58:75-89. [DOI: 10.1007/s11237-022-09725-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Kulmaczewski R, Kershaw Cook LJ, Pask CM, Cespedes O, Halcrow MA. Iron(II) Complexes of 4-(Alkyldisulfanyl)-2,6-di(pyrazolyl)pyridine Derivatives. Correlation of Spin-Crossover Cooperativity with Molecular Structure Following Single-Crystal-to-Single-Crystal Desolvation. Cryst Growth Des 2022; 22:1960-1971. [PMID: 35431660 PMCID: PMC9007408 DOI: 10.1021/acs.cgd.2c00005] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 01/24/2022] [Indexed: 06/14/2023]
Abstract
The complex salts [Fe(L 1)2]X2 (1X 2 ; L 1 = 4-(isopropyldisulfanyl)-2,6-bis(pyrazolyl)pyridine; X- = BF4 -, ClO4 -) form solvated crystals from common organic solvents. Crystals of 1X 2 ·Me2CO show abrupt spin transitions near 160 K, with up to 22 K thermal hysteresis. 1X 2 ·Me2CO cocrystallizes with other, less cooperative acetone solvates, which all transform into the same solvent-free materials 1X 2 ·sf upon exposure to air, or mild heating. Conversion of 1X 2 ·Me2CO to 1X 2 ·sf proceeds in a single-crystal to single-crystal fashion. 1X 2 ·sf are not isomorphous with the acetone solvates, and exhibit abrupt spin transitions at low temperature with hysteresis loops of 30-38 K (X- = BF4 -) and 10-20 K (X- = ClO4 -), depending on the measurement method. Interestingly, the desolvation has an opposite effect on the SCO temperature and hysteresis in the two salts. The hysteretic spin transitions in 1X 2 ·Me2CO and 1X 2 ·sf do not involve a crystallographic phase change but are accompanied by a significant rearrangement of the metal coordination sphere. Other solvates 1X 2 ·MeNO2, 1X 2 ·MeCN, and 1X 2 ·H2O are mostly isomorphous with each other and show more gradual spin-crossover equilibria near room temperature. All three of these lattice types have similar unit cell dimensions and contain cations associated into chains through pairwise, intermolecular S···π interactions. Polycrystalline [Fe(L 2)2][BF4]2·MeNO2 (2[BF 4 ] 2 ·MeNO2; L 2 = 4-(methyldisulfanyl)-2,6-bis(pyrazolyl)pyridine) shows an abrupt spin transition just above room temperature, with an unsymmetrical and structured hysteresis loop, whose main features are reversible upon repeated thermal scanning.
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Affiliation(s)
- Rafal Kulmaczewski
- School
of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K.
| | | | - Christopher M. Pask
- School
of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K.
| | - Oscar Cespedes
- School
of Physics and Astronomy, University of
Leeds, E. C. Stoner
Building, Leeds LS2 9JT, U.K.
| | - Malcolm A. Halcrow
- School
of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K.
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Bhar K, Guo W, Gonidec M, Nikhil Raj M V, Bhatt S, Perdih F, Guionneau P, Chastanet G, Sharma AK. High temperature spin crossover behaviour of mononuclear bis-(thiocyanato)iron( ii) complexes with judiciously designed bidentate N-donor Schiff bases with varying substituents. Dalton Trans 2022; 51:9302-9313. [DOI: 10.1039/d2dt00416j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present herein the solvent and substituent dependent diverse spin crossover behaviours of molecular bis-(thiocyanato)iron(ii) complexes with smartly designed bidentate Schiff bases above room temperature.
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Affiliation(s)
- Kishalay Bhar
- Department of Chemistry, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, NH-8, Bandarsindri, Ajmer Distt., Rajasthan-305817, India
| | - Wenbin Guo
- Univ. Bordeaux, CNRS, Bordeaux INP, ICMCB, UMR 5026, 87 avenue du Dr A. Schweitzer, F-33600 Pessac, France
| | - Mathieu Gonidec
- Univ. Bordeaux, CNRS, Bordeaux INP, ICMCB, UMR 5026, 87 avenue du Dr A. Schweitzer, F-33600 Pessac, France
| | - Venkata Nikhil Raj M
- Department of Chemistry, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, NH-8, Bandarsindri, Ajmer Distt., Rajasthan-305817, India
| | - Surabhi Bhatt
- Department of Chemistry, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, NH-8, Bandarsindri, Ajmer Distt., Rajasthan-305817, India
| | - Franc Perdih
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Vecna pot 113, PO Box 537, SI-1000 Ljubljana, Slovenia
| | - Philippe Guionneau
- Univ. Bordeaux, CNRS, Bordeaux INP, ICMCB, UMR 5026, 87 avenue du Dr A. Schweitzer, F-33600 Pessac, France
| | - Guillaume Chastanet
- Univ. Bordeaux, CNRS, Bordeaux INP, ICMCB, UMR 5026, 87 avenue du Dr A. Schweitzer, F-33600 Pessac, France
| | - Anuj K. Sharma
- Department of Chemistry, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, NH-8, Bandarsindri, Ajmer Distt., Rajasthan-305817, India
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Hu C, Huang QQ, Xu HB, Zhang Y, Peng X, Zeng MH. Concomitant polymorphs: an alternative to modulate the oxygen evolution performance of mononuclear nickel complexes. Inorg Chem Front 2021. [DOI: 10.1039/d1qi00079a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Studying two stable reversible transformations of concomitant polymorphs of NiL2 as heterogeneous catalysts, coplanar NiL2-R exhibits better OER activities than zigzag NiL2-G, dependent on different disparities in crystal packing.
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Affiliation(s)
- Chen Hu
- Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry
- College of Chemistry and Chemical Engineering
- Hubei University
- Wuhan 430062
| | - Qing-qing Huang
- Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry
- College of Chemistry and Chemical Engineering
- Hubei University
- Wuhan 430062
| | - Hai-Bing Xu
- Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry
- College of Chemistry and Chemical Engineering
- Hubei University
- Wuhan 430062
| | - Yuexing Zhang
- Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry
- College of Chemistry and Chemical Engineering
- Hubei University
- Wuhan 430062
| | - Xu Peng
- Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry
- College of Chemistry and Chemical Engineering
- Hubei University
- Wuhan 430062
| | - Ming-Hua Zeng
- Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry
- College of Chemistry and Chemical Engineering
- Hubei University
- Wuhan 430062
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Reeves MG, Tailleur E, Wood PA, Marchivie M, Chastanet G, Guionneau P, Parsons S. Mapping the cooperativity pathways in spin crossover complexes. Chem Sci 2020; 12:1007-1015. [PMID: 34163867 PMCID: PMC8179037 DOI: 10.1039/d0sc05819j] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Crystal packing energy calculations are applied to the [Fe(PM-L)2(NCS)2] family of spin crossover (SCO) complexes (PM-L = 4-substituted derivatives of the N-(2-pyridylmethylene)-4-aminobiphenyl ligand) with the aim of relating quantitatively the cooperativity of observed SCO transitions to intermolecular interactions in the crystal structures. This approach reveals a linear variation of the transition abruptness with the sum of the magnitudes of the interaction energy changes within the first molecular coordination sphere in the crystal structure. Abrupt transitions are associated with the presence of significant stabilising and destabilising changes in intermolecular interaction energies. While the numerical trend established for the PM-L family does not directly extend to other classes of SCO complex in which the intermolecular interactions may be very different, a plot of transition abruptness against the range of interaction energy changes normalised by the largest change shows a clustering of complexes with similar transition abruptness. The changes in intermolecular interactions are conveniently visualised using energy difference frameworks, which illustrate the cooperativity pathways of an SCO transition. The abruptness of spin crossover (SCO) is related to intermolecular energy changes occurring over the course of an SCO transition. Crossover is abrupt when SCO-induced strain is accommodated synergistically in a few key interactions.![]()
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Affiliation(s)
- Matthew G Reeves
- Centre for Science at Extreme Conditions, EaStCHEM School of Chemistry, The University of Edinburgh King's Buildings, West Mains Road Edinburgh Scotland EH9 3FJ UK
| | - Elodie Tailleur
- CNRS, Univ. Bordeaux, Bordeaux INP, ICMCB, UMR 5026 87 av. Dr A. Schweitzer F-33600 Pessac France
| | - Peter A Wood
- Cambridge Crystallographic Data Centre 12 Union Road Cambridge England CB2 1EZ UK
| | - Mathieu Marchivie
- CNRS, Univ. Bordeaux, Bordeaux INP, ICMCB, UMR 5026 87 av. Dr A. Schweitzer F-33600 Pessac France
| | - Guillaume Chastanet
- CNRS, Univ. Bordeaux, Bordeaux INP, ICMCB, UMR 5026 87 av. Dr A. Schweitzer F-33600 Pessac France
| | - Philippe Guionneau
- CNRS, Univ. Bordeaux, Bordeaux INP, ICMCB, UMR 5026 87 av. Dr A. Schweitzer F-33600 Pessac France
| | - Simon Parsons
- Centre for Science at Extreme Conditions, EaStCHEM School of Chemistry, The University of Edinburgh King's Buildings, West Mains Road Edinburgh Scotland EH9 3FJ UK
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Vela S, Fumanal M, Cirera J, Ribas-Arino J. Thermal spin crossover in Fe(ii) and Fe(iii). Accurate spin state energetics at the solid state. Phys Chem Chem Phys 2020; 22:4938-4945. [DOI: 10.1039/d0cp00162g] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Parametrization of PBE+U under the D3 and D3-BJ dispersion corrections to study FeII and FeIII-based Spin Crossover complexes.
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Affiliation(s)
- Sergi Vela
- Laboratory for Computational Molecular Design
- Institute of Chemical Sciences and Engineering
- EPFL
- CH-1015 Lausanne
- Switzerland
| | - Maria Fumanal
- Laboratoire de Chimie Quantique
- UMR 7111
- CNRS-Université de Strasbourg
- F-67000 Strasbourg
- France
| | - Jordi Cirera
- Departament de Química Inorganica i Orgànica and IQTCUB
- Universitat de Barcelona
- Barcelona
- Spain
| | - Jordi Ribas-Arino
- Departament de Ciència de Materials i Química Física and IQTCUB
- Universitat de Barcelona
- Barcelona
- Spain
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