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Wu ML, Chen YC, Ruan ZY, Ni ZP, Wu SG, Tong ML. Two-dimensional spin-crossover coordination polymers based on the 1,1,2,2-tetra(pyridin-4-yl)ethene ligand. Dalton Trans 2024; 53:7470-7476. [PMID: 38595157 DOI: 10.1039/d4dt00204k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
A series of two-dimensional (2D) spin-crossover coordination polymers (SCO-CPs) [FeII(TPE)(NCX)2]·solv (1: X = BH3, solv = H2O·2CH3OH·DMF; 2: X = Se, solv = H2O·2CH3OH·0.5DMF; 3: X = S, solv = H2O·2CH3OH·0.5DMF) were synthesized by employing 1,1,2,2-tetra(pyridin-4-yl)ethene (TPE) and pseudohalide (NCX-) coligands. Magnetic measurements indicated that complexes 1-3 exhibited SCO behaviors with diminishing thermal hysteresis (7/4/0 K) upon decreasing the ligand-field strength. The critical temperatures (Tc) during spin transition were found to be inversely proportional to the coordination ability parameters (a™) with a linear correlation. The guest effect was also investigated in the solvent-exchanged phases 1-SE/2-SE/3-SE wherein the DMF molecules were replaced by methanol molecules. Compared with 1-3, 1-SE/2-SE/3-SE displayed more abrupt and complete single-step SCO behaviors but narrower thermal hysteretic loops. The results reported here demonstrate that the Tc values of these two families were dominated by the ligand-field strength of the NCX- anions (NCBH3 > NCSe > NCS), whereas the guest effect only modulated the kinetic factor of the SCO nature in this system.
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Affiliation(s)
- Meng-Ling Wu
- Key Laboratory of Bioinorganic and Synthetic Chemistry, Ministry of Education, School of Chemistry, IGCME, GBRCE for Functional Molecular Engineering, Sun Yat-Sen University, Guangzhou 510275, P. R. China.
| | - Yan-Cong Chen
- Key Laboratory of Bioinorganic and Synthetic Chemistry, Ministry of Education, School of Chemistry, IGCME, GBRCE for Functional Molecular Engineering, Sun Yat-Sen University, Guangzhou 510275, P. R. China.
| | - Ze-Yu Ruan
- Key Laboratory of Bioinorganic and Synthetic Chemistry, Ministry of Education, School of Chemistry, IGCME, GBRCE for Functional Molecular Engineering, Sun Yat-Sen University, Guangzhou 510275, P. R. China.
| | - Zhao-Ping Ni
- Key Laboratory of Bioinorganic and Synthetic Chemistry, Ministry of Education, School of Chemistry, IGCME, GBRCE for Functional Molecular Engineering, Sun Yat-Sen University, Guangzhou 510275, P. R. China.
| | - Si-Guo Wu
- Key Laboratory of Bioinorganic and Synthetic Chemistry, Ministry of Education, School of Chemistry, IGCME, GBRCE for Functional Molecular Engineering, Sun Yat-Sen University, Guangzhou 510275, P. R. China.
| | - Ming-Liang Tong
- Key Laboratory of Bioinorganic and Synthetic Chemistry, Ministry of Education, School of Chemistry, IGCME, GBRCE for Functional Molecular Engineering, Sun Yat-Sen University, Guangzhou 510275, P. R. China.
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Wang JW, Chen C, Li YJ, Luo YH, Sun BW. N-donor ligands-directed coordination of Zn- azido complexes. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.09.064] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Bartual-Murgui C, Piñeiro-López L, Valverde-Muñoz FJ, Muñoz MC, Seredyuk M, Real JA. Chiral and Racemic Spin Crossover Polymorphs in a Family of Mononuclear Iron(II) Compounds. Inorg Chem 2017; 56:13535-13546. [PMID: 29048915 DOI: 10.1021/acs.inorgchem.7b02272] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Understanding the origin of cooperativity and the equilibrium temperature of transition (T1/2) displayed by the spin-crossover (SCO) compounds as well as controlling these parameters are of paramount importance for future applications. For this task, the occurrence of polymorphism, presented by a number of SCO complexes, may provide deep insight into the influence of the supramolecular organization on the SCO behavior. In this context, herein we present a novel family of mononuclear octahedral FeII complexes with formula cis-[Fe(bqen)(NCX)2], where bqen is the chelating tetradentate ligand N,N'-bis(8-quinolyl)ethane-1,2-diamine and X = S, Se. Depending on the preparation method, these compounds crystallize in either the orthorhombic or the trigonal symmetry systems. While the orthorhombic phase is composed of a racemic mixture of mononuclear complexes (polymorph I), the trigonal phase contains only one of the two possible enantiomers (Λ or Δ), thereby generating a chiral crystal (polymorph II). The four derivatives undergo SCO behavior with well-differentiated T1/2 values occurring in the interval 90-233 K. On one hand, T1/2 is about 110 K (polymorph I) and 87 K (polymorph II) higher for the selenocyanate derivatives in comparison to those for their thiocyanate counterparts. These differences in T1/2 are ascribed not only to the higher ligand field induced by the selenocyanate anion but also to a remarkable difference in the structural reorganization of the [FeN6] coordination core upon SCO. Likewise, the higher cooperativity observed for the thiocyanate derivatives seems to be related to their stronger intermolecular interactions within the crystal. On the other hand, T1/2 is about 53 K (thiocyanate) and 29 K (selenocyanate) higher for the trigonal polymorph II in comparison to those for the orthorhombic polymorph I. These differences, and the small changes observed in cooperativity, stem from the slightly different hetero- and homochiral crystal packing generated by the cis-[Fe(bqen)(NCX)2] molecules, which determines subtle adaptations in the intermolecular contacts and the FeII coordination core.
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Affiliation(s)
- Carlos Bartual-Murgui
- Institut de Ciència Molecular (ICMol), Departament de Química Inorgànica, Universitat de València , C/Catedrático José Beltrán Martínez, 2, 46980 Paterna (Valencia), Spain
| | - Lucía Piñeiro-López
- Institut de Ciència Molecular (ICMol), Departament de Química Inorgànica, Universitat de València , C/Catedrático José Beltrán Martínez, 2, 46980 Paterna (Valencia), Spain
| | - F Javier Valverde-Muñoz
- Institut de Ciència Molecular (ICMol), Departament de Química Inorgànica, Universitat de València , C/Catedrático José Beltrán Martínez, 2, 46980 Paterna (Valencia), Spain
| | - M Carmen Muñoz
- Departamento de Física Aplicada, Universitat Politècnica de València , Camino de Vera s/n, 46022 Valencia, Spain
| | - Maksym Seredyuk
- Institut de Ciència Molecular (ICMol), Departament de Química Inorgànica, Universitat de València , C/Catedrático José Beltrán Martínez, 2, 46980 Paterna (Valencia), Spain.,Taras Shevchenko National University , Department of Chemistry, Volodymyrska Str. 64, Kyiv 01601, Ukraine
| | - José Antonio Real
- Institut de Ciència Molecular (ICMol), Departament de Química Inorgànica, Universitat de València , C/Catedrático José Beltrán Martínez, 2, 46980 Paterna (Valencia), Spain
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Bushuev MB, Vinogradova KA, Gatilov YV, Korolkov IV, Nikolaenkova EB, Krivopalov VP. Spin crossover in iron(II) hexafluorophosphate complexes with 2-(pyridin-2-yl)-4-(3,5-di-R-1H-pyrazol-1-yl)-6-methylpyrimidines. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2017.08.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Assembly of 6-aminonicotinic acid and inorganic anions into different dimensionalities: Crystal structure, absorption properties and Hirshfeld surface analysis. Polyhedron 2017. [DOI: 10.1016/j.poly.2016.12.045] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Luo YH, Wen GJ, Gu LS, Wang MN, Sun BW. Study of spin crossover in an iron(II) tris(diimine) system tuned by counter anions. Polyhedron 2017. [DOI: 10.1016/j.poly.2016.09.059] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Co-crystallization of a benzimidazole derivative with carboxylic acids. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2666-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Luo YH, Sun Y, Liu QL, Yang LJ, Wen GJ, Wang MX, Sun BW. Influence of Halogen Atoms on Spin-Crossover Properties of 1,2,4-Triazole-Based 1D Iron(II) Polymers. ChemistrySelect 2016. [DOI: 10.1002/slct.201600644] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Yang-Hui Luo
- School of Chemistry and Chemical Engineering; Southeast University Nanjing; 211189 P.R. China
| | - Yu Sun
- School of Chemistry and Chemical Engineering; Southeast University Nanjing; 211189 P.R. China
- School of Pharmacy; Wannan Medical College Wuhu; 241002 P.R. China
| | - Qing-ling Liu
- School of Chemistry and Chemical Engineering; Southeast University Nanjing; 211189 P.R. China
| | - Li-Jing Yang
- School of Chemistry and Chemical Engineering; Southeast University Nanjing; 211189 P.R. China
| | - Gao-Ju Wen
- School of Chemistry and Chemical Engineering; Southeast University Nanjing; 211189 P.R. China
| | - Ming-Xin Wang
- School of Chemistry and Chemical Engineering; Southeast University Nanjing; 211189 P.R. China
| | - Bai-Wang Sun
- School of Chemistry and Chemical Engineering; Southeast University Nanjing; 211189 P.R. China
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Luo YH, Nihei M, Wen GJ, Sun BW, Oshio H. Ambient-Temperature Spin-State Switching Achieved by Protonation of the Amino Group in [Fe(H2Bpz2)2(bipy-NH2)]. Inorg Chem 2016; 55:8147-52. [DOI: 10.1021/acs.inorgchem.6b01193] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yang-Hui. Luo
- School
of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, People’s Republic of China
| | - Masayuki Nihei
- Faculty
of Pure and Applied Science, University of Tsukuba, Tennodai
1-1-1, Tsukuba 305-8571, Japan
| | - Gao-Ju Wen
- School
of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, People’s Republic of China
| | - Bai-Wang Sun
- School
of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, People’s Republic of China
| | - Hiroki Oshio
- Faculty
of Pure and Applied Science, University of Tsukuba, Tennodai
1-1-1, Tsukuba 305-8571, Japan
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