title: An iron(II) incomplete spin-crossover compound: pressure effects and Mössbauer spectroscopy study.
abstract: A one-dimensional iron(II) spin-crossover compound [Fe(3py-im)(2)(NCS)(2)].7H(2)O (1) (3py-im = 2,4,5-tris(4-pyridly)-imidazole) has been solvothermally synthesized and structurally characterized. Compound 1 crystallizes in the monoclinic space group P2/c with a = 11.9078(2), b = 9.9474(1), c = 17.7290(3) and beta = 102.361(2) degrees at 105 K. Studies on the variable-temperature magnetic susceptibilities and Mössbauer spectra suggest that compound undergoes incomplete spin transition behaviour. Pressure effects on the transition behaviour have also been investigated, the thermal-induced spin transition becomes more gradual and the critical temperature shifts towards slightly higher temperature range when external pressure increases. However, the spin transition can not be completed by applying external pressure even as high as 0.79 GPa.
authors.affiliation: State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
authors.forename: Feng-Lei
authors.initials: FL
authors.lastname: Yang
authors.forename: Bao
authors.initials: B
authors.lastname: Li
authors.forename: Taro
authors.initials: T
authors.lastname: Hanajima
authors.forename: Yasuaki
authors.initials: Y
authors.lastname: Einaga
authors.forename: Rong-Bin
authors.initials: RB
authors.lastname: Huang
authors.forename: Lan-Sun
authors.initials: LS
authors.lastname: Zheng
authors.forename: Jun
authors.initials: J
authors.lastname: Tao
mesh_terms: D018360:Crystallography, X-Ray; D005296:Ferrous Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D008280:Magnetics; D008958:Models, Molecular; D015394:Molecular Structure; D011312:Pressure; D015204:Spectroscopy, Mossbauer; D013696:Temperature
chemical_list: D005296:Ferrous Compounds