Assembly Structures and Spin Crossover Properties of Facial and Meridional Isomers of Tris[benzyl(2-methylimidazol-4-ylmethylidene)amine]iron(II) Chloride Hexafluorophosphate

Furusho D; Nishi K; Hashibe T; Fujinami T; Hagiwara H; Matsumoto N; Halcrow MA; Iijima S; Sunatsuki Y; Kojima M

Chemistry Letters, Vol.40, No.1, 72-74, 2011

DOI10.1246/cl.2011.72 Export Citation

Assembly Structures and Spin Crossover Properties of Facial and Meridional Isomers of Tris[benzyl(2-methylimidazol-4-ylmethylidene)amine]iron(II) Chloride Hexafluorophosphate

Furusho D, Nishi K, Hashibe T, Fujinami T, Hagiwara H, Matsumoto N, Halcrow MA, Iijima S, Sunatsuki Y, Kojima M

Facial- and meridional-isomers of tris[benzyl(2-methylimidazol-4-ylmethylidene)amine]iron(II) chloride hexafluorophosphate with the formulas of fac-[Fe(HLMe-Benz)(3)]Cl center dot PF6 center dot EtOH center dot H2O (1) and mer-[Fe(HLMe-Benz)(3)]Cl center dot PF6 center dot 1.5H(2)O (2) were selectively crystallized in ethanol and methanol, respectively. All three imidazole groups in both the fac- and mer-[Fe(HLMe-Benz)(3)](2+) cations are hydrogen-bonded to neighboring Cl- ions and give the assembly structures. The compounds differ, however, in that 1 has a discrete cubane-like tetranuclear cluster, while 2 forms a two-dimensional (2D) network structure. The magnetic susceptibilities data revealed that 1 and 2 are spin crossover complexes.