Chemistry Letters, Vol.41, No.7, 716-718, 2012
Spin Crossover and Light-induced Excited Spin-state Trapping Observed for an Iron(II) Complex Chelated with Tripodal Tetrakis(2-pyridyl)methane
A novel iron(II) complex [Fe(py(4)C)(2)][Fe(py(4)C)(NCS)(3)](2) was synthesized, where py(4)C stands for tetrakis(2-pyridyl)methane. Spin crossover occurred at 161 K (T-1/2). Light-induced excited spin-state trapping was observed when irradiated with 532 nm at 10 K, and the conversion was 89%. The relaxation took place at 58 K on heating.