Light-induced excited-spin-state trapping in iron(II) spin-crossover systems. Optical spectroscopic and magnetic susceptibility study

摘要: Single-crystal optical absorption spectra of the iron(I1) sph-crossover compounds [Fe(pt~)~]@F~), (ptz = 1-propyltetrazole) and [Fe(2-pi~)~]Cl,.EtOH (2-pic 2-(aminomethy1)pyridine) have been.measured between room temperature 8 K. The wellestablished thermally induced spin transition high (?,& + low (lAIg) as well recently discovered phenomenon 'light-induced excited-spin-state trapping (LIWT)" is followed analyzed. A kinetic study by spectroscopy relaxation from light-induced high-spin (HS) state to low-spin (LS) has been carried out for [Fe(ptz),](BF,), in range 53-61 magnetic susceptibility HS this compound also measured.