Electrical Conductivity and Spin Crossover: A New Achievement with a Metal Bis Dithiolene Complex
作者:Christophe Faulmann、Kane Jacob、Stéphane Dorbes、Stéphane Lampert、Isabelle Malfant、Marie-Liesse Doublet、Lydie Valade、José A. Real
DOI:10.1021/ic062461c
日期:2007.10.1
Three new compounds based on the cationic complex [Fe-III(3-RsalEen)(2)](+) (salEen stands for N-(2-ethylamino)-ethyl)-salicylaldimine, R = H, CH3O) with the electroactive Ni(dmit)(2) species as a counterion (dmit stands for 1,3-dithia-2-thione-4,5-dithiolato) have been synthesized and structurally and magnetically characterized. Compound 1 ([Ni(dmit)(2)][Fe(3-OMe-salEen)(2)], CH3OH) shows an apparent hysteresis loop, due to an irreversible desolvatation process. Compound 2 ([Ni(dmit)(2)](NO3)[Fe(salEen)(2)](2)) exhibits a gradual and incomplete spin transition. Compound 3 ([Ni(dmit)(2)](5)[Fe(salEen)(2)](2), 6CH(3)CN) is a fractional oxidation state complex, which behaves like a semiconductor and exhibits a gradual but complete spin transition between 300 and 4 K.