A new family of spin-crossover complexes based on a FeII(tetrazolyl)4(MeCN)2-type core

Inorg Chem. 2008 Jun 2;47(11):4436-8. doi: 10.1021/ic8002993. Epub 2008 Apr 29.

Abstract

A bitopic ligand 2-hydroxy-1-(tetrazol-1-yl)-3-(tetrazol-2-yl)propane (12pbtzOH) was synthesized and reacted with Fe(ClO4)(2).6H2O, giving a 1D coordination polymer {[Fe(12pbtzOH)2(CH3CN)2](ClO4)(2).2CH3CN} infinity that exhibits a high-spin to low-spin transition (T1/2(downward arrow)=T1/2(upward arrow) congruent with 104 K). This is an unprecedented example of an iron(II) complex containing Fe(tetrazolyl) 4(MeCN)2 cores.