A two dimensional heterospin layer coordination polymer of {[LCuIIGdIII(NO3)CuI2(CN)4]·MeOH}n with short CuI⋯CuI bonds

Abstract

Reaction of [LCu^IIGd^III(NO₃)₃] (L = N,N′-ethylenebis(salicylideneimine)) and [LiTCNE] (TCNE = tetracyanoethylene) in MeOH–CH₃CN affords an unexpected cyano-bridged coordination polymer {[LCu^IIGd^III(NO₃)Cu^I₂(CN)₄]·MeOH}_n (1) featuring unexpectedly short Cu^I⋯Cu^I bonds (2.470(2) Å). X-ray crystallographic analysis reveals that 1 possesses a two dimensional heterospin layer structure comprised of a chain of five-membered rings. The magnetic analysis of 1 reveals a ferromagnetic interaction between the Gd^III and Cu^II ions.