A rare ferromagnetic μ1,1,2-oxalato-bridged Cu(II) complex
摘要:
The self-assembly of a newly synthesized 1-(2-carboxyethyl)-4,4'-bipyridinium chloride (HCBpyCl) and (NH4)(2)[Cu(C2O4)(2)] affords a novel one-dimensional oxalato-bridged Cu(II) complex (H(2)CBpy)[Cu(C2O4)(2)]center dot 2H(2)O. This is the first single oxygen-bridged metal coordination polymer constructed by oxalate ligand in relatively scarce mu(1,1,2)-coordination mode. Magnetic susceptibility measurements reveal a weak ferromagnetic interaction between the adjacent Cu(II) ions, which has not been observed in mu(1,1,2)-oxalato-bridged Cu(II) complexes. (C) 2008 Elsevier B.V. All rights reserved.