Synthesis, crystal structure and magnetic properties of a 1D mixed-metal-mixed-ligand Ni(II)/Fe(II) coordination polymer built on the nitroprusside anion

摘要

A new complex [Ni(L)Fe(CN)(5)NO]center dot 2H(2)O (L=4,6,6-trimethyl-1,9-diamino-3,7-di-aza-nona-3-ene) has been obtained and characterized by means of X-ray crystallographic analysis and magnetochemistry. The Fe(CN)(5)NO2- anion links to the Ni(L)(2+) cation through two bridging cyanide groups in a bent fashion. The intrachain Ni center dot center dot center dot Ni and interchain Ni center dot center dot center dot Ni distances are equal to 9.81(8) and 7.75(1) angstrom, respectively. The magnetic behaviour of the complex indicates the zero field splitting parameter D higher than 3 cm(-1) and the average exchange parameter (intra- and interchain) corresponding to direct Ni-Ni magnetic interaction in the crystal lattice equals similar to-0.2 cm(-1). (C) 2007 Elsevier B.V. All rights reserved.