A unique mixed-bridged trinuclear Co (II) complex and its extended system: Structural and magnetic studies
摘要:
Two novel complexes, [Co-3(N-3)(2)(bca)(4)(phen)(2)] (1, bca = benzenecarboxylic acid, phen = 1,10-Phenanthroline) and [Co-3(N-3)(2)(bdc)(2)(Phen)(2)](n) (2, bdc = terephthalic acid), have been synthesized hydrothermally and characterized by single crystal X-ray diffraction (XRD), infrared spectra (IR) and element analysis (EA). Complex 1 features unprecedented discrete linear Co-3 clusters that formed by mixed (mu-EO-N-3)(mu-COO)(2) (EO = end-on) triple bridges whereas 2 presents an extended (2D) network based on the similar trinuclear units as 1. Magnetic studies of 1 and 2 reveal that the mixed (mu-EO-N-3)(mu-COO)(2) triple bridges transmit ferromagnetic behavior. (C) 2011 Elsevier B.V. All rights reserved.