Synthesis of Binuclear Monohydroxo Bridged Copper(II) Complexes with 1,10-Phenanthroline and 4,4'-Dimethyl-2,2'-Bipyridine

Abstract

<em>Tow new compound of type [(chelate)₂Cu-OH-Cu(chelate)₂] X₃.nH₂O, where chelate=1,10-phenanthroline; X=Cl¯(n=3.5) and chelate=4,4'-dimethyl-2,2'-bipyridine; (n=5) have been synthesized and their properties investigated. The complexes show room temperature magnetic moment order of 1.0 B.M. per copper atom. The X-band ESR spectrum of powdered samples at room temperature shows typical </em><em>D</em><em>m=1 transition at g_av=2.075 for 1,10-phenanthroline and g_av=2.085 for 4,4'-dimethyl-2,2'-bipyridine, and much weaker </em><em>D</em><em>m=2 transition at half field which is the characteristic of dimeric unit</em><em>.</em>