LINEAR TRINUCLEAR COPPER(II) COMPLEXES BRIDGED BY OXIMATO AND AZIDO OR HYDROXO GROUPS

The linear trinuclear copper(II) complexes Cu-3(L(1))(2)(N-3)(2) (NO3) (2) . 2H(2)O . 2CH(3)OH 1 and Cu-3(L(1))(2)(OH)(2)(ClO4)(2) 2 containi ng 3-[{2-(2-pyridinyl)ethyl}imino]-2-butanone oximato ligand (L(1)) we re prepared; the crystal structure of I was determined by X-ray crysta llography. Magnetic susceptibility measurements from liquid helium tem perature to room temperature showed a very strong antiferromagnetic ex change coupling between copper(II) ions(J = -266 cm(-1) and -245 cm(-1 ) for 1 and 2, respectively, H = -2JS(1) . S-2).