Syntheses, Crystal Structures, Magnetic Properties, and EPR Spectra of Tetranuclear Copper(II) Complexes Featuring Pairs of “Roof-Shaped” Cu<sub>2</sub>X<sub>2</sub> Dimers with Hydroxide, Methoxide, and Azide Bridges
作者:Bim Graham、Milton T. W. Hearn、Peter C. Junk、Christopher M. Kepert、Frank E. Mabbs、Boujemaa Moubaraki、Keith S. Murray、Leone Spiccia
DOI:10.1021/ic000991h
日期:2001.3.1
weak antiferromagnetic coupling (J = -27 cm(-1)) for the hydroxo-bridgedcopper(II) centers in 2 and very strong antiferromagnetic coupling (J = -269 cm(-1)) for the methoxo-bridged copper(II) centers in 3. Pairs of copper(II) centers in 4 display the strongest ferromagnetic interaction (J = 94 cm(-1)) reported thus far for bis(mu2-1,1-azido)-bridged dicopper units. Spectral measurements on a neat powdered