X-ray crystal, magnetic and spectroscopic studies of dicopper mixed-ligand complexes containing bridged bis(β-diketonate) and tetramethylethylenediamine ligands

Y. Y. Lim, W. Chen, L. L. Tan, X. Z. You, T. M. Yao

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Two dicopper(II) complexes, [Cu2(tae)(tmed)2]X2, where tae = 1,1,2,2-tetra-acetylethanediide, tmed = tetramethylethylenediamine and X = NO-3, BPh-4, were synthesized. The X-ray crystal structure of the nitrate salt was determined. The two square planar basal planes containing the copper ions make a dihedral angle of 84.6° with each other. The nitrate ion is coordinated to each of the copper ions at the apex of a square pyramid. Variable temperature magnetic susceptibility measurements on the two complexes gave J values of - 17.6 (NO-3) and -8.7 (BPh-4) cm-1. The ESR and visible spectra of the tetraphenylborate salt are dependent on the solvent basicity.

Original languageEnglish
Pages (from-to)2861-2866
Number of pages6
Issue number20
Publication statusPublished - Oct 1994
Externally publishedYes

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