A new copper(II) di-mu(2)-carboxylato bridged dinuclear complex: [Cu(oda)phen](2) center dot 6H(2)O(oda = oxydiacetate, phen = phenanthroline)

BAGGIO, R. F.; CALVO, R.; GARLAND, M. T.; PEÑA, O.; PEREC, M.; SLEP, L. D.

INORGANIC CHEMISTRY COMMUNICATIONS

Elsevier

Lugar: Suiza; Año: 2007 vol. 10 p. 1249 - 1252

1387-7003

The oxydiacetate-bridged copper(II) complex [Cu(oda)(1,10-phen)] center dot 3H(2)O (oda = oxydiacetate dianion, 1, 10-phen = 1, 10-phenanthroline) has been characterized. The complex is dinuclear and centrosymmetric with each copper atom residing in a CuN2O4 octahedral environment. The Cu(II) ions are bridged by two carboxylate-oxygen atoms in a strictly planar CU2O2 core with a Cu-Cu distance of 3.417(2) (A) over circle. The magnetic susceptibility measurements (2-300 K) show weak ferromagnetic coupling between the copper ions with J=3.3 cm(-1). The results are compared with those of the homologous [Cu(tda)(1,10-phen)](2)tda (tda = thiodiacetate dianion). A model proposed for the electronic structures of the complexes based on the density functional theory (DFT) satisfactorily accounts for the magnetic results.