期刊
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
卷 -, 期 29, 页码 4574-4578出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.200700640
关键词
polydentate ligands; triazolopyridine ligands; copper(II) complexes; tetranuclear complexes; molecular magnetism
A new tetranuclear cubane CU4O4 complex has been synthesised from assembly of Cull ions and the polydentate ligand (pyridin-2-yl){6-([1,2,3]triazolo[1,5-alpha]pyridin-3-yl)pyridin-2-yl}methanone. Crystallographic analysis indicates that the CU4O4 unit has an S-4 symmetry. The magnetic properties have been analysed using the H = -2(i,j)Sigma J(ij)S(i)S(j) spin Hamilto- man. Two distinct coupling constants, 2J(1,3) = -37.4 cm(-1) and 2J(1,2) = -2.6 cm(-1), obtained from the fitting of the experimental data have been rationalised on the basis of a density functional study of magnetostructural correlations in cubane complexes containing the CU4O4 core.
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