Browsing by Author "GRANDJEAN, D"

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    MAGNETOSTRUCTURAL CHARACTERIZATION OF A MONOHYDROXO-BRIDGED, 1,1,2,2-TETRAKIS(2-PYRIDYL)ETHYLENE-BRIDGED COPPER(II) DIMER
    (1991) SPODINE, E; MANZUR, J; GARLAND, MT; KIWI, M; PENA, O; GRANDJEAN, D; TOUPET, L
    The molecular structure of [Cu2(dpm)2L(OH)][ClO4]3.2H2O [dpm = di(2-pyridyl)methane; L = 1,1,2,2-tetrakis(2-pyridyl)ethylene] has been determined by single-crystal X-ray diffraction: triclinic, space group P-1, a = 11.685(3), b = 14.569(2), c = 15.509(4) angstrom, alpha = 87.97(2), beta = 73.34(2), gamma = 74.15(1)-degrees and Z = 2. The copper co-ordination geometry can be described as a square-based pyramid with the two copper(ll) centres bridged by two groups, N-C-C=C-C-N from L and the hydroxide ion. The bridging angle Cu-O-Cu is 137.9(4)-degrees and the copper centres are separated by 3.663(3) angstrom. Magnetic susceptibility data collected as a function of temperature (5-400 K) are indicative of a relatively strong antiferromagnetic interaction (2J almost-equal-to -360 cm-1).