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Published on: July 23, 2016
A Heterobimetallic Vanadium-Manganese Complex as a Model for the Structural Dynamics in Oxo-Bridged Metal Dimers
Norman S. Dean1, Jennifer K. Cooper, Roman S. Czernuszewicz
1Departments of Chemistry, Southwest Texas State University, San Marcos, Texas 78666, and University of Houston, Houston, Texas 77204.
Abstract:
The heterobimetallic complex 1, [LV(&mgr;-O)(&mgr;-OAc)(2)MnL] (where L = hydridotris(pyrazolyl)borate), has been synthesized and characterized. X-ray crystal structural analysis of 1 gave the following parameters: C(24)H(29)B(2)N(13)O(5)VMn, Cmc2(1), a = 13.364(2) Å, b = 17.383(3) Å, c = 14.132(3) Å, Z = 4, V = 3289.9(16) Å(3). An analysis of the structure, optical and resonance Raman spectroscopies, and magnetic measurements indicates that a V(IV)=O.Mn(II) valence formulation is the best description of the oxo-bridged core in 1, although other resonance forms must also contribute.
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