We have prepared a series of Cu(II)-pyrazolate complexes of varying nuclearity and characterized them structurally and spectroscopically. The most interesting ones are triangular, trinuclear Cu(II)-pyrazolates of the general formula,  [Cu3(�3-E)(�-4-R-Pz)3X3], where E = OH, O, (Cl)2, (Br)2; R = H, Cl, Br, NO2, CHO, COOR;  X = Cl, Br, RCOO, SCN and trigonal prismatic, hexanuclear complexes of the formula, [{Cu3(�3-O)(�-4-R-Pz)3}2{�-4-R'-3,5-Ph2Pz}3]z, z = 0 and �1. The unique chemical and spectroscopic properties of the complexes have already been well-established by our research group. We will present new results on the redox-induced structural changes and reactivity of these complexes that provide previously inaccessible products. Our discussion will include structural, spectroscopic and computational evidence for the aforementioned reactivity/observations.

Structure, reactivity and spectroscopy of new triangular Cu(II) pyrazolate clusters

243rd National Meeting (2012)

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