Metal derivatives of poly(pyrazolyl)alkanes

This review summarizes the literature concerning metal complexes of bis(pyrazolyl)alkane ligands R2C(pzx)2 and follows a previous article describing the coordination chemistry of tris(pyrazolyl)alkanes [C. Pettinari, R. Pettinari, Coord. Chem. Rev., in press]. A comprehensive survey of bis(pyrazolyl)alkanes coordination chemistry, based on the nature of the metal, is presented, together with the main synthetic methods and spectroscopic and structural features of this important class of ligands.