Dihydrobis(4-cyano-3-phenylpyrazol-1-yl)borate: Homoleptic Mononuclear Cobalt(II) and Copper(II) Complexes with a Cyano-Substituted Scorpionate Ligand A bulky phenyl substituent in the 3-position prevents coordination of the cyano group and allows isolation of the first homoleptic mononuclear complexes of a cyano- substituted bis(pyrazolyl)borate ligand.