Nickel(II) complexes with boron cluster anions [B n H n ]2- (n=10, 12) and azaheterocyclic ligands L (L = Bipy, Phen, BPA, and DAB)

The effect of the nature of azaheterocyclic ligands L (L is 1,2-diaminobenzene, 2,2'-bipyridyl-amine, 2,2'-bipyridyl, or 1,10-phenanthroline) on the composition and structure of nickel(II) coordination compounds with the [B (n) H (n) ](2-) anions (n = 10, 12) has been studied. Conditions to isolate complexes of general formulas [NiL2(H2O)(2)][B (n) H (n) ] and [NiL3][B (n) H (n) ] have been found. The structures of [Ni(DAB)(2)(H2O)(2)][B10H10] center dot H2O, [Ni(BPA)(2)(H2O)(2)][B10H10] center dot 3H(2)O, [Ni(Bipy)(3)][B10H10], [Ni(Bipy)(3)][B10H10] center dot 3CH(3)CN center dot 0.5H(2)O, [Ni(Phen)(3)][B10H10] center dot 4DMF center dot 0.32H2O[Ni(Phen)3][B12H12] center dot 1.5DMF center dot 0.25H(2)O, and [Ni(Phen)(3)](Et3NH)[B10H10](1.5) center dot 1.75CH(3)CN have been determined by X-ray diffraction. Structural features of the complexes including intermolecular contacts of different elements of the structures are discussed.