1ST-ROW TRANSITION-METAL(II) AND GROUP 12-METAL(II) AND GROUP 14-METAL(II) BIS[HYDRIDOTRIS(3-ME-1H-PYRAZOL-1-YL)BORATE] - THE X-RAY CRYSTAL-STRUCTURE OF THE NICKEL DERIVATIVE

Several thermally stable M[L]2 COMPlexes were obtained from the approp riate metal chlorides in aqueous solution (M = Mn, Fe, Co, Ni, Cu, Zn, Cd, Pb) with potassium hydridotris[(3-Me-1H-pyrazol-1-yl)borate]. The y have been investigated by elemental analysis, conductivity measureme nts, IR spectroscopy and, where possible, by H-1 and C-13 NMR. The X-r ay crystal structure of nickel(II)bis[hydridotris(3-Me-1H-pyrazol-1-yl ) borate] has been resolved. Two discrete units with octahedral NiN6 s ites are present. The Ni-N bond lengths range from 2.097(5) to 2.134(4 ) angstrom and the N-Ni-N bond angles from 87.8(2) to 92.4(2)-degrees.