V. Pavlishchuk, S. Kolotilov, E. Sinn
Sep 1, 1998
Citations
0
Influential Citations
16
Citations
Journal
Inorganica Chimica Acta
Abstract
The quadridentate dipyridyl-dithioether ligand 1, 8-bis(2′-pyridyl)-3, 6-dithiaoctane (Pdto) forms a pseudooctahedral complex with nickel(II). Blue [Ni(Pdto)(OH 2 ) 2 ](ClO 4 ) 2 crystallizes in the space group P /2 1 c , with a = 11.677(5), b = 13.255(2), c = 15.804(4)A, β = 107.45(3)° and Z = 4. The ligand is folded about the Ni(II) ion so that the water ligands are cis within an O 2 S 2 plane and the pyridines mutually trans . Reduction by sodium amalgam yields a nickel(I) complex with an axial EPR spectrum, whereas borohydride reduction is very slow. Indeed, the pink adduct [Ni(Pdto)(BH 4 )] + has substantial stability in solution.