The 1,8-bis(2′-pyridyl)-3,6-dithiaoctane Complex of Nickel(II): X-ray Crystal Structure and Borohydride Adduct Formation
The quadridentate dipyridyl-dithioether ligand 1,8-bis(2′-pyridyl)-3,6-dithiaoctane (Pdto) forms a pseudooctahedral complex with nickel(II). Blue [Ni(Pdto)(OH2)2](ClO4)2 crystallizes in the space group P21/c, with a= 11.677(5), b= 13,255(2), c= 15.804(4) Å, 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 O2S2 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)(BH4)]+ has substantial stability in solution. © 1998 Elsevier Science S.A. All rights reserved.
V. V. Pavlishchuk et al., "The 1,8-bis(2′-pyridyl)-3,6-dithiaoctane Complex of Nickel(II): X-ray Crystal Structure and Borohydride Adduct Formation," Inorganica Chimica Acta, Elsevier, Jan 1998.
The definitive version is available at http://dx.doi.org/10.1016/S0020-1693(98)00030-9
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© 1998 Elsevier, All rights reserved.