Synthesis and characterization of adducts of bis(O,O '-ditolyl/dibenzyl dithiophosphato)cobalt(II) with pyridine: Crystal structures of [Co{S2P(OC6H4Me-p)(2)}(2)(C5H5N)(2)] and [Co{S2P(OC6H4Me-p)(2)}(2)(NH3)]

摘要

Bis(O,O'-ditolyl/dibenzyl dithiophosphato)cobalt(II) complexes with pyridine ligands of the type [Co{S2P(OR)(2)}(2)(C5H5N)(2)] (R = o-, m-, p-C6H4Me, CH2Ph) have been synthesized by the reaction of CoCl2(C5H5N)(2) and the corresponding ammonium salt of O,O'-ditolyl/dibenzyl dithiophosphate in methanol. These newly synthesized adducts were characterized by elemental analysis, IR, UV-Vis spectroscopy, magnetic susceptibility measurements and single crystal X-ray diffraction. These structures confirm that in the pyridine complex the geometry around the cobalt metal centre is distorted octahedral, and in the amine complex it is distorted trigonal bipyramidal. (C) 2008 Elsevier Ltd. All rights reserved.