Abstract
Cis-[M LCl 2] complexes of di-(2-pyridyl)pyrimidin-2-ylsulfanylmethane ligand ( L), where M = Pd ( 1), and M = Pt ( 2) have been synthesized. Reaction of 1 with L in presence of Na[BF 4] and hot acetonitrile produced the complex [Pd L 2](BF 4) 2 ( 3). Complexes 1– 3 and ligand L have been characterized by elemental analyses, IR and NMR spectroscopy. Crystal structures of 1, 3 and L were determined by single crystal X-ray diffraction analyses, showing nonplanar structures with the pyridinic rings twisted around the bridging carbon and the ipso carbon bonds. 1 and 3 displayed a bidentate coordination of L to the palladium atom with the formation of six-membered chelate rings, where the local geometry at palladium atom was distorted square planar. In 3 the palladium atom was coordinated to two dipyridyl ligands through two of the pyridinic nitrogen atoms to form a cationic complex stabilized by two tetrafluoroborate counter-ions.
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