Et4NC2O4SnPh3.2SnPh3Cl and Cy2NH2C2O4SnPh3.2SnPh3Cl: Synthesis and Spectroscopic Characterization

Two trinuclear oxalate tin (IV) adducts have been synthesized and characterized by elemental analyses, infrared and Mössbauer techniques. The suggested structures are discrete, oligomeric or polymeric, the anion behaving as a monochelating and bidentate ligand in one case while being a tetracoordinating ligand in the second one. The environment of the tin centre is trigonal bipyramidal, the SnPh 3 residue being cis or trans coordinated