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The synthesis and characterisation of Sn(IV) complexes of 2,6-pyridine dicarboxylate — the molecular structure of divinyltin(IV) derivative

2004; Elsevier BV; Volume: 61; Issue: 8 Linguagem: Inglês

10.1016/j.saa.2004.07.028

1873-3557

L.C.M. Costa, Geraldo Μ. de Lima, José Roberto da Silveira Maia, Carlos A. L. Filgueiras, A.C. Doriguetto, Javier Ellena,

Crystal structures of chemical compounds

A series of organotin(IV) derivatives were obtained employing 2,6-pyridinedicarboxylate as ligand: [{SnBu3(OOC)2C5H3N}n] (1), [SnBuCl(OOC)2C5H3N] (2) and [Sn(CHCH2)2(OOC)2C5H3N] (3). They were fully characterised by multinuclear NMR [1H, 13C{1H}, and 119Sn{1H}], IR spectroscopies and elemental analysis. In addition suitable crystals of (3) have shown a dimmeric arrangement by X-ray crystallographic studies, held together by Sn–O intermolecular interactions which persists in solution. The crystal packing shows hydrogen bonds joining the dimmers, forming two infinite one-dimensional chain. Each monomer comprises a Sn(IV) centre bonded to a pyridinecarboxylate-containing ring, through both nitrogen and oxygen donor atoms. It is also co-ordinated by a water molecule and two vinyl groups.