title: The synthesis and characterisation of Sn(IV) complexes of 2,6-pyridine dicarboxylate--the molecular structure of divinyltin(IV) derivative.
abstract: 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.
authors.affiliation: Laboratório de Química de Coordenação e Organometálica do Estanho, Departamento de Química, UFMG, Belo Horizonte, MG CEP 31270-901, Brazil.
authors.forename: L C M
authors.initials: LC
authors.lastname: Costa
authors.forename: G M
authors.initials: GM
authors.lastname: de Lima
authors.forename: J R
authors.initials: JR
authors.lastname: da S Maia
authors.forename: C A L
authors.initials: CA
authors.lastname: Filgueiras
authors.forename: A C
authors.initials: AC
authors.lastname: Doriguetto
authors.forename: J
authors.initials: J
authors.lastname: Ellena
mesh_terms: D002244:Carbon / Q000737:chemistry; D002264:Carboxylic Acids / Q000138:chemical synthesis / Q000737:chemistry*; D018360:Crystallography, X-Ray; D019281:Dimerization; D006859:Hydrogen / Q000737:chemistry; D006860:Hydrogen Bonding; D008024:Ligands; D009682:Magnetic Resonance Spectroscopy; D008956:Models, Chemical; D008958:Models, Molecular; D008968:Molecular Conformation; D015394:Molecular Structure; D009584:Nitrogen / Q000737:chemistry; D010100:Oxygen / Q000737:chemistry; D010848:Picolinic Acids; D011108:Polymers / Q000737:chemistry; D011725:Pyridines / Q000138:chemical synthesis / Q000737:chemistry*; D014001:Tin / Q000737:chemistry*
chemical_list: D002264:Carboxylic Acids; D008024:Ligands; D010848:Picolinic Acids; D011108:Polymers; D011725:Pyridines; D014001:Tin; D002244:Carbon; D006859:Hydrogen; D009584:Nitrogen; D010100:Oxygen; C004860:dipicolinic acid