Chlorotriphenyl(quinolinium-2-carboxylato)tin(IV) monohydrate

• Published in: Inorganica Chimica Acta Vol. 105; no. 2; pp. 103 - 106
• Main Authors: Gabe, E.J., Lee, F.L., Khoo, L.E., Smith, F.E.
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 01.01.1985; Elsevier Science
• Subjects: Condensed matter: structure, mechanical and thermal properties; Exact sciences and technology; Inorganic compounds; Metal complexes; Physics; Structure of solids and liquids; crystallography; Structure of specific crystalline solids; Aryl complex; Tin IV Complexes; Molecular structure; Complexes Mixed; Carboxylate; Organic ligand; Chloro complex; Tin Organic compounds; Experimental study; X ray diffraction; Inorganic compound; Crystalline structure
• ISSN: 0020-1693; 1873-3255
• DOI: 10.1016/S0020-1693(00)90547-4

The crystal structure of chlorotriphenyl(quinolinium-2-carboxylato)tin(IV) monohydrate is reported. The crystals are monoclinic, space group C2/ c with cell parameters a = 20.048(3) Å, b = 11.724(1) Å, c = 23.291(3) Å, ]gb = 113.42(1), Z = 8, refined to R F = 0.034 on 3331 observed reflections. The tin(IV) atom is five-coordinate, being found to three phenyl groups, the chlorine atom and an oxygen from the quinaldic acid. The geometry around the tin atom is trigonal bipyramidal, with the three phenyl groups occupying the equatorial positions, and the chlorine and quinaldic acid oxygen, the apical ones. The acidic proton of quinaldic acid has shifted position in the complex, and is bound to the heterocyclic nitrogen atom. The acid is thus coordinated in the form of a zwitterion. These trigonal bipyramidal units are linked together as dimers by pairs of water molecules, each of which hydrogen-bonds to the non-coordinated carboxylate oxygen atoms of both quinaldic acid molecules, plus the heterocyclic nitrogen atom of one quinaldic acid molecule. For complex formation with the protonated acid, the heterocyclic nitrogen should be alpha to the carboxylic acid group.