245068-31-9Relevant academic research and scientific papers
Mono-aryltin(IV) and mono-benzyltin(IV) complexes with pyridine-2-carboxylic acid and 8-hydroxyquinoline. X-ray structure of p-chloro-phenyl-tris(8-quinolinato)tin(IV)-2CHCl3
Schuermann, Markus,Schmiedgen, Ralf,Huber, Friedo,Silvestri, Arturo,Ruisi, Giuseppe,Paulsen, Adriana Barbieri,Barbieri, Renato
, p. 103 - 117 (2007/10/03)
Complexes RSn(O2CPy)3·2H2O and RSn(Ox)3, (PyCOOH = pyridine-2-carboxylic acid, HOx = 8-hydroxyquinoline, R = o- and p-Tolyl, o- and p-ClC6H4 = o- and p-ClPh, o-ClC6H4CH2 = o-ClBenzyl; besides, R = Ph in RSn(Ox)3) have been synthesized and characterized by elemental analysis and determination of molecular weights in CHCl3 solutions. The structure of p-ClPh-Sn(Ox)3·2CHCl3 has been determined by X-ray diffractometry. The 7-coordinated tin atom of the monomeric compound is in the center of a pentagonal bipyramid formed by (p-ClPh)C and O and N atoms of the chelating Ox- ligands. The latter type of structure would hold for all complexes according to 119Sn Moessbauer (including the determination of the dynamics of 119Sn nuclei) and IR spectroscopy in the solid state; the ligand -O2CPy appears to chelate Sn through one oxygen atom of the -COO- group and the N atom, although the occurrence of one chelating and two monodentate PyCO-2 ligands (through -COO-), and coordination by the H2O molecules to Sn cannot be excluded. In CDCl3 and CHCl3 solutions, the persistence of the pentagonal bipyramidal species is assumed, in line with 1H-, 13C-, 119Sn-NMR and UV-vis spectroscopic studies.
