Structural studies on organotin(IV) complexes formed with ligands containing {S,N,O} donor atoms |
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| Authors: | A. Szorcsik L. Nagy K. Gajda-Schrantz L. Pellerito E. Nagy F. T. Edelmann |
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| Affiliation: | (1) Biocoordination Research Group of Hungarian Academy of Sciences, Department of Inorganic and Analytical Chemistry, Szeged University, H-6701 Szeged, Hungary;(2) Department of Inorganic and Analytical Chemistry, Szeged University, H-6701 Szeged, Hungary;(3) Department of Inorganic Chemistry, University of Palero, Palermo, Italy;(4) Department of Chemistry, Otto-von-Guericke University, Universitätplatz 2, Geb, M D-39106 Magdeburg, Germany |
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| Abstract: | A number of complexes of ligands containing {O,N,S} donor atoms (2,3,4,6-tetra-O-acetyl-b-D-thioglucopyranoside, 1-thio-b-D-glucose, 2-aminomercaptopurine, 4-amino-2-mercaptopyrimidine and 2-amino-6-mercaptopurine-9-D-riboside) with di-n-butyltin(IV) oxide, diphenyltin(IV) oxide, tribenzyltin(IV) chloride, and trimethyltin(IV) chloride were prepared in the solid state. It was found that the complexes contain the organotin(IV) moiety and the ligand in a ratio of 1:1 or 2:1. The FTIR and Raman spectra clearly demonstrated that the organotin(IV) moieties react with the {S} atom of the ligands, while di-n-butyltin(IV) oxide is coordinated to the deprotonated hydroxy group. In several cases, the basic part of the ligands also participates in complex formation. Comparison of the experimental Mössbauer D values with those calculated on the basis of the pqs concept revealed that the organotin(IV) moiety has trigonal-bipyramidal geometry, and in certain cases tetrahedral geometry too. Some of the complexes contain the organotin(IV) cation in two different surroundings. |
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