Mössbauer study of the solid state configuration of triorganotin derivatives with intramolecular coordination
article
Triorganotin bromides with intramolecular nitrogen-to-tin coordination (I-VIII, Fig. 1) have been structurally investigated by M??ssbauer and infrared spectroscopy. M??ssbauer-Zeeman spectra have been measured for I and VIII in order to obtain the sign of the nuclear quadrupole splitting ??E and the value of the asymmetry parameter ??. Point-charge model values of ??E and ?? have been calculated for environments of tin atoms in I-VIII which are plausible in view of the results of previous investigations. From trends of experimental ??E in the series, and from the agreement between experimental and calculated M??ssbauer parameters it is concluded that the compounds I-VIII all have trigonal bipyramidal structures with equatorial SnC3 skeletons. In compound VIII only one of the two Me2NCH2 ligands intramolecularly coordinates to tin similar to the situation observed for VIII in solution at low temperature. ?? 1980.
TNO Identifier
228928
ISSN
00201693
Source
Inorganica Chimica Acta, 40(C), pp. 267-271.
Pages
267-271
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