A Study of Competitive Coordination of Benzochalcogenazole Ligands by Heteronuclear NMR Spectroscopy |
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| Authors: | Borodkina I. G. Uraev A. I. Borodkin G. S. Sadekov I. D. Garnovskii A. D. Minkin V. I. |
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| Affiliation: | (1) Reaearch Institute of Physical and Organic Chemistry, Rostov State University, Rostov-on-Don, Russia |
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| Abstract: | Complexes of 2-methyl(phenyl)benzo-1,3-tellurazole and 2-methyl(phenyl)benzo-1,3-selenazole with tungsten pentacarbonyl and boron trifluoride were studied by heteronuclear NMR spectroscopy (1H, 13C, 77Se, and 125Te). The coordination mode of the ambident ligand can be determined from the coordination shifts of the 125Te and 77Se NMR signals: upfield at coordination via Te and Se atoms and downfield at N coordination. |
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