Conclusion
The electron-donating capacities of tin-containing amines depend almost exclusively on the donor-acceptor properties and steric effects of the substituents at the N atom. The effect of dπ-pπ interaction in the Sn-N fragment of the tin-containing amines, unlike the analogous interaction in their silicon and germanium analogs, is hardly apparent. An increase in the number of trialkylstannyl radicals at the N atom leads to a fall in the donor capacity on passing from mono- to bis(trialkylstannyl)amines and to a considerable rise in this capacity in the tris(trialkylstannyl)amines. The donor properties of the dialkylamino-tannanes fall with an increase in the number of amino groups at the Sn atom.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 6, pp. 1294–1298.
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Skobeleva, S.E., Egorochkin, A.N., Bogoradovshii, E.T. et al. A study of the electron-donating capacity of tin-containing amines by the IR-spectroscopic method. Russ Chem Bull 31, 1153–1157 (1982). https://doi.org/10.1007/BF00955967
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DOI: https://doi.org/10.1007/BF00955967