Molecular Structure of 1,3,5-Tris (Trimethylstannyl) Benzene: An Electron Diffraction Study |
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| Authors: | Schultz György Hargittai István Rot Nicolette Bickelhaupt Friedrich |
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| Affiliation: | (1) Structural Chemistry Research Group of the Hungarian Academy of Sciences, Eötvös University, P.O. Box 117, H-1431 Budapest, Hungary;(2) Institute of General and Analytical Chemistry, Budapest Technical University, Szt. Gellért tér 4, H-1521 Budapest, Hungary;(3) Scheikundig Laboratorium, Vrije Universiteit, De Boelelaan 1083, NL-1081 HV Amsterdam, The Netherlands |
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| Abstract: | The molecular structure of 1,3,5-tris (trimethylstannyl) benzene has been determined by gas-phase electron diffraction. The C — C bond length is in good agreement with that in benzene. In agreement with the somewhat electron-releasing character of the substituents, the endocyclic bond angles at the substituents are somewhat smaller than 120°. The mean value of Sn — C bond lengths is greater than that in tetraphenyltin and tetramethyltin. The SnMe3 groups appear freely rotating around the Caryl — Sn bonds. The following bond lengths (rg) and bond angles were determined: (Sn — C)mean 2.150 ± 0.007 Å, C — C 1.399 ± 0.005 Å, (C — H)mean 1.105 ± 0.006 Å, < C — C(Sn) — C 117.7 ± 1.7º, < Caryl — Sn — Cmethyl 106.7 ± 0.7º < Sn — C — H 111.5 ± 0.9º. |
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| Keywords: | Electron diffraction structure l,3,5-tris (trimethylstannyl) benzene |
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