Abstract
An updated compendium of silatrane structural data is presented. The relationships between nonplanarity at silicon (δSi) andd(N-Si), the length of the dative bond, and nonplanarity at nitrogen ΔN andd(N-Si) are examined. Excluding a platinum-substituted derivative: the ΔSi relationship is strong and predicts the limiting length of a strong N → Si bond, while the ΔN relationship is weak. A good relationship between ΣσI for the four (non-N) exo- and endocyclic substituents attached to Si holds for silatranes, methyl, keto, and diketo derivatives as well as for 2-carbasilatranes. The relationship fails for strong π-donor exocyclic substituents, implicating resonance, and for benzo- and tribenzosilatranes, where steric effects dominate.
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On Leave of Absence from Academia Sinica, Beijing, People's Republic of China.
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Greenberg, A., Wu, G. Structural relationships in silatrane molecules. Struct Chem 1, 79–85 (1990). https://doi.org/10.1007/BF00675787
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DOI: https://doi.org/10.1007/BF00675787