Diphosphanes with Polarized and Highly Reactive P P Bonds

S Burck, D Gudat, M Nieger

文献索引：Burck, Sebastian; Gudat, Dietrich; Nieger, Martin Angewandte Chemie - International Edition, 2004 , vol. 43, # 36 p. 4801 - 4804

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被引用次数: 41

摘要

Single bonds are described in the valence-bond (VB) model in terms of resonance between covalent and ionic canonical structures (Scheme 1).[1] Whereas the covalent canonical structure is dominant for homoatomic bonds (AÀB), the weight of the appropriately polarized ionic canonical structure prevails for heteroatomic bonds with a large electronegativity difference (cA! cB). As a result, this leads to a lower covalent bond order and a substantial ...