Analyse conformationnelle théorique des complexes acide-base de lewis

作者: Marie-Chantal Bach-Chevaldonnet , François Crasnier , Jean-François Labarre , Claude Leibovici

DOI: 10.1016/0022-2860(74)85077-5

关键词: Phosphorus atomChemistryAdductCNDO/2StereochemistryMoleculeDipoleElectronic structure

摘要: Abstract The conformational analysis and the electronic structure of trimethyl-phosphine-borane Lewis adduct are investigated within framework CNDO/2 approximation. methyl groups take up Lem conformation whole molecule is staggered with respect to P · B bond. rotational barriers around P-C bonds respectively 4.09 3.83 kcal mole−1. Their origin due spatial energy interaction terms between phosphorus atom 12 hydrogens. computed value dipole moment (6.0 D) matches two available experimental data.

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