| ELECTRONIC STRUCTURE AND CHEMICAL BONDING OF BIS(TRIMETHYLSILYL)AMIDE DERIVATIVES OF LANTHANIDES(Ln(N(SiMe_3)_2)_3, Ln=Nd, Eu, Yb) |
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| 作者姓名： | 任镜清 徐光宪 |
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| 作者单位： | Department of Chemistry，Peking University，Department of Chemistry，Peking University |
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| 基金项目： | Project supported by the Science Fund of the Chinese Academy of Sciences. |
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| 摘 要： | The electronic structure and chemical bonding of Ln(N(SiMe_3)_2)_3 have been studied by INDO calcula-tions. The results have shown that the Ln-N bonds are considerably covalent in character and that thecovalency decreases with increasing atomic numbers. A new explanation of the pyramidal structure of thecompounds has been proposed based on 5d orbital participation in bonding. With the calculation of asimplified model of Eu(N(SiMe_3)_2)_3. OPPh_3, the roles of electronic and steric effects in bonding have beencompared.
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