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Donor Properties of a Series of Two-Electron Ligands

机译:一系列两电子配体的给体性质

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摘要

A large group of two-electron donor ligands were compared and ranked with the help of DFT calculations. The following characteristics were considered: (a) C O stretching frequencies and distances of Ni(CO)(3)L, IrCl(CO)(2)L, and IrCp(CO)L, (b) Ir-(eta(2)-C2H4) bond enthalpies, stretching frequencies, and distances of IrCp(eta(2)-H2C=CH2)L, (c) enthalpies of. the ligand exchange reactions IrCp(CO)L + IrCpXe(PF3) -> IrCp(CO)(PF3) + IrCpXeL and (IrH2CpL)-H-(III) + (IrCpXe)-Cp-(I)(PF3) -> (IrH2CP)-H-(III)(PF3) + (IrCpXeL)-Cp-(I), (d) Ir-(eta(2)-H-2) bond enthalpies and H-H distances of Os(eta(2)-H-2)Cl-2(CO)L-2. Useful trends and correlations have been established for several common ligand types.
机译:比较了一大堆的两个电子供体配体,并借助DFT计算对其进行了排名。考虑了以下特征:(a)CO拉伸频率和Ni(CO)(3)L,IrCl(CO)(2)L和IrCp(CO)L的距离,(b)Ir-(eta(2) -C2H4)的键焓,拉伸频率和IrCp(eta(2)-H2C = CH2)L的距离,(c)的焓。配体交换反应IrCp(CO)L + IrCpXe(PF3)-> IrCp(CO)(PF3)+ IrCpXeL和(IrH2CpL)-H-(III)+(IrCpXe)-Cp-(I)(PF3)-> (IrH2CP)-H-(III)(PF3)+(IrCpXeL)-Cp-(I),(d)Ir-(eta(2)-H-2)键焓和Os(eta(2)的HH距离-H-2)Cl-2(CO)L-2。已经为几种常见的配体类型建立了有用的趋势和相关性。

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