Rh_2(CO)_4(μ-Cl)_2和Rh_4(μ-CO)_3(CO)_9的简正振动分析

Normal Vibrational Analyses of Rh_2(CO)_4(μ-Cl)_2 and Rh_4 (μ-CO)_3(CO)_9

金属簇合物因其独特的结构和成键而引人注目，鉴于文献上对铑簇合物的结构、成键、反应和催化性能存在的不同看法，本文的两个铑簇合物的简正振动分析以及另文的铑系簇合物的电子结构计算和催化性能研究，为进一步认识上述问题提供了有意义的结果。

Force constants of Rh_2(CO)_4(μ-Cl)_2 and Rh(μ-CO)_3(CO)_9 were obtained on the basis of general valence force field computation. The calculated frequencies are in good agreement with the observed spectra. The strength of M-M and M-L bonds, the effects of bridging ligands on M-M stretching, and the various approximate force fields for clusters are discussed.