A high-pressure micro-Raman study of crystalline tricarbonyl(.eta.5-cyclopentadienyl)rhenium(I), (.eta.5-C5H5)Re(CO)3
A high-pressure micro-Raman study of crystalline tricarbonyl(.eta.5-cyclopentadienyl)rhenium(I), (.eta.5-C5H5)Re(CO)3
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结晶三羰基(eta.5-环戊二烯基)铼(I)、(eta.5-C5H5)Re(CO)3的高压显微拉曼研究
DOI：
10.1021/ic00005a040
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发表时间：
1991
期刊：
影响因子：
--
通讯作者：
D. Gilson
中科院分区：
文献类型：
--
作者：
Yining Huang;I. Butler;D. Gilson
在40 kbar以下的几种不同压力下记录了结晶CpRe（CO）_3（Cp= ns-CsHs）的显微拉曼光谱。在波数/压力（V-，/P）曲线的斜率中，在约9 kbar处观察到的大多数基本面的不连续性表明发生了相变。CO和Re-CO伸缩模式的压力依赖性表明，Re原子和CO基团之间的背键相互作用明显加强，通过增加在低压相的外部压力，最有可能是由于增加的电荷转移从Cp环的金属。从分子内和分子间相互作用的角度讨论了压力对几种基模的影响。
Micro-Raman spectra of crystalline CpRe (CO) 3 (Cp= ns-CsHs) have been recorded at several different pressures up to 40 kbar. The discontinuities observed for most of the fundamentals at about 9 kbar in the slopes of the wavenumber/pressure (v-,/P) plots suggest the occurrence of a phase transition. The pressure dependences of the CO and Re-CO stretching modes indicate that the back-bonding interactions between the Re atom and the CO groups are appreciably strengthened by increasing external pressure in the low-pressure phase, most probably due to increased charge transfer from the Cp ring to the metal. The effects of pressure on several of the fundamental modes are discussedin terms of intra-and intermolecular interactions.