I.r. spectroscopy on their polystyrene-bonded forms indicates that with complexes of the type (η5-C5H5)W(CO)3R (R = H, Cl) olefin metathesis proceeds with preservation of the structural unit (η-C5H5)W(CO)3.DOI: 10.1039/C39870001152 年份: 1987 收藏 引用 批量引用 报错 分享 全部来...
This effect has been observed in other systems and ascribed to hydrogen bond [9,27,28]. The fitting of the broadband spectrum in 𝐷2𝑂D2O (Figure 4 on the left) of the 𝛽−𝑙𝑎𝑐𝑡𝑎𝑚β−lactam and of the Amide I provide an anharmonicity of 27 cm−1−1. In ...
The computed value for Pd1O/CeO2(100) of 2099 cm−1 is very close to the experimental value of the most intense peak (2098 cm−1) in the CO IR spectrum. Different from CeO2(111), a Pd1O2 species located on the (100) surface does not adsorb CO. CO adsorption on a single...
A thorough study of the infrared spectrum of the gem-dicarbonyl species as a function of surface concentration indicates that there is only one kind of RhI site involved, and that the sharp ir bands observed for RhI(CO)2 are homogeneously broadened. We have observed the reversible ...
In this paper, we present a rich (4 strong F1u first-order and an additional 98 weak lines) ir spectrum for a 4-μm-thick C60 film on KBr in the range 400... KA Wang,AM Rao,PC Eklund,... - 《Physical Review B》 被引量: 124发表: 1993年 Infrared rotation and vibration-rotation...
4b). Second, the binding energies for all the models were calculated by summing the Pt–support bond energies for individual Pt atoms that have different coordination numbers in the cluster (Fig. 4c). Finally, the binding energy of each model was plotted as a function of the number of Pt ...
The partial covalent character of metal–ligand bond has been proposed with the help of gǁ value that is less than 2.3. Download: Download full-size image Fig. 3. ESR spectrum of Cu(L)2. 3.6. Thermal analysis To determine the thermal stability and chemical composition of 1:2 Co(II...
The Rh K-edge XANES simulations were conducted using the ab initio FEFF 8 program69. The structural models from DFT calculations were used for the atomic coordinates in the FEFF input cards. A slight modification (0–2%) of the bond distances using the RMULTIPLIER card was allowed to optimize...
The solid-state structure of 2b, established by an X-ray analysis, is that of the Td-like isomer, although the low-temperature 31P-{1H} NMR spectrum showed the presence of both C3v- and Td-like isomers in solution. Compound 2a underwent facile conversion to [Ir4(CO)10(-η2-L1)]4...
The FTIR spectrum of the NS-CDs is shown in Fig. 2. The peak at 3332.2 cm−1 was attributed to the O–H bond stretching vibrations, while the intense signals at 2855.8 and 2923.13 cm−1 indicate the presence of –CH2–groups, which in turn confirms the chain structure of the NS-...