Electron-Induced Reactions of MeCpPtMe3 Investigated by HREELS
Electron-Induced Reactions of MeCpPtMe3 Investigated by HREELS
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DOI：
10.1021/jp810834r
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发表时间：
2009-07-30
影响因子：
3.7
通讯作者：
Swiderek, P.
中科院分区：
文献类型：
--
作者：
Hedhili, M. N.;Bredehoeft, J. H.;Swiderek, P.
Trimethyl(methylcyclopentadienyl)-platinum(IV)多层凝聚膜(MeCpPtMe3)在15、30和500 eV的入射电子能量下暴露于低能电子。用高分辨电子能量损失谱(HREEL)研究了在曝光条件下发生的反应。对于三种不同的能量，观察到的HREEL光谱在辐照后的变化是相似的。与先前使用反射吸收红外光谱(RATRS)在500 eV的电子辐照获得的结果相反，并且指向完全失去氢的情况下，在本实验中，可比的电子暴露产生的产物仍然包含大量的C-H键。与在较低电子能量下接触电子后的热脱附谱的结果一致，得到了在室温下不会蒸发的材料。粗略的估计表明，总体反应速度与之前的结果一致。
Multilayer condensed films of trimethyl(methylcyclopentadienyl)-platinum(IV) (MeCpPtMe3) have been exposed to low-energy electrons at incident electron energies of 15, 30, and 500 eV. The reactions occurring under exposure have been investigated using high-resolution electron energy loss (HREEL) spectroscopy. The observed changes in the HREEL spectra upon exposure are similar for the three different energies. Contrary to previous results obtained for electron irradiation at 500 eV using reflection absorption infrared spectroscopy (RATRS) and pointing toward a complete loss of hydrogen a comparable electron exposure in the present experiment yields a product that still contains a significant amount of C-H bonds. In accord with results from thermal desorption spectrometry also obtained after exposure to electrons at lower electron energy, a material is obtained that does not evaporate at room temperature. A crude estimate suggests that the overall reaction rate is consistent with previous results.