IR Spectra of <i>n</i>-Bu<sub>4</sub>M (M = Si, Ge, Sn, Pb), <i>n</i>-BuAuPPh<sub>3</sub>-<i>d</i><sub>15</sub>, and “<i>n</i>-Bu” on a Gold Surface
作者:Jiří Kaleta、Lucie Bednárová、Martina Čížková、Jin Wen、Eva Kaletová、Josef Michl
DOI:10.1021/acs.jpca.7b03404
日期:2017.6.22
and DFT-calculated IR spectra of n-Bu4M (M = Si, Ge, Sn, Pb), (CH3CH2CH213CD2)4Sn, and n-BuAuPPh3-d15 are reported and assigned. The asymmetric CH stretching vibration of the CH2 group adjacent to the metal atom appears as a distinct shoulder at ∼2934 cm–1, whereas for other CH2 groups it is located at ∼2922 cm–1. The characteristic peak at ∼2899 cm–1 is attributed to an overtone of a symmetric CH2 bend
报告了n -Bu 4 M(M = Si,Ge,Sn,Pb),(CH 3 CH 2 CH 2 13 CD 2)4 Sn和n -BuAuPPh 3 - d 15的观察值和DFT计算的IR谱,并且已分配。与金属原子相邻的CH 2基团的不对称CH拉伸振动在〜2934 cm –1处表现为明显的肩峰,而对于其他CH 2基团,其位于〜2922 cm –1处。在〜2899 cm –1处的特征峰归因于对称CH 2的泛音在〜1445 cm –1处弯曲。在n -BuAuPPh 3 - d 15中,丁基的CH拉伸振动向较低的频率偏移约10 cm –1,并提供了两种可能的合理化方法。