Reactions of Group 14 Metal Atoms with Acetylene: A Matrix Isolation Infrared Spectroscopic and Theoretical Study
作者:Yun-Lei Teng、Qiang Xu
DOI:10.1021/jp902041f
日期:2009.11.5
Laser-ablated group 14 metal atoms have been codeposited at 4 K with acetylene in excess argon. Products, Ge(C2H2), HGeCCH, Sn(C2H2), Sn2CCH2, HSnCCH, and HPbCCH, have been formed in the present experiments and characterized using infrared spectroscopy on the basis of the results of the isotopic shifts, mixed isotopic splitting patterns, stepwise annealing, the change of reagent concentration and laser
激光烧蚀的第14组金属原子已在过量氩气中与乙炔共沉积在4 K下。产品,Ge(C 2 H 2),HGeCCH,Sn(C 2 H 2),Sn 2 CCH 2,HSnCCH和HPbCCH已在本实验中形成,并根据同位素位移,混合同位素分裂模式,逐步退火,试剂浓度和激光能量的变化以及与之比较的结果,使用红外光谱法进行了表征。理论预测。已经对这些分子进行了密度泛函理论计算。实验和计算的振动频率,相对吸收强度和同位素位移之间的一致性支持从基质红外光谱识别这些分子。已经提出了合理的反应机理来解释这些分子的形成。