Electronic Spectrum and Photodissociation Chemistry of the 1-Butyn-3-yl Cation, H<sub>3</sub>CCHCCH<sup>+</sup>
作者:Giel Muller、Ugo Jacovella、Katherine J. Catani、Gabriel da Silva、Evan J. Bieske
DOI:10.1021/acs.jpca.9b11810
日期:2020.3.26
The B<--X electronic spectra of the 1-butyn-3-yl cation (H3CHCCCH+) and H3CHCCCH+-Ne and H3CHCCCH+-Ar complexes are measured using resonance enhanced photodissociation over the 245-285 nm range. The two species have origin transitions at 35936 and 35930 cm-1 respectively. Vibronic bands are assigned based on quantum chemical calculations and comparison of the spectra with those of the related linear
1-丁炔-3-基阳离子(H3CHCCCH +)和H3CHCCCH + -Ne和H3CHCCCH + -Ar络合物的B <-X电子光谱是使用共振增强的光解离在245-285 nm范围内测量的。这两个物种的起源转变分别在35936和35930 cm-1处。根据量子化学计算分配振动带,并与相关的线性甲基炔丙基(H3C4H2 +)和炔丙基(H2C3H +)阳离子进行光谱比较。光致碎裂离子为C2H3 +(主要)和C4H3 +(次要),优选C2H3 +与主方程仿真一致,该机理涉及一种在基态势能表面上快速电子失活和解离的机制。