Photodissociation spectroscopy of Mg2CH4+

被引：11

作者：

Cheng, YC ^{[1
]}

Chen, J ^{[1
]}

Kleiber, PD ^{[1
]}

Young, MA ^{[1
]}

机构：

[1] UNIV IOWA,DEPT CHEM,IOWA CITY,IA 52242

来源：

JOURNAL OF CHEMICAL PHYSICS | 1997年 / 107卷 / 10期

关键词：

D O I：

10.1063/1.474733

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have studied the dissociation dynamics of Mg2CH4+ ion-molecule clusters through mass-resolved photodissociation spectroscopy, coupled with translational energy spectroscopy. We have observed distinct molecular absorption bands in the red (690-615 nm) and green (580-545 nm) spectral regions. Mg+ is the dominant fragmentation product in each band, We observe a significant energy release into relative translation and a pronounced photofragment anisotropy (beta >0), consistent with a rapid dissociation. Based on the observed anisotropy and the result of an ab initio structure calculation, we assign the red band to the parallel transition 2(2)A'<--1(2)A' and the green band to a combination of 1 (2)A''<--1 (2)A' and 3 (2)A'<--1 (2)A' transitions, all in C-s, symmetry. These results are compared with earlier results from the photodissociation spectroscopy of the more strongly bound Mg2CO2+ and Mg2H2O+ bimolecular complexes. (C) 1997 American Institute of Physics.

引用

页码：3758 / 3765

页数：8

共 30 条

[21] THE PHOTODISSOCIATION OF METHYL-IODIDE AT 229.4 NM - A DETERMINATION OF THE FRAGMENT RECOIL ANISOTROPY USING ENERGY-SELECTIVE ELECTRON-IMPACT IONIZATION AND TIME-OF-FLIGHT MASS-SPECTROMETRY [J].