Photofragmentation spectroscopy of MgC2H4+

被引：17

作者：

Chen, J ^{[1
]}

Wong, TH ^{[1
]}

Kleiber, PD ^{[1
]}

机构：

[1] UNIV IOWA,OPT SCI & TECHNOL CTR,IOWA CITY,IA 52242

来源：

CHEMICAL PHYSICS LETTERS | 1997年 / 279卷 / 3-4期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0009-2614(97)00994-9

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：

MgC2H4+ has been studied by photodissociation spectroscopy. We identify two distinct molecular absorption bands correlating with Mg+(3p pi-3s sigma) excitation in the spectral range 350-510 nm. The lowest energy band, assigned as 1(2)B(2) <-- 1(2)A(1), is a structureless continuum indicative of a fast predissociation in the upper state. The higher energy band, assigned as 1(2)B(1) <-- 1(2)A(1), exhibits vibrational structure, including a progression in the Mg+-C2H4 intermolecular stretch (nu(2)), and combination bands built on the Mg+-C2H4 intermolecular out-of-plane wag (nu(3)) and a CH2-CH2 wag (nu(7)). The vibrational constants for these modes are omega(2) = 329 cm(-1), x(22) = -2.3 cm(-1), omega(3) = 439 cm(-1), and omega(7) = 1024 cm(-1). (C) 1997 Elsevier Science B.V.

引用

页码：185 / 190

页数：6

共 6 条

[1] Photodissociation spectroscopy of CaCH4+ [J].