PHOTODISSOCIATION SPECTROSCOPY OF THE MG+-CO2 COMPLEX AND ITS ISOTOPIC ANALOGS

被引：82

作者：

YEH, CS ^{[1
]}

WILLEY, KF ^{[1
]}

ROBBINS, DL ^{[1
]}

PILGRIM, JS ^{[1
]}

DUNCAN, MA ^{[1
]}

机构：

[1] UNIV GEORGIA,DEPT CHEM,ATHENS,GA 30602

来源：

JOURNAL OF CHEMICAL PHYSICS | 1993年 / 98卷 / 03期

关键词：

D O I：

10.1063/1.464221

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：

Mg+-CO2 ion-molecule cluster complexes are produced by laser vaporization in a pulsed nozzle cluster source. The vibronic spectroscopy in these complexes is studied with mass-selected photodissociation spectroscopy in a reflectron time-of-flight mass spectrometer. Two excited electronic states are observed (2) 2SIGMA+ and 2PI. The 2PI state has a vibrational progression in the metal-CO2 stretching mode (omega(e)' = 381.8 cm-1). The complexes are linear (Mg+-OCO) and are bound by the charge-quadrupole interaction. The dissociation energy (D0'') is 14.7 kcal/mol. Corresponding spectra are measured for each of the 24, 25, and 26 isotopes of magnesium. These results are compared to theoretical predictions made by Bauschlicher and co-workers.

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页码：1867 / 1875

页数：9

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