CHARACTERIZATION OF THE REACTIVE AND DISSOCIATIVE BEHAVIOR OF TRANSITION-METAL OXIDE CLUSTER IONS IN THE GAS-PHASE

被引：50

作者：

MALEKNIA, S ^{[1
]}

BRODBELT, J ^{[1
]}

POPE, K ^{[1
]}

机构：

[1] UNIV TEXAS,DEPT CHEM,AUSTIN,TX 78712

来源：

JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY | 1991年 / 2卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/1044-0305(91)80046-A

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

The reactive and dissociative behavior of molybdenum and tungsten oxide cluster ions has been studied in the gas phase using a triple quadrupole mass spectrometer. Cluster ions (MO3)n- were formed via a simple thermal desorption/electron capture negative ionization method, and their structures were characterized by collision-activated dissociation (CAD). Typically, the clusters fragment by losses of neutral (MO3) units. Reactions of the oxide cluster ions with ethylene oxide, cyclohexene oxide, ethylene sulfide, cyclohexene sulfide, 2,3-butanedione, and 2,4-pentanedione were examined, and product ions were characterized by CAD. The clusters react with ethylene oxide by addition of ethylene oxide or net addition of oxygen, whereas the clusters react with ethylene sulfide via net addition of one or two sulfur atoms. Reactions of the clusters with the diones result in addition of one or two dione units, in some cases with dehydration.

引用

页码：212 / 219

页数：8

共 38 条

[1] PHOTODIMERIZATION OF CYCLOHEXENE AND METHANE BY DECATUNGSTATE ANIONS - MOLECULAR-ORBITAL THEORY [J].