Kinetic energy release in thermal ion-molecule reactions: Single charge-transfer reactions of V sup 2+ and Ta sup 2+ with benzene
Fourier transform ion cyclotron resonance mass spectrometry (FTICRMS) has been used to study the single charge-transfer reactions of V{sup 2+} and Ta{sup 2+} with benzene under thermal conditions. Thermal charge-transfer rate constants of 2.0 {times} 10{sup {minus}9} and 1.2 {times} 10{sup {minus}9}...
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Published in | Journal of physical chemistry (1952) Vol. 95:21 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
United States
17.10.1991
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Subjects | |
Online Access | Get full text |
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Summary: | Fourier transform ion cyclotron resonance mass spectrometry (FTICRMS) has been used to study the single charge-transfer reactions of V{sup 2+} and Ta{sup 2+} with benzene under thermal conditions. Thermal charge-transfer rate constants of 2.0 {times} 10{sup {minus}9} and 1.2 {times} 10{sup {minus}9} cm{sup 3} molecule{sup {minus}1} s{sup {minus}1} were measured for V{sup 2+} and Ta{sup 2+}, respectively. The total kinetic energy of the product ions was determined to be 1.91 {plus minus} 0.50 eV for the V{sup 2+} case and 2.82 {plus minus} 0.50 eV for the Ta{sup 2+} case. These results and a previous study of the Nb{sup 2+}-benzene single charge-transfer system suggest a simple long-distance electron-transfer mechanism proceeding by ionization of the 1a{sub 2u} orbital of benzene with significant internal excitation of the nascent C{sub 6}H{sub 6}{sup +} product. |
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Bibliography: | FG02-87ER13766 |
ISSN: | 0022-3654 1541-5740 |
DOI: | 10.1021/j100174a048 |