PARTIAL CONTROL OF AN ION-MOLECULE REACTION BY SELECTION OF THE INTERNAL MOTION OF THE POLYATOMIC REAGENT ION

被引：58

作者：

GUETTLER, RD ^{[1
]}

JONES, GC ^{[1
]}

POSEY, LA ^{[1
]}

ZARE, RN ^{[1
]}

机构：

[1] STANFORD UNIV,DEPT CHEM,STANFORD,CA 94305

来源：

SCIENCE | 1994年 / 266卷 / 5183期

关键词：

D O I：

10.1126/science.266.5183.259

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The ion-molecule reaction NH3+ + ND3 has been studied at various collision energies (1 to 5 electron volts in the center of mass) with preparation of the NH3+ reagent in two nearly isoenergetic vibrational states. One state corresponds to pure out-of-plane bending of the planar NH3+ ion (0.60 electron volts), whereas the other state is a combination of in-plane and out-of-plane motion (0.63 electron volts). The product branching ratios differ markedly for these two vibrational-state preparations. The differences in reactivity suggest that the in-plane totally symmetric stretching mode is essentially inactive in controlling the branching ratio of this reaction.

引用

页码：259 / 261

页数：3

共 30 条

[1]

Ashfold M. N. R., 1987, Comments on Atomic and Molecular Physics, V19, P181

[2] CROSS-SECTIONS FOR SYMMETRIC CHARGE-TRANSFER AND PROTON-TRANSFER REACTIONS OF INTERNAL ENERGY SELECTED NH3+(V) [J].