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Differential steric effects in Cl reactions with aligned CHD3(v1 = 1) by the R(0) and Q(1) transitions. II. Abstracting the unexcited D-atoms.
- Source :
- Journal of Chemical Physics; 2016, Vol. 145 Issue 14, p1-8, 8p, 3 Diagrams, 1 Chart, 5 Graphs
- Publication Year :
- 2016
-
Abstract
- A complete set of four polarization-dependent differential cross sections in the reactions of Cl + aligned-CHD<subscript>3</subscript>(v<subscript>1</subscript> = 1, |jK) → DCl(v = 0) + CHD<subscript>2</subscript>(v<subscript>1</subscript> = 1) is reported here for two different, rotationally polarized states with j = 1: specifically the |jK = |10 state prepared via the R(0) excitation and the |1 ± 1 state via Q(1). In stark contrast to the complicated situation of the HCl(v) + CD3(v = 0) channel reported in Paper-I, the stereo-requirement of this isotopic channel for both polarized reactants appears quite straightforward and consistent with a direct rebound mechanism. The extent of steric effects is moderate and relatively smaller than the alternative H-atom abstraction channel. All major findings reported here can qualitatively be understood by first noting that the present reaction invokes abstracting a D-atom, which is the spectator in the IR-excitation process. Next, it is recognized that the directional properties of two polarized states of CHD<subscript>3</subscript>(v<subscript>1</subscript> = 1, |jK) should manifest primarily in the IR-excited C-H bond, leaving secondary imprints in the unexcited CD<subscript>3</subscript>-moiety. The stereo-specificity of the DCl + CHD2 product channel is further reduced by the fact that the abstraction can occur with any one of the three spatially distinct D-atoms. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00219606
- Volume :
- 145
- Issue :
- 14
- Database :
- Complementary Index
- Journal :
- Journal of Chemical Physics
- Publication Type :
- Academic Journal
- Accession number :
- 118853287
- Full Text :
- https://doi.org/10.1063/1.4964653