Reduced-dimensionality quantum calculations of the thermal rate coefficient for the Cl+HCl r arrow ClH+Cl reaction: Comparison with centrifugal-sudden distorted wave, coupled channel hyperspherical, and experimental results

Journal Article · Thu Feb 01 04:00:00 EST 1990 · Journal of Chemical Physics; (USA)

DOI:https://doi.org/10.1063/1.458049· OSTI ID:6950852

Sun, Q; Bowman, J M ^[1]; Schatz, G C ^[2]; Sharp, J R; Connor, J N.L. ^[3]

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1. Chemistry Department, Emory University, Atlanta, Georgia 30322 (USA)
2. Theoretical Chemistry Group, Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439 (USA)
3. Department of Chemistry, University of Manchester, Manchester M13 9PL, (Great Britian)

Reduced dimensionality (RD) cumulative reaction probabilities (CRPs) are reported for the Cl+HCl{r arrow}ClH+Cl reaction using two semiempirical extended London--Eyring--Polanyi--Sato potential energy surfaces. Comparison is made with CRPs from centrifugal-sudden distorted wave (CSDW) calculations, and with accurate coupled channel hyperspherical (CCH) CRPs for total angular momentum quantum number {ital J}=0. Rotational and bending energy-shift approximations are applied to the CCH CRPs for {ital J}=0 to obtain approximate CRPs for {ital J}{gt}0. A test of this approximation is made using CSDW partial wave CRPs. New expressions for the thermal rate coefficient are derived using these approximations. The rate coefficients calculated from RD and energy-shifted CCH CRPs are in excellent agreement with each other. They also agree well with the CSDW and experimental rate coefficients.

• DOE Contract Number: FG05-86ER13568; W-31109-ENG-38
• OSTI ID: 6950852
• Journal Information: Journal of Chemical Physics; (USA), Journal Name: Journal of Chemical Physics; (USA) Vol. 92:3; ISSN JCPSA; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
CHEMICAL REACTION KINETICS
CHLORINE
ELEMENTS
HALOGENS
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
INORGANIC ACIDS
KINETICS
MECHANICS
NONMETALS
PROBABILITY
QUANTUM MECHANICS
REACTION KINETICS