Product magnetic deflection slotted disk velocity analysis molecular beams kinetics: Li+SnCl/sub 4/, PCl/sub 3/, and SF/sub 6/

Journal Article · Wed Dec 01 04:00:00 EST 1976 · J. Chem. Phys.; (United States)

OSTI ID:7245184

Behrens, R Jr; Herm, R R; Sholeen, C M

Recoil velocity spectra of the diamagnetic Li-containing products reactively scattered from crossed thermal beams of Li and SnCl/sub 4/, PCl/sub 3/, or SF/sub 6/ have been measured by positioning a combination of an inhomogeneous deflecting electromagnetic and slotted disk velocity analyzer between the collision zone and detector. Transformation of these data into the center-of-mass coordinate system provides contour maps of the differential reaction cross sections. Although data on Li+SF/sub 6/ are very noisy, they are consistent with a long-lived collision complex and energy equipartitioning in a loose transition state (LTS) mechanism. At some scattering angles, two peaks are observed in the measured product recoil spectra for both Li+SnCl/sub 4/ and Li+PCl/sub 3/. For Li+SnCl/sub 4/, indirect kinematic arguments suggest that this bimodal structure is due to LiSnCl/sub 3/+Cl and LiCl+SnCl/sub 3/ product channels proceeding via an LTS mechanism. For Li+PCl/sub 3/, this bimodal structure is attributed to production of LiCl+PCl/sub 2/ products via an LTS and a direct mechanism. These results are discussed in relation to previous work on these systems and interpreted in terms of the electronic structure of the ion-pair intermediates. (AIP)

• Research Organization: Materials and Molecular Research Division, Lawrence Berkeley Laboratory and Department of Chemistry, University of California, Berkeley, California 94720 and Ames Laboratory-ERDA and Department of Chemistry, Iowa State University, Ames, Iowa 50011
• OSTI ID: 7245184
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 65:11; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ALKALI METALS
ATOM COLLISIONS
ATOM-MOLECULE COLLISIONS
ATOMIC BEAMS
BEAMS
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
COLLIDING BEAMS
COLLISIONS
ELEMENTS
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
LITHIUM
METALS
MOLECULAR BEAMS
MOLECULE COLLISIONS
PHOSPHORUS CHLORIDES
PHOSPHORUS COMPOUNDS
SULFUR COMPOUNDS
SULFUR FLUORIDES
TIME-OF-FLIGHT METHOD
TIN CHLORIDES
TIN COMPOUNDS
TIN HALIDES
VELOCITY