Product magnetic defection slotted disk velocity analysis molecular beam kinetics: Li+CH/sub 3/NO/sub 2/, CCl/sub 4/, and CH/sub 3/I
Recoil velocity spectra of LiNO/sub 2/, LiCl, and LiI reactively scattered from crossed thermal beams of Li and CH/sub 3/NO/sub 2/, CCl/sub 4/, or CH/sub 3/I have been measured by positioning a combination of an inhomogeneous electromagnet (to deflect aside nonreactively scattered Li atoms) and a slotted disk velocity analyzer between the beam collision zone and surface ionization detector. Transformation of these data into the center-of-mass (CM) coordinate system provides contour maps of the differential reaction cross sections. The CM product angular distributions from the three reactions are quite different: Li+CH/sub 3/I favors backward scattering (i.e., a reversal in Li atom direction during the reaction) although the CM distribution is poorly resolved due to unfavorable kinematics; Li+CCl/sub 4/ favors sideways scattering; and Li+CH/sub 3/NO/sub 2/ favors forward scattering. The product recoil energy distributions are quite similar for all three reactions and indicate potential energy surfaces with substantial repulsion between the products. These results are discussed in relation to previous work on related reactions and interpreted in terms of the electronic structure of ion-pair intermediates. (AIP)
- Research Organization:
- Materials and Molecular Research Division, Lawrence Berkeley Laboratory and Department of Chemistry, University of California, Berkeley, California 94720
- OSTI ID:
- 7338025
- Journal Information:
- J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 65:12; ISSN JCPSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Molecular & Chemical Physics-- Beams & their Reactions
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALKALI METAL COMPOUNDS
ALKALI METALS
ANGULAR DISTRIBUTION
ATOM COLLISIONS
ATOM-MOLECULE COLLISIONS
BEAMS
CARBON TETRACHLORIDE
CHEMICAL REACTIONS
CHLORINATED ALIPHATIC HYDROCARBONS
COLLIDING BEAMS
COLLISIONS
DISTRIBUTION
ELEMENTS
HALIDES
HALOGEN COMPOUNDS
HALOGENATED ALIPHATIC HYDROCARBONS
INORGANIC PHOSPHORS
IODIDES
IODINATED ALIPHATIC HYDROCARBONS
IODINE COMPOUNDS
KINETICS
LITHIUM
LITHIUM COMPOUNDS
LITHIUM HALIDES
LITHIUM IODIDES
LITHIUM NITRIDES
METALS
METHYL IODIDE
MOLECULAR BEAMS
MOLECULE COLLISIONS
NITRIDES
NITROGEN COMPOUNDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC IODINE COMPOUNDS
PHOSPHORS
PNICTIDES
RECOILS
VELOCITY