Chemiluminescent reactions of the IVA elements: dihalide formation

Earlier work on chemiluminescent beam-gas reactions of Si, Ge, and Sn with F2 [W. J. Rosano and J. M. Parson, J. Chem. Phys. 79, 2696 (1983)] is extended to reactions with Br2, I2, ClF3, SF4, and SF6. In all of these new systems electronic emission is attributable exclusively to IVA dihalide product...

Full description

Saved in:
Bibliographic Details
Published in:The Journal of chemical physics 1986-06, Vol.84 (11), p.6250-6260
Main Authors: ROSANO, W. J, PARSON, J. M
Format: Article
Language:English
Subjects:
Atomic and molecular collision processes and interactions
Atomic and molecular physics
Exact sciences and technology
Physics
Scattering of atoms, molecules and ions
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Earlier work on chemiluminescent beam-gas reactions of Si, Ge, and Sn with F2 [W. J. Rosano and J. M. Parson, J. Chem. Phys. 79, 2696 (1983)] is extended to reactions with Br2, I2, ClF3, SF4, and SF6. In all of these new systems electronic emission is attributable exclusively to IVA dihalide products. Reaction of Sn with the diatomics most likely procedes by a two-step mechanism involving a highly vibrationally excited Sn monohalide intermediate. The polyatomic reactants, on the other hand, yield IVA difluoride products in a single collision. Radiation of the dihalides from the 3B1 state to the ground 1A1 state is consistent with the thermochemistry of these mechanisms. The dependence of the emission on the IVA atom velocity shows that energy barriers to reaction are small or nonexistent.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.450769