Chemiluminescent reactions of group IV A atoms with PCl5 and SnCl4

• Published in: The Journal of chemical physics 1990-12, Vol.93 (11), p.7830-7835
• Main Authors: WANG, J. H, CHEONG, B. S, FANG, C. C, 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
• ISSN: 0021-9606; 1089-7690
• DOI: 10.1063/1.459364

Earlier work on chemiluminescent (CL) reactions of group IV A atoms with halogens has been extended to two chlorine-rich molecules PCl5 and SnCl4. The CL products in these reactions were found to be group IV A dihalides formed in a one step mechanism instead of the two step mechanism proposed in the study of the reactions involving Br2, I2, and ICl. For PCl5, the CL products were found to be group IV A dichlorides, while for SnCl4, the CL products are believed to be SnCl2 for all three atoms. The overall absolute cross sections for the reactions have been estimated, as well as the relative cross sections as functions of collisional energy. The observation of different collisional energy dependence for the reactions of PCl5 and SnCl4, along with other evidence, suggests that two different mechanisms produce the CL products in the two groups of reactions.