Transient Detection in Infrared Multiphoton Decomposition of (Chloromethyl)silane and 1,3-Disilacyclobutane: Evidence for Cleavage of SiCH4 Intermediates

0166539 - UCHP-M 20020228 RIV CH eng J - Journal Article
Santos, M. - Diaz, L. - Pola, Josef
Transient Detection in Infrared Multiphoton Decomposition of (Chloromethyl)silane and 1,3-Disilacyclobutane: Evidence for Cleavage of SiCH4 Intermediates.
Journal of Photochemistry and Photobiology A-Chemistry. Roč. 152, 1-3 (2002), s. 17-24. ISSN 1010-6030. E-ISSN 1873-2666
R&D Projects: GA MŠMT OC 523.60
Keywords : infrared multiphoton dissociation * laser-induced fluorescence * decomposition mechanisms
Subject RIV: CH - Nuclear ; Quantum Chemistry
Impact factor: 1.297, year: 2002

The transients produced in the infrared multiphoton decomposition (IRMPD) of (chloromethyl)silane HClSi:, H2Si: and H2C: and of 1,3-disilacyclobutane H2Si: and H2C: have been identified by laser-induced fluorescence (LIF). The nascent HClSi: and H2Si: populations are generated with a high degree of excitation and the species produced from (chloromethyl)silane possess more rotational and vibrational energy than those produced from 1,3-disilacyclobutane. The obtained quenching rate and radiative lifetime for HClSi: are (4.6 0.3) 10-10?cm3 per molecule's-1 and 369 10 ns, respectively. The formation of H2Si: and H2C: in IRMPD of both (chloromethyl)silane and 1,3-disilacyclobutane adds to previous knowledge on decomposition of (chloromethyl)silane and 1,3-disilacyclobutane and suggests that these transients are produced from the same SiCH4 (H3Si(H)C: and (CH3)HSi:) intermediates.
Permanent Link: http://hdl.handle.net/11104/0001379