Rate constants for the reactions of molecular iodine with Cl, SiCl3, and SiH3 at 298 K

Abstract

The angular and velocity distribution of the ICl product from reaction (1) at 4.5 kcal/mol collision energy has been obtained by Cross and Blais in a crossed-molecular-beam study [1]. It was concluded that the angular distribution is consistent with that arising from short range attractive forces and that the reaction time is less than one rotational period. Reactions (2,3) present some special interest because chloro-silanes are used in technological processes of microelectronics. EXPERIMENTALReactions (1 -3) were studied by pulsed laser photolysis followed by a time-resolved detection of inter- INTRODUCTIONIn the present article we report the results of kinetics studies of reaction (1 -3) at room temperature:To our knowledge the rate constants for these reactions are not available from the literature. Kinetics and Combustion, 630090 Novosibirsk, Russia Received 26 January 1996; accepted 22 May 1996 ABSTRACT: Rate constants k 1 , k 2 , and k 3 have been measured at 298 K by means of a laser photolysis-laser magnetic resonance technique and (or) by a laser photolysis-infrared chemiluminescence detection technique (LMR and IRCL, respectively).

Spectroscopic and Kinetic Studies of the ClSO Radical from Cl2SO Photolysis

“…To test this hypothesis, first, we added iodine (I 2 ) as a Cl atom scavenger ( k I2+Cl = 2.5 × 10 –10 cm 3 molecule –1 s –1 ) Figure B shows that the lifetime of Cl 2 SO depletion and the structured absorption was extended in the presence of I 2 , that is, in the absence of the Cl atoms.…”

Time-resolved IR chemiluminescence in gas-phase chemical kinetics

“…This method was used 57,58 for measuring the rate constants for a number of reactions of the chlorine atom with siliconcontaining radicals. The results of these studies and the available published data obtained by other methods are listed in Table 3.…”