Reactions of Ar(+) with halocarbons and Of i(+) with Cf{sub 3}I. (Reannouncement with new availability information)

Technical Report · Wed Jul 01 04:00:00 EDT 1992

OSTI ID:177465

Morris, R A; Van Doren, J M; Viggiano, A A; Paulson, J F

The gas phase reactions of Ar(+) with the halocarbons CF{sub 3} Cl, CF{sub 3} Br, CF{sub 3} I, CF{sub 4}, C{sub 2} F{sub 6}, and C{sub 2} F{sub 4} have been studied using the PL variable temperature-selected ion flow tube (VT-SIFT) instrument operated at 298 and 500 K. Rate constants and product branching percentages were measured at both temperatures. Ar(+) reacts at the collisional rate with all of the above neutrals at both 298 and 500 K. The reactions with CF{sub 3} X yield CF{sub 3} (+), and CF{sub 2} X(+) for all X (the reaction with CF{sub 4} produces only CF{sub 3} (+)). For X = I, there is an additional channel leading to the ionic product I(+). The reaction of Ar(+) with C{sub 2} F{sub 6} produces both CF{sub 3} (+) and C{sub 2} F{sub 5} (+). The reaction of Ar(+) with C{sub 2} F{sub 4} forms a rich product spectrum consisting of the ions CF(+), CF{sub 2} (+), CF{sub 3} (+), and C{sub 2} F{sub 4} (+). The reaction of I(+) with CF{sub 3} I, which is a secondary reaction in the Ar(+)/CF{sub 3} I system, was investigated at 298 K in separate experiments. This reaction is rapid and forms four product ions: CF{sub 3} (+), CF{sub 2} I (+), and I{sub 2} (+).

• Research Organization: Phillips Lab., Hanscom AFB, MA (United States)
• OSTI ID: 177465
• Report Number(s): AD-A--254528/3/XAB; PL-TR--92-2192
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
ARGON IONS
BROMINE COMPOUNDS
CHEMICAL REACTIONS
CHLORINE COMPOUNDS
FLUORINE COMPOUNDS
IODINE COMPOUNDS
KINETICS
ORGANIC HALOGEN COMPOUNDS
TEMPERATURE RANGE 0273-0400 K
TEMPERATURE RANGE 0400-1000 K