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- W2110167312 abstract "The chlorination of singly and multiply charged C60 cations has been investigated using the selected-ion flow tube (SIFT) technique with chlorinated ethylenes as possible chlorinating agents. Observations are reported for the reactions of C60·+, C602+, and C60·3+ with CH2CHCl, CH2CCl2, trans-CHClCHCl, cis-CHClCHCl, CHClCCl2 and CCl2CCl2 at room temperature (295 ± 2 K) in helium at a total pressure of 0.35 ± 0.02 Torr. The results generally are consistent with previous studies of the reactivities of these three ionized states of C60 under SIFT conditions. C60·+ was observed not to react in any way and C60·3+ reacted exclusively by rapid electron transfer, k > 1.0 × 10−9 cm3 molecule−1 s−1. C602+ was observed to be less reactive with values of k in the range from 1.5 × 10−12 to 1.6 × 10−10 cm3 molecule−1 s−1 and exhibited three different types of reaction channels: electron transfer, adduct formation, and (Cl)2 transfer. The latter channel was the only chlorination channel observed and occurred exclusively with the cis and trans isomers of 1,2-dichloroethylene, but in competition with adduct formation. The variation observed in the occurrence of these three channels with charge state is consistent with what is now known about the role of charge state in promoting bond formation with the C60 surface and the role of coulombic repulsion between product ions in preventing electron transfer. A bimolecular reaction of the C60 (trans-HClCCHCl)2+ adduct ion with trans-1,2-dichloroethylene was observed leading to the elimination of acetylene or chlorine. Higher-order sequential additions to C602+ were seen with vinyl chloride, 1,1-dichloroethylene, and trichloroethylene and these are proposed to proceed by “ball-and-chain” polymerization." @default.
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- W2110167312 date "1999-09-01" @default.
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- W2110167312 title "Selected-ion flow tube studies of reactions of C60n+ (n = 1, 2, 3) with chlorinated ethylenes" @default.
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- W2110167312 doi "https://doi.org/10.1016/s1387-3806(99)00107-4" @default.
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