Abstract

Linear LiNC is known to be the more stable isomer when isolated in inert gas matrices at low temperatures (4–15K). 1 In an attempt to form the other geometrical isomer, LiCN, studies of the reaction of lithium atoms with CH 3CN and CH 3NC were undertaken. A new absorption in the CN stretching region was observed when lithium atoms were co-condensed with CH 3NC in solid argon and xenon matrices. Photolysis of the matrices with a medium pressure Hg lamp during deposition of Li/CH 3NC seemed to favour the formation of the more stable isomer, LiNC. Reactions of lithium atoms with CH 3CN only led to the formation of LiNC, with or without photolysis.

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