Salts of HCN‐Cyanide Aggregates: [CN(HCN)2]− and [CN(HCN)3]− |
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| Authors: | Kevin Bl sing,J rg Harloff,Axel Schulz,Alrik Stoffers,Philip Stoer,Alexander Villinger |
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| Affiliation: | Kevin Bläsing,Jörg Harloff,Axel Schulz,Alrik Stoffers,Philip Stoer,Alexander Villinger |
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| Abstract: | Although pure hydrogen cyanide can spontaneously polymerize or even explode, when initiated by small amounts of bases (e.g. CN?), the reaction of liquid HCN with [WCC]CN (WCC=weakly coordinating cation=Ph4P, Ph3PNPPh3=PNP) was investigated. Depending on the cation, it was possible to extract salts containing the formal dihydrogen tricyanide [CN(HCN)2]? and trihydrogen tetracyanide ions [CN(HCN)3]? from liquid HCN when a fast crystallization was carried out at low temperatures. X‐ray structure elucidation revealed hydrogen‐bridged linear [CN(HCN)2]? and Y‐shaped [CN(HCN)3]? molecular ions in the crystal. Both anions can be considered members of highly labile cyanide‐HCN solvates of the type [CN(HCN)n]? (n=1, 2, 3 …) as well as formal polypseudohalide ions. |
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| Keywords: | hydrogen bonding hydrogen cyanide solvates structure elucidation |
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