Abstract
AbstractThe cyanamides 1 and 3 react with tertiary alkyl chlorides and antimony pentachloride affording formal heterocumulenes SbCl6− (2a, b) and SbCl6− (4a, b). X‐ray analyses of 2b and 4b reveal that in the crystal these compounds are bent pseudocumulenes having structural properties of nitrilium salts (B) and of carbodiimides (D). With amines and alcohols 2 and 4 react to give compounds 11–17 which are probably not amino‐substituted 2‐azaallenium salts E but guanidines F.
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