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A Blue Homoleptic Bismuth–Nitrogen Cation


  • Financial support by the Deutsche Forschungsgemeinschaft (SCHU 1170/4-1) is gratefully acknowledged.


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Bi and N form a W: An acyclic Bi–N cation (synthesized as its GaCl4 salt) was prepared from lithium N,N′,N′-tris(trimethylsilyl)hydrazide and BiCl3 by chloride abstraction. The W-shaped NNBiNN structure and the bonding of this deep blue cation, which can be regarded a bismapentazenium cation, is discussed on the basis of experimental and theoretical data.