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Conversion Reactions of Solids: From a Surprising Three-Step Mechanism towards Directed Product Formation

Rommel, Stefan Michael ; Krach, Alexander ; Peter, Philipp ; Weihrich, Richard


Directed conversion reactions from binary to multinary compounds are discovered from the reaction of Bi2S3 and Bi2Se3 with NiCl2 center dot 6H(2)O in polyol media under basic conditions. Control of the synthesis conditions allows the preparation of NiBiSe and superconducting Ni3Bi2S2 and Ni3Bi2Se2. The formation of Ni3Bi2S2 from Bi2S3 is found from an unexpected three-step reaction path with Bi ...


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