Piperazinium,Ethylenediammonium or 4,4′‐Bipyridinium Halocuprates(I) by CuII/Cu0 Comproportionation |
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| Authors: | Engelbert Redel Michael Fiederle Christoph Janiak Prof Dr |
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| Institution: | 1. Institut für Anorganische und Analytische Chemie, Universit?t Freiburg, Albertstr. 21, 79104 Freiburg, Germany;2. Freiburger Materialforschungszentrum (FMF), Universit?t Freiburg, Stefan‐Meier‐Str. 21, 79104 Freiburg, Germany |
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| Abstract: | 1‐Dimensional halocuprate(I) chains (Cu2X4)2–]n (= (CuX2)–]n, X = Cl, Br, I) have been synthesized under hydrothermal conditions through in‐situ reduction of CuIIX2 with FeIIX2 or as phase pure materials through comproportionation of CuIIX2 or CuIIO with Cu0 metal in the presence of the respective aqueous hydrogen halide HX and a templating amine. Chains of trans edge‐sharing tetrahedra are obtained with piperazinium or ethylenediammonium dications, while the 4,4′‐bipyridinium dication gave chains of cis edge‐sharing tetrahedra. Two monoprotonated piperazinium groups act as cationic ligands (Hpipz+) towards copper atoms in a molecular Cu4(μ‐Br6)(Hpipz)2] cluster. Electrical crystal conductivities of the halocuprate (Cu2X4)2–]n (= (CuX2)–]n) chains (X = Cl, Br, I) are around 10–8 S · cm–1 at room temperature. |
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| Keywords: | Copper Halogens Hydrogen bonds Solid‐state structures Conducting materials |
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