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Crystals 2012, 2(4), 1434-1440; doi:10.3390/cryst2041434

(C5H12N)Cu2Br3: A Piperidinium Copper(I) Bromide with [Cu2Br3] Ladders

1, 1
1 Department of Chemistry and Biochemistry, Universität Bern, Freiestrasse 3, CH-3012 Bern, Switzerland 2 Institute of Microtechnology, CSEM, Rue Jaquet-Droz 1, CH-2002 Neuchâtel, Switzerland
* Author to whom correspondence should be addressed.
Received: 10 August 2012 / Revised: 3 September 2012 / Accepted: 18 September 2012 / Published: 16 October 2012
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Piperidinium copper(I) bromide, (C5H12N)Cu2Br3, was obtained from a solution of CuBr2, piperidine, and HBr in ethanol. At 60 °C ethanol slowly reduces copper(II) to copper(I). Colorless plates of (C5H12N)Cu2Br3 crystallize in the triclinic space group P-1 with lattice parameters of a = 6.2948(10) Å, b = 8.2624(14) Å, c = 10.7612(17) Å, α = 75.964(19)°, β = 89.232(19)°, γ = 84.072(19)°, and Z = 2 at 173 K. [CuBr4] tetrahedra share edges and form [Cu2Br3] ladders parallel to the a-axis. (C5H12N)+ ions adopt a chair conformation and connect the [Cu2Br3] ladders via H-bonding. The (C5H12N)Cu2Br3 structure is related to the mineral rasvumite, KFe2S3, space group Cmcm, which is isostructural to several alkali copper(I) halides.
Keywords: halides; copper; bromine; solid state structure; X-ray diffraction halides; copper; bromine; solid state structure; X-ray diffraction
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Komm, T.; Biner, D.; Neels, A.; Krämer, K.W. (C5H12N)Cu2Br3: A Piperidinium Copper(I) Bromide with [Cu2Br3] Ladders. Crystals 2012, 2, 1434-1440.

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