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

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

1, 1
,
2
 and
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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Abstract

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 3.0).

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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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