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Bis(1-methyl-piperazine-1,4-diium) di-μ-bromido-bis-[tetra-bromido-bismuthate(III)] dihydrate
Manel Essid1, Thierry Roisnel2, Houda Marouani1
1Laboratoire de Chimie des Matériaux, Faculté des Sciences de Bizerte, 7021 Zarzouna Bizerte, Tunisia.
Abstract:
In the title hydrated salt, (C5H14N2)2[Bi2Br10]·2H2O, the com-plete [Bi2Br10](4-) biocta-hedron is generated by crystallographic inversion symmetry. The diprotonated piperazine ring adopts a chair conformation, with the methyl group occupying an equatorial position. In the crystal, the tetra-anions and water mol-ecules are linked by O-H⋯Br and O-H⋯(Br,Br) hydrogen bonds to generate [100] chains. The chains are crosslinked by N-H⋯Br, N-H⋯O and C-H⋯Br hydrogen bonds originating from the piperazinediium dications, thereby forming a three-dimensional network.
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