A novel framework of N-H center dot center dot center dot Br hydrogen bonds forming Br(4,4 '-bipyridinium)(4) supramolecular synthons: bis(4,4 '-bipyridinium)tris[tetrabromidoferrate(III)] bromide

作者：Ali Basem Fares^*; Al Far Rawhi

来源：Acta Crystallographica Section C-Crystal Structure Communications, 2007, 63: M451-M453.

DOI：10.1107/S0108270107039856

In the asymmetric unit of the title compound, ( C10H10N2)(2)[ FeBr4](3)Br, the Fe atoms are in a distorted tetrahedral environment. The crystal structure contains a novel arrangement of Br( 4,4'- bipyridinium)(4) supramolecular synthons assembled via short N - H center dot center dot center dot Br hydrogen bonds ( H center dot center dot center dot Br = 2.55, 2.40, 2.38 and 2.55 angstrom), where four cations surround one nonbonded bromide ion in a tetrahedral arrangement. These synthons are further connected by hydrogen bonds using the remaining terminal NH hydrogens in each cation and the Br. ions to form an adamantoid- like network and thus produce a three- dimensional supramolecular architecture with the [ FeBr4]. ions located in the cavities. The structure shows no signi cant intermolecular Br center dot center dot center dot Br, Br center dot center dot center dot aryl or aryl - aryl interactions.

• 出版日期2007-10