Acta Cryst. (2007). E63, m1701  [ doi:10.1107/S1600536807023070 ]

Dimethylpyrazinium tetrabromidoferrate(II): BrarylBr and BrBr intermolecular interactions

R. Al-Far and B. F. Ali

Abstract: In the title compound, (C₆H₁₀N₂)[FeBr₄], the asymmetric unit contains one half-cation and one half-anion, where the Fe atom has a distorted tetrahedral environment. The Fe atom and two Br atoms lie on a mirror plane; the cation is centrosymmetric. In the crystal structure, the cations and anions are packed into alternate stacking with no significant intermolecular BrBr and/or arylaryl interactions within each stack. The anionanion stacks interact via BrBr interactions [BrBr = 3.8773 (15) Å] to form one-dimensional arrays. The Braryl interactions are arranged in a BrarylBraryl infinite motif [Brcentroid distance of 3.928 (1) Å]. All of them link the anions and cations into two-dimensional layers.

Online 26 May 2007

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