6533b7dcfe1ef96bd127226f

RESEARCH PRODUCT

A linear Fe-O-Fe unit in bis(dibenzyldimethylammonium)-oxo-di[tribromoferrate(III)]

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description

The title compound, (C16H20N)2[Fe2Br6O], crystallizes with one dibenzyl­dimethylammonium cation and one half of a [mu]-oxo-bis­[tribromo­ferrate(III)] anion in the asymmetric unit. The bridging oxo group is situated on an inversion centre, resulting in a linear conformation for the Fe-O-Fe unit. The iron(III) cations have tetra­hedral geometry, with bond angles in the range 106.8 (1)-112.2 (1)°. The ion pairs are held together by Coulombic forces and C-H...Br hydrogen bonds. Each Br- anion forms one hydrogen bond. No C-H...O hydrogen bonds are found between the O atom in the Fe-O-Fe unit and surrounding counter-cations, consistent with the linear configuration of the Fe-O-Fe unit. peerReviewed