Tetraethylammonium bromidotricarbonyl(tropolonato)rhenate(I)

In the title salt, (C8H20N)[ReBr(C7H5O2)(CO)3], the ReI atom is octahedrally surrounded by three facially orientated carbonyl ligands, one bidendate tropolonate ligand and a bromide ligand. The small O—Re—O bite angle of 74.88 (12)° leads to a distortion of the octahedral coordination sphere. The bromide ligand and the axial carbonyl ligand are substitutionally disordered over two positions in a 0.922 (3):0.078 (3) ratio. An array of C—H...O and C—H...Br hydrogen-bonding interactions between the cations and neighbouring rhenate anions stabilizes the crystal packing.

Abstract licence: CC BY

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