Crystal structure oftrans-cyclohexane-1,2-diammonium chromate(VI) from synchrotron X-ray diffraction data

Abstract

The structure of the title hybrid compound, (C6H16N2)[CrO4], has been determined from synchrotron data. The organic cation adopts a chair conformation. The inorganic CrO42−anion is slightly distorted owing to its involvement in N—H...O hydrogen-bonding interactions with neighbouringtrans-cyclohexane-1,2-diammonium cations, whereby the two Cr—O bonds to the O atoms acting as acceptor atoms for two hydrogen bonds are slightly longer than the other two Cr—O bonds for which only one acceptor interaction per O atom is observed. In the crystal, cations and anions are packed into layers parallel to (001), held together through the aforementioned N—H...O hydrogen bonds.