Diaqua-mu(3)-oxido-hexakis(mu(2)-trichloro-acetato-kappa O-2 : O ')(trichloroacetato-kappa O)-trichromium(III) acetonitrile trisolvate

• Main Authors: Soume, B.B.M.D., Yahya, Rosiyah, Gan, S.N., Ng, S.W.
• Format: Article
• Language: English
• Published: International Union of Crystallography 2008
• Subjects: QD Chemistry
• Online Access: http://eprints.um.edu.my/6671/1/Diaqua-mu%283%29-oxido-hexakis%28mu%282%29-trichloro-acetato-kappa_O-2__O_%27%29%28trichloroacetato-kappa_O%29-trichromium%28III%29_acetonitrile_trisolvate.pdf; http://eprints.um.edu.my/6671/

In the crystal structure of the title compound, Cr3(C2Cl3O2)7O(H2O)2 ·3CH3CN, the trinuclear Cr3O(H2O)2(Cl3CCO2)7 mol-ecule has an oxide O atom that is connected to one monodentate trichloro-acetate-coordinated and two water-coordinated Cr III atoms, the three metal atoms forming the points of an equilateral triangle. Each of the six remaining carboxyl-ate groups bridges a Cr-O-Cr fragment. The cluster inter-acts with the three solvent mol-ecules through water-acetonitrile O - H�N hydrogen bonds. Adjacent clusters are linked by a water-carboxylate O - H�O hydrogen bond to give a helical chain. One of the CCl3 groups was found to be disordered over two positions, with the major component having a site-occupancy factor of 0.64 (1).