Diaqua-μ3-oxido-hexa­kis(μ2-trichloro­acetato-κ2 O:O′)(trichloro­acetato-κO)trichromium(III) acetonitrile tris­olvate

• Main Authors: Soume, B.B. Mougang D., Yahya, Rosiyah, Gan, Seng Neon, Ng, Seik Weng
• Format: Article
• Language: English
• Published: International Union of Crystallography 2008
• Subjects: QD Chemistry
• Online Access: http://eprints.um.edu.my/744/1/1.pdf; http://eprints.um.edu.my/744/; https://doi.org/10.1107/S1600536808025798

In the crystal structure of the title compound, [Cr3(C2Cl3O2)7O(H2O)2]·3CH3CN, the trinuclear [Cr3O(H2O)2(Cl3CCO2)7] mol­ecule has an oxide O atom that is connected to one monodentate trichloro­acetate-coordinated and two water-coordinated CrIII atoms, the three metal atoms forming the points of an equilateral triangle. Each of the six remaining carboxyl­ate groups bridges a Cr–O–Cr fragment. The cluster inter­acts with the three solvent mol­ecules 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).