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Acta Cryst. (2008). E64, m1175 [ doi:10.1107/S1600536808025798 ]
![[mu]](/logos/entities/mu_rmgif.gif)
3-oxido-hexakis(2-trichloroacetato-![[kappa]](/logos/entities/kappa_rmgif.gif)
2O:O')(trichloroacetato-O)trichromium(III) acetonitrile trisolvateAbstract: 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-HO 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).
Online 16 August 2008
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