Crystal structure of Hexakis(urea)chromium(III) hexacyanochromate(III) Bis(dimethyl sulfoxide) bis(ethano/)

Abstract

The crystal structure of the title compound, [Cr(OC(NH₂)₂)₆] [Cr(CN)₆].2(CH₃)₂SO.2CH₃CH₂OH, has been determined from a single-crystal X-ray diffraction study at 295(1) K. It was refined by least-squares methods to a residual of 0.039 for 4203 independent 'observed' reflections. Crystals are monoclinic, P2₁/n, a 17.449(6), b 10.315(4), c 11.726(3) Å, β 102.51(2)º, Z 2. Both chromium atoms lie on crystallographic centres of symmetry. Cr-O(urea) are 1.960(2),1.962(2), 1.982(1) Å and Cr-C(cyanide) 2.074(2), 2.080(2), 2.081(2) Å; the geometries of the ligands and solvent molecules are correspondingly precise.