Abstract

The crystal and molecular structure of the complex [Co(S2CNC4H8O)3]·CH3CN has been determined by X-ray crystallography. The compound crystallizes in the triclinic system, space group P\overline 1 , with lattice parameters a = 10.561(2), b = 11.114(2), c = 13.011(3) A, α = 103.88(3), β = 101.58(3), γ = 114.91(1)°, and Z = 2. X-ray analysis reveals that the cobalt(III) atom is located at the apparent intersection of D3 symmetry. Despite the apparent presence of the rotational axes, all of the atoms in the structure were found to be unique; there are no symmetry-related atoms. The central cobalt atom is octahedrally coordinated by an arrangement of six S atoms. The octahedron is distorted as a result of the forced configuration of the four-membered chelate ring. The average Co–S distance is 2.273 A. The FT-IR spectra clearly show there are acetonitrile molecules in the crystal lattice.

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