Die Kristallstruktur von Tris(N,N-diethyl-N′-benzoylselenoureato)cobalt(III)

The Crystal Structure of Tris(N,N-diethyl-N′-benzoylselenoureato)cobalt(III) Co(C₁₂H₁₅N₂OSe)₃ crystallizes in the trigonal space group P3 . The cell parameters are a = 16.697(4), c = 8.557(8) Å, Z = 2. The structure was solved with Patterson and direct methods and was refined to a final R-value of 4.59%. Co^III is bidentally coordinated to three N,N-diethyl-N′-benzoylselenourea molecules to form a distorted octahedron with facial arrangement of the selenium and oxygen donor atoms. The Co? Se and Co? O bond lengths are 2.328(2) and 1.943(6) Å, respectively. The arrangement of the molecules within the unit cell leads to the formation of hexagonal channels parallel to the crystallographic c-axis. The wall of the channels is formed by carbon atoms of the phenyl group. The diameter of the channels is 8.148 Å.