Tricarbonyl[N,N′,N″-tris(2,6-diisopropylphenyl) guanidine]molybdenum(0)

Abstract

In the title compound, [Mo(C₃₇H₅₃N₃)(CO)₃], the Mo atom to ring-centroid distance in the η⁶-coordinated tricarbonylmolybdenum group is 1.958 (1) Å. The three C≡O groups are pseudo-octahedrally disposed with C—Mo—C angles ranging from 80.7 (1) to 87.4 (1)°. The two uncoordinated 2,6- diisopropylphenyl-substituted benzene rings form dihedral angles of 75.96 (8) and 78.01 (9)° with the mean plane of the guanidine group. The coordinated benzene ring is in a slight sofa conformation with the N-substituted C atom and the bonded N atom dispaced by 0.090 (3) and 0.458 (4) Å, respectively, from the mean plane of the remaining ring atoms. In the crystal, despite there being two N—H donor groups, no conventional hydrogen bonds are present. This may be because of the steric effects of the bulky diisopropylphenyl groups.