Crystal Structure of Tris(acetylacetonato)molybdenum(III)

Abstract

The crystal structure of the title compound, [MO(C₅H₇O₂)₃], has been determined at 295(1) K by single-crystal X-ray diffraction methods and refined by least squares to a residual of 0.040 for 2933 'observed' reflections. Crystals are monoclinic, P2₁/n, a 16.515(4), b 13.052(4), c 8.152(2) Å, β 90.74(2)º, Z 4. The structure comprises discrete molecules of the above complex, the molecular point symmetry being a good approximation to D₃, with (Mo-O) 2.07,Å, (intraligand) (O-M-O) 87.7º. The status of the structure is examined with regard to the polymorphism of the symmetrical tris(acetylacetonato)metal(III) complexes, and examined in regard to the anomalous magnetism reported in the preceding paper.