The First Second-row Triketone Complex Structure: Synthesis and Properties of a Substituted (1,3,5-pentanetrionato) (μ-oxo)bis(dioxomolybdenum(VI))
Reaction of the β-triketone ligand 1,5-diphenyl-1,3,5-pentanetrione with molybdenum(VI) produces the first such derivatives with a second-row transition-metal element. The products are oxygen-bridged binuclear complexes, with structural resemblance to olefin epoxidation catalysts. When synthesized from ethanol solution, the product contains one molecule of ethanol per molecule of binuclear complex and is highly insoluble, suggesting a polymeric structure. When recrystallized from dimethyl sulfoxide, the product is a crystalline (1,3,5-pentanetrionato)(μ-oxo)bis((dimethyl sulfoxide)dioxomolybdenum(VI)) complex, shown by X-ray crystallography to have a coordinated DMSO on each molybdenum to make up a six-coordinated environment: Crystal data for (MoO2)2(C17H12O 3)(O)(DMSO)2: space group P21/n with Z = 4, a = 8.093 (3) Å, b = 22.724 (6) Å, c = 14.087 (6) Å, β = 90.21 (3)°; the structure was refined to an R(Fo2) value of 4.9% for 2240 reflections. © 1990 American Chemical Society.
L. L. Borer and E. Sinn, "The First Second-row Triketone Complex Structure: Synthesis and Properties of a Substituted (1,3,5-pentanetrionato) (μ-oxo)bis(dioxomolybdenum(VI))," Inorganic Chemistry, American Chemical Society (ACS), Jan 1990.
The definitive version is available at http://dx.doi.org/10.1021/ic00338a025
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© 1990 American Chemical Society (ACS), All rights reserved.