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Studies on Transition-Metal Oxo and Nitrido Complexes. Part 11. New Oxo Complexes of Ruthenium as Aerobically assisted Oxidants, and the X-Ray Crystal Structure of *3.5H2O

DOI: 10.1039/DT9900000737

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 737 - 742 (1990)

Update date:2022-08-11

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Authors:

Dengel, Andrew C.Dengel, Andrew C.

El-Hendawy, Ahmed M.El-Hendawy, Ahmed M.

Griffith, William P.Griffith, William P.

O'Mahoney, Caroline A.O'Mahoney, Caroline A.

Williams, David J.Williams, David J.

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Article abstract of DOI:10.1039/DT9900000737

The new complexes t-py), nicotinic acid (Hnic), isonicotinamide (isna), pyridine-2-carboxylic acid (Hpyca), or1/2(2,2'-bipyridyl) (bipy)> have been prepared and the X-ray crystal structure of another member of the series, *3.5H2O, determined , a = 7.943(1), b = 8.952(2), c = 9.257(3) Angstroem, α = 98.76(2), β = 95.75(2), γ = 98.08(1) deg, Z = 1, R = 0.065>.New complexes are also reported of the types trans-2+ , trans- (L = 4But-py or 4-chloropyridine), trans- and trans-- (L = py, 4But-py, 3-methylpyridine, or 3,4-dimethylpyridine).Vibrational spectra, structures and reactions of these species are discussed: they function as overall four-electron oxidants (eight-electron in the case of , converting primary alcohols into aldehydes and secondary alcohols into ketones, and function catalytically with N-methylmorpholine N-oxide or iodosylbenzene as co-oxidant.The most soluble of them, trans-*3.5H2O, trans-t-py)4>, trans-2+, and trans-t-py)>-, will also effect such oxidation of alcohols with dioxygen as co-oxidant.

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