Oxygen abstraction reactions

Oxygen abstraction reactions from alcohols, ketones, acyl halides and other oxygen-containing compounds by MCI or related derivatives also afforded a route to relatively simple complexes of the oxo halides (Table 24). Thus Nb2Cli0 was found to abstract oxygen from higher ketones to yield, after hydrolysis, alkanes, chloroalkanes or arylalkanes.414... 

Although the multiplicity of excited states of heteroaromatic N-oxides is disputed, it is established that for pyridazine N-oxides the triplet state is involved in oxygen abstraction reactions, whereas the singlet state is involved in rearrangements and isomerizations. ... 

VC14 and M0CI5 undergo similar oxygen abstraction reactions. 

The sulfur abstraction reactions in the chemistry of are noteworthy for two reasons. First, the corresponding oxygen abstraction reactions in 2 do not occur. Of perhaps greater interest however is the fact tTTat all of the ions which abstract sulfur contain more than one Cr atom. The ions which contain only one Cr atom do not abstract sulfur, but react in other ways. One explanation for this behavior would be that the reactant ions contain metal-metal bonds and that the abstracted sulfur is a "bridging" sulfur in the product ion. Compounds with metal-metal bonds and sulfur bridges are... 

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