2-Methyl-8-quinolinol, reaction with

VO(oxine)2] (138) and [VO(oxine)2py]-C6H6 (140), prepared by a ligand displacement reaction (equation 61), had v(V==0) = 963 and 945 cm and pcS = 1.75 and 1.64 BM, respectively. When 8-quinolinol is replaced by 2-methyl-8-quinolinol in reaction (61), [VO(2-Me-oxine)2] is obtained, with v(V=0) = 970 cm-1. Complexes (138) and (140) react readily with 02 and a diamagnetic dinuclear pi-oxo Vv species [(oxine)2—OV—O—VO(oxine)2] is produced.826 Nitrobenzene and 2-nitrosobiphenyl also react in a similar manner in THF giving the same complex. With p-benzoquinone a dinuclear diamagnetic Vv complex [(oxine)2OVOC6H4OVO(oxine)2] is obtained. 

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