The chemistry of some 8-hydroxyquinoline complexes of vanadium

Electrochemical studies of vanadium(III), -(IV), and -(V) complexes of 8-quinolinol in acetonitrile. Formation of a binuclear mixed-valence (IV,V) complex

“…Oxomethoxybis(8-quinolinolato)vanadium(V). VO(OCH3)Q2 was prepared by the method of Blair et al 21 and Nakamoto et al 22 The procedure was modified only in that fresh absolute methanol was added for the second and third refluxes in order to shift the reaction completely to the methoxy product. of the vanadium(V) complex, the vanadium(IV) complex, and base in absolute methanol (in the drybox).…”

NMR, DFT and luminescence studies of the complexation of V(v) oxoions in solution with 8-hydroxyquinoline-5-sulfonate

“…Although the complexation of V(V) with 8-HQ and its derivatives, such as 8-HQS, has been studied, our knowledge of these systems is far from complete. 11,[22][23][24][25][26][27][28][29][30][31][32] In particular, there is limited information on both their structure in solution and their photophysical behavior. For sensing, OLEDS, environmental and biomedical applications, structural and spectral characterisation of the oxocomplexes formed between V(V) and 8-HQS is of major importance.…”

Spectrophotometric Determination of Vanadium(V) with 6-Hydroxy-1,7-Phenanthroline.

“…Because 6 -hydroxy -1,7 -phenanthroline is closely related chemically to 8-quinolinol, prior references to the latter complexant seem relevant (1)(2)(3)(4)(7)(8)(9)(10). Vanadium (V) forms a waterinsoluble chelate with 8-quinolinol (7) which, depending upon the method of preparation, may be dark purple, dark green, or yellow.…”