Synthesis, spectroscopic and voltammetric studies of a novel dioxovanadate(V) 8-hydroxyquinoline complex

Semiha Çakir; Ender Biçer; Panče Naumov; Osman Çakir

doi:10.1080/0095897021000058853

Synthesis, spectroscopic and voltammetric studies of a novel dioxovanadate(V) 8-hydroxyquinoline complex

Semiha Çakir, Ender Biçer, Panče Naumov, Osman Çakir

Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

A novel solid oxovanadium(V) complex, monoaqua(8-hydroxyquinolinato)dioxovanadium(V), VO₂(H₂O)(Q) (Q=8-hydroxyquinolinate ion) was synthesized and characterized by FTIR and UV/Vis spectroscopy, voltammetric measurements and Hartree-Fock ab initio calculations on the models of the ligand Q and the respective phenol QH. Electrochemical measurements in solution clearly showed complex formation between NH₄VO₃ and 8-hydroxyquinoline, revealing an electrode reaction of the intermediate NH₄[VO₂(Q)OH] species on the mercury electrode in 0.1 M NH₃/NH₄Cl buffer (pH 9.85) as a reversible process at -0.700 V (vs. Ag | AgCl | KCl_sat reference electrode). The square-wave voltammogram of an aqueous solution of the VO₂(H₂O)(Q) complex obtained with thermal deamination of NH₄[VO₂(Q)OH] presented a new reversible peak at -0.720V.

Original language	English (US)
Pages (from-to)	1461-1471
Number of pages	11
Journal	Journal of Coordination Chemistry
Volume	55
Issue number	12
DOIs	https://doi.org/10.1080/0095897021000058853
State	Published - Dec 1 2002

Keywords

8-Hydroxyquinoline
Ab initio Calculations
Ammonium trioxovanadate(V)
Electronic spectra
FTIR spectra
Oxine
Voltammetry

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Materials Chemistry

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10.1080/0095897021000058853

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title = "Synthesis, spectroscopic and voltammetric studies of a novel dioxovanadate(V) 8-hydroxyquinoline complex",

abstract = "A novel solid oxovanadium(V) complex, monoaqua(8-hydroxyquinolinato)dioxovanadium(V), VO2(H2O)(Q) (Q=8-hydroxyquinolinate ion) was synthesized and characterized by FTIR and UV/Vis spectroscopy, voltammetric measurements and Hartree-Fock ab initio calculations on the models of the ligand Q and the respective phenol QH. Electrochemical measurements in solution clearly showed complex formation between NH4VO3 and 8-hydroxyquinoline, revealing an electrode reaction of the intermediate NH4[VO2(Q)OH] species on the mercury electrode in 0.1 M NH3/NH4Cl buffer (pH 9.85) as a reversible process at -0.700 V (vs. Ag | AgCl | KClsat reference electrode). The square-wave voltammogram of an aqueous solution of the VO2(H2O)(Q) complex obtained with thermal deamination of NH4[VO2(Q)OH] presented a new reversible peak at -0.720V.",

keywords = "8-Hydroxyquinoline, Ab initio Calculations, Ammonium trioxovanadate(V), Electronic spectra, FTIR spectra, Oxine, Voltammetry",

author = "Semiha {\c C}akir and Ender Bi{\c c}er and Pan{\v c}e Naumov and Osman {\c C}akir",

year = "2002",

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doi = "10.1080/0095897021000058853",

language = "English (US)",

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T1 - Synthesis, spectroscopic and voltammetric studies of a novel dioxovanadate(V) 8-hydroxyquinoline complex

AU - Çakir, Semiha

AU - Biçer, Ender

AU - Naumov, Panče

AU - Çakir, Osman

PY - 2002/12/1

Y1 - 2002/12/1

N2 - A novel solid oxovanadium(V) complex, monoaqua(8-hydroxyquinolinato)dioxovanadium(V), VO2(H2O)(Q) (Q=8-hydroxyquinolinate ion) was synthesized and characterized by FTIR and UV/Vis spectroscopy, voltammetric measurements and Hartree-Fock ab initio calculations on the models of the ligand Q and the respective phenol QH. Electrochemical measurements in solution clearly showed complex formation between NH4VO3 and 8-hydroxyquinoline, revealing an electrode reaction of the intermediate NH4[VO2(Q)OH] species on the mercury electrode in 0.1 M NH3/NH4Cl buffer (pH 9.85) as a reversible process at -0.700 V (vs. Ag | AgCl | KClsat reference electrode). The square-wave voltammogram of an aqueous solution of the VO2(H2O)(Q) complex obtained with thermal deamination of NH4[VO2(Q)OH] presented a new reversible peak at -0.720V.

AB - A novel solid oxovanadium(V) complex, monoaqua(8-hydroxyquinolinato)dioxovanadium(V), VO2(H2O)(Q) (Q=8-hydroxyquinolinate ion) was synthesized and characterized by FTIR and UV/Vis spectroscopy, voltammetric measurements and Hartree-Fock ab initio calculations on the models of the ligand Q and the respective phenol QH. Electrochemical measurements in solution clearly showed complex formation between NH4VO3 and 8-hydroxyquinoline, revealing an electrode reaction of the intermediate NH4[VO2(Q)OH] species on the mercury electrode in 0.1 M NH3/NH4Cl buffer (pH 9.85) as a reversible process at -0.700 V (vs. Ag | AgCl | KClsat reference electrode). The square-wave voltammogram of an aqueous solution of the VO2(H2O)(Q) complex obtained with thermal deamination of NH4[VO2(Q)OH] presented a new reversible peak at -0.720V.

KW - 8-Hydroxyquinoline

KW - Ab initio Calculations

KW - Ammonium trioxovanadate(V)

KW - Electronic spectra

KW - FTIR spectra

KW - Oxine

KW - Voltammetry

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VL - 55

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EP - 1471

JO - Journal of Coordination Chemistry

JF - Journal of Coordination Chemistry

IS - 12

ER -

Synthesis, spectroscopic and voltammetric studies of a novel dioxovanadate(V) 8-hydroxyquinoline complex

Abstract

Keywords

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