Reduction of Vanadium(V) with ascorbic acid and isolation of the generated oxovanadium(IV) species

被引：22

作者：

Ferrer, EG ^{[1
]}

Baran, EJ ^{[1
]}

机构：

[1] Natl Univ La Plata, Fac Ciencias Exactas, CONICET, CEQUINOR, RA-1900 La Plata, Argentina

来源：

BIOLOGICAL TRACE ELEMENT RESEARCH | 2001年 / 83卷 / 02期

关键词：

vanadium(V); ascorbic acid; oxovanadium(IV) complexes; spectroscopic characterization; thermal behavior; vanadium detoxification;

D O I：

10.1385/BTER:83:2:111

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The interaction of sodium metavanadate and VOCl3 with ascorbic acid, one of the possible natural reducing agents of vanadium(V) to oxovanadium(IV), has been investigated. Three new VO2+, complexes could be isolated as microcrystalline powders. One of them, of composition K1.5Na0.5[VO(HAsc)(OH)(3)], contains ascorbic acid as a monodentate ligand. In the other two, K[VO(Diketo)(OH)].H2O and Na-3[VO(Diketo)(2)(OH)], the enolized form of 2,3-diketogulonic acid (one of the oxidation products of ascorbic acid), acts as a bidentate ligand. The complexes were characterized by means of electronic (absorption and reflectance) and infrared spectroscopy and magnetic susceptibility measurements. Their thermal behavior was investigated by thermogravimetric and differential thermal analyses. The interest of the investigated system in relation to vanadium detoxification is also discussed.

引用

页码：111 / 119

页数：9

共 12 条

[1]

Baran EJ, 1997, BOL SOC CHIL QUIM, V42, P247

[2] Oxovanadium(IV) and oxovanadium(V) complexes relevant to biological systems [J].

Baran, EJ .

JOURNAL OF INORGANIC BIOCHEMISTRY, 2000, 80 (1-2) :1-10

[3]

BARAN EJ, IN PRESS J COORD CHE

[4]

Cieslak-Golonka M, 1999, SPECTROCHIM ACTA A, V55, P421

[5] ONE-ELECTRON REDUCTION OF VANADATE BY ASCORBATE AND RELATED FREE-RADICAL GENERATION AT PHYSIOLOGICAL PH [J].

DING, M ;

GANNETT, PM ;

ROJANASAKUL, Y ;

LIU, KJ ;

SHI, XL .

JOURNAL OF INORGANIC BIOCHEMISTRY, 1994, 55 (02) :101-112

[6] Interaction of the vanadyl(IV) cation with L-ascorbic acid and related systems [J].

Ferrer, EG ;

Williams, PAM ;

Baran, EJ .

ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES, 1998, 53 (02) :256-262

[7] CHELATE ANTIDOTES FOR SODIUM VANADATE AND VANADYL SULFATE INTOXICATION IN MICE [J].

JONES, MM ;

BASINGER, MA .

JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH, 1983, 12 (4-6) :749-756

[8]

Nakamoto K., 1978, INFRARED RAMAN SPECT

[9]

ONISHI H, 1989, PHOTOMETRIC DETER 2B, P674

[10]

SEILER HG, 1994, HDB METALS CLIN ANAL, P531

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