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Peroxo heteroligand vanadates(V): Synthesis, spectra-structure relationships, and stability toward decomposition

  • Cirila Djordjevic
  • Nikola Vuletic
  • Myunghi Lee Renslo
  • Bruce C. Puryear
  • Ramin Alimard
Chapter
Part of the Developments in Molecular and Cellular Biochemistry book series (DMCB, volume 16)

Abstract

Effect of heteroligands (L) on the properties of vanadium peroxides was investigated by preparing a number of peroxo vanadium complexes, which were characterized by analysis, IR, UV/V and NMR spectra. X-ray structures for some were obtained. The vanadates(V) contain the cation M(I) = Na, K, NH4, Rb or Cs. Diperoxo complexes include M(I)[VO(O2)2 L], where L = dipyridyl, o-phenanthroline; M(I)3[VO(O2)2(C2O4)]; K2[(nicotinic acid){VO(O2)2}2]H2O;M(I)4[O{VO(O2)2}2cystine]2H2O; H4[O{VO(O2)2(adenine)2)2]2H2O; and K2H2[O{VO(O2)2(adenosine)}2]2H2O. Monoperoxo vanadates(V) correspond to the formula M(I)2[VO(O2)L]2 for L = citrate and malate; M(I)2[VO(O2)L] for L = nitrilotriacetate; M(I)[VO(O2)L] for L = iminodiacetate, tartrate and EDTA; and [HVO2(O2)(adenosine)]2H2O. Syntheses of these heteroligand peroxovanadium compounds are sensitive to pH, temperature and the concentration of the components. The stability towards decomposition in solid state, mother-liquid and pure water solutions depends upon the heteroligand. Characteristic (V=0) and (O-O) stretching frequency bands in IR can be correlated with the corresponding bond lengths and the [peroxo∼V(V)] charge transfer bands in UV/V spectra. Intramolecular one-electron transfer in peroxo vanadates(V) can trigger the generation of radicals, and its dependency upon the nature of the heteroligand is discussed.

Key words

vanadium peroxo complexes peroxo aminopolycarboxylato vanadates peroxo cystine vanadate peroxo adenine vanadate peroxo adenosine vanadate peroxo-vanadium charge transfer bands 

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Copyright information

© Kluwer Academic Publishers 1995

Authors and Affiliations

  • Cirila Djordjevic
    • 1
  • Nikola Vuletic
    • 2
  • Myunghi Lee Renslo
    • 3
  • Bruce C. Puryear
    • 4
  • Ramin Alimard
    • 5
  1. 1.Department of ChemistryThe College of William and MaryWilliamsburgUSA
  2. 2.Institute of TobaccoZagrebCroatia
  3. 3.Kaiser M. D. AssociatedLos AngelesUSA
  4. 4.Department of Anesthesiology, College of MedicineUniversity of FloridaGainesvilleUSA
  5. 5.Medical College of VirginiaVCURichmondUSA

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