Some tetrazolium salts and their ion-association complexes with the molybdenum(VI) — 4-nitrocatechol anionic chelate

DTA and TGA study
  • K. GavazovEmail author
  • V. Lekova
  • B. Boyanov
  • A. Dimitrov
Regular Papers Complexes


Several commercially available 2H-tetrazolium salts (TS) {2,3,5-triphenyl-2H-tetrazolium chloride (TTC), 3-(1-naphthyl)-2,5-diphenyl- 2H-tetrazolium chloride (Tetrazolium Violet, TV), 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT), 2-(4-iodophenyl)-3-(4-nitrophenyl)-5-phenyl-2H-tetrazolium chloride (INT) and 3,3′-(3,3′-dimethoxy-4,4′-biphenylene)-bis(2,5-diphenyl- 2H-tetrazolium) chloride (Tetrazolium Blue Chloride, BTC)} and their ion-associated complexes (IAC) with the Mo(VI) — 4-nitrochatechol (4-NC) anionic chelate [MoO2(4-NC)2]2− have been investigated by differential thermal analysis (DTA) and thermogravimetric analysis (TG). Some special features of the thermal behavior of the compounds have been discussed. The results show that the thermal stability of IAC depends on the factors determining the values of their association constants β: molecular mass and the presence of nitrophenyl substituent(s) in the tetrazolium ring.


ion-associated complexes 4-nitrocatechol tetrazolium salts thermal decomposition thermal stability 


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2009

Authors and Affiliations

  • K. Gavazov
    • 1
    Email author
  • V. Lekova
    • 1
  • B. Boyanov
    • 2
  • A. Dimitrov
    • 1
  1. 1.Department of General and Inorganic ChemistryPlovdiv UniversityPlovdivBulgaria
  2. 2.Department of Chemical TechnologyPlovdiv UniversityPlovdivBulgaria

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