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Russian Journal of General Chemistry

, Volume 85, Issue 1, pp 192–197 | Cite as

Ion-association between some ditetrazolium cations and anions originated from 4-(2-thiazolylazo)resorcinol or 4-(2-pyridylazo)resorcinol

  • K. B. GavazovEmail author
  • G. K. Toncheva
Article

Abstract

Ion-associates between cations originating from ditetrazolium salts [DT: Neotetrazolium chloride (NT), Blue Tetrazolium chloride (BT), Nitro Blue Tetrazolium chloride (NBT), and Tetranitro Blue Tetrazolium chloride (TNBT)] and anions originating from azo compounds [AC: 4-(2-pyridylazo)resorcinol (H2PAR) and 4-(2-thiazolylazo)resorcinol (H2TAR)] were studied by water-chloroform extraction and spectrophotometry. Some key characteristics of the extracted compounds were determined. They can be expressed by different formulae depending on the ACs and DTs used: (1) (DT+)(HPAR) (for DT = BT, NBT or TNBT); (2) (DT2+)(HTAR)2 (for DT = BT, NBT or TNBT); and (3) (DT+)2(HAC)2 (for DT = NT).

Keywords

bis-tetrazolium salts azo dyes spectrophotometry liquid-liquid extraction ion-pair 

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Copyright information

© Pleiades Publishing, Ltd. 2015

Authors and Affiliations

  1. 1.Department of General and Inorganic ChemistryUniversity of Plovdiv “Paisii Hilendarski,”PlovdivBulgaria

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