Research Article
Complex Formation in a Liquid-Liquid Extraction System Containing Cobalt(II), 4-(2-Pyridylazo)resorcinol, and Nitron
Table 3
Spectral characteristics of some extracted in organic solvents Co-PAR complexes*.
| Additional reagent(s) | Organic solvent | Molar absorptivity, L mol−1 cm−1 | , nm | Ref. |
| Xylomethazoline hydrochloride | Chloroform | | 535 | [24] | Diphenylguanidine | Chloroform | | 520–530 | [27] | Triphenyltetrazolium chloride | Chloroform | | 515 | [36] | Iodonitrotetrazolium chloride | Chloroform | | 515 | [36] | Zephiramine | Chloroform | | 520 | [28] | Tetradecyl-dimethylbenzyl-ammonium chloride + EDTA | Chloroform | | 520 | [35] | Dicyclohexyl-18-crown-6 | 1,2-dichloroethane | | 515 | [26] | Tetraphenylarsonium chloride | Chloroform | | 520 | [29] | Tetraphenylphosphonium chloride | Chloroform | | 520 | [29] | Nitron | Chloroform | | 520 | This work |
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The molar absorptivity of the binary cobalt-PAR complex in aqueous medium is L mol−1 cm−1 [39].
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