Ternary complexes of vanadium(IV) with 4-(2-pyridylazo)-resorcinol (PAR) and ditetrazolium chlorides (DTC)

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dc.authoridGavazov, Kiril Blazhev/0000-0002-1360-8977
dc.authoridGavazov, Kiril Blazhev/0000-0002-1360-8977;
dc.authorwosidGavazov, Kiril Blazhev/KGK-4617-2024
dc.authorwosidGavazov, Kiril Blazhev/I-3987-2019
dc.authorwosidTurkyilmaz, Murat/AAK-7876-2020
dc.contributor.authorGenc, Fatma
dc.contributor.authorGavazov, Kiril B.
dc.contributor.authorTurkyilmaz, Murat
dc.date.accessioned2024-06-12T11:17:01Z
dc.date.available2024-06-12T11:17:01Z
dc.date.issued2010
dc.departmentTrakya Üniversitesien_US
dc.description.abstractComplex formation and liquid-liquid extraction have been studied for ternary complexes of vanadium(IV) with 4-(2-pyridylazo)-resorcinol (PAR) and ditetrazolium chlorides (DTC) in a water-chloroform medium. The specific ditetrazolium compounds investigated were i) 3,3'-(4,4'-biphenylene)-bis(2,5-diphenyl-2H-tetrazolium) chloride (Neotetrazolium chloride, NTC); ii) 3,3'-(3,3'-dimetoxy-4,4'-biphenylene)-bis(2,5-diphenyl-2H-tetrazolium) chloride (Blue Tetrazolium chloride, BTC); and iii) 3,3'-(3,3'-dimetoxy-4,4'-biphenylene)bis[2-(4-nitrophenyl)-5-phenyl-2H-tetrazolium] chloride (Nitro Blue Tetrazolium chloride, NBT). Molar absorptivity coefficients and the composition of the complexes have been calculated. Association constants (beta) have also been obtained for the interactions between the vanadium(IV) - PAR anionic chelates [VO(PAR)(2)](2-) (I) and [VO(OH)(2)(PAR)(2)](4-) (II), and ditetrazolium cations (DT2+). Some special features of NBT as an extraction-spectrophotometric reagent for vanadium(IV) have been discussed. Unlike NTC and BTC which form complexes with both I and II, NBT associates only with II. The pH interval for complete extraction of (NBT(2+))(2)[VO(OH)(2)(PAR)(2)] is broader and allows work at lower pH values the other ion-associates of V(IV, V)-PAR that were studied. NBT is -therefore the appropriate reagent both for direct V(IV) determination and for V(IV)/V(V) separation. Some additional characteristics for the V(IV)-PAR-NBT-water-chloroform system have been determined: extraction constant, distribution constant, recovery factor, limit of detection and limit of quantification. Beer's law is valid up to 1.4 mu g mL(-1) vanadium(IV) with molar absorptivity coefficient of 3.55 x 10(4) L mol(-1) cm(-1) at lambda(max)=559 nm.en_US
dc.description.sponsorshipPlovdiv University [09-H10]en_US
dc.description.sponsorshipThis work was supported by the Research Fund of the Plovdiv University (Grant No 09-H10).en_US
dc.identifier.doi10.2478/s11532-009-0119-7
dc.identifier.endpage467en_US
dc.identifier.issn1895-1066
dc.identifier.issue2en_US
dc.identifier.scopus2-s2.0-77951785819en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage461en_US
dc.identifier.urihttps://doi.org/10.2478/s11532-009-0119-7
dc.identifier.urihttps://hdl.handle.net/20.500.14551/24545
dc.identifier.volume8en_US
dc.identifier.wosWOS:000276548300030en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherVersitaen_US
dc.relation.ispartofCentral European Journal Of Chemistryen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectVanadium(IV)en_US
dc.subjectNitro Blue Tetrazoliumen_US
dc.subjectIon-Associate Complexen_US
dc.subjectLiquid-Liquid Extractionen_US
dc.subjectSpectrophotometryen_US
dc.subjectExtractive-Spectrophotometric Determinationen_US
dc.subjectEnvironmental-Samplesen_US
dc.subjectSpeciation Analysisen_US
dc.subjectTetrazolium Saltsen_US
dc.subjectAnionic Chelateen_US
dc.subjectPlant Materialsen_US
dc.subject4-(2-Pyridylazo)Resorcinolen_US
dc.subjectVioleten_US
dc.subjectWateren_US
dc.subjectAciden_US
dc.titleTernary complexes of vanadium(IV) with 4-(2-pyridylazo)-resorcinol (PAR) and ditetrazolium chlorides (DTC)en_US
dc.typeArticleen_US

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