Thiazolylazo dyestuffs as coordinating ligands

Nickless, G.; Pollard, F.H.; Samuelson, T.J.

doi:10.1016/s0003-2670(01)80452-9

Cited by 27 publications

(4 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It forms either neutral or ionic stable chelates with high molar absorptivity with many metal ions according to the solution pH [26][27][28]. Recent literature survey has revealed no study of the reagent TAR for determination and/or chemical speciation of antimony.…”

Section: Introductionmentioning

confidence: 99%

Chemical Speciation of Antimony(III and V) in Water by Adsorptive Cathodic Stripping Voltammetry Using the 4‐(2‐Thiazolylazo) – Resorcinol

et al. 2010

View full text Add to dashboard Cite

A simple adsorptive cathodic stripping voltammetry method has been developed for antimony (III and V) speciation using 4-(2-thiazolylazo) -resorcinol (TAR). The methodology involves controlled preconcentration at pH 5, during which antimony(III) -TAR complex is adsorbed onto a hanging mercury drop electrode followed by measuring the cathodic peak current (I p,c ) at À0.39 V versus Ag/AgCl electrode. The plot of I p,c versus antimony(III) concentration was linear in the range 1.35 10 À9 -9.53 10 À8 mol L À1.The LOD and LOQ for Sb(III) were found 4.06 10 À10 and 1.35 10 À9 mol L À1, respectively. Antimony(V) species after reduction to antimony(III) with Na 2 SO 3 were also determined. Analysis of antimony in environment water samples was applied satisfactorily.

show abstract

Section: Introductionmentioning

confidence: 99%

Chemical Speciation of Antimony(III and V) in Water by Adsorptive Cathodic Stripping Voltammetry Using the 4‐(2‐Thiazolylazo) – Resorcinol

et al. 2010

View full text Add to dashboard Cite

show abstract

“…A recent report by Diehl (3) describes the development of metallochromic indicators. A number of azo dyes are described in the literature for the separation and spectrophotometric determination of metal cations (4); among those often cited are l-(2-pyridylazo)-2-naphthol, (PAN) (5), 4-(2-pyridylazo)resorcinol, (PAR) (6, 7), and 4-(2-thiazolylazo)resorcinol, (TAR) (8)(9)(10). These three o-hydroxyazo dye molecules contain a heterocyclic nitrogen atom which aids in metal ion chelation; all three have a like coordination site:…”

Section: Resultsmentioning

confidence: 99%

Atomic absorption determination of trace elements in calcium sulfate minerals using an organic enrichment technique

Husler¹,

Cruft²

1969

Anal. Chem.

View full text Add to dashboard Cite

“…7 Structures of Cu(II) and Fe(II) complexes are different having a square planer and an octahedral structure, respectively. 8 The influence of complex structures on their interfacial behavior was investigated in the present study.…”

Section: Introductionmentioning

confidence: 99%

Complex Formation of Copper(II) and Iron(II) with Octadecyloxythiazolylazophenol at the Heptane-Water Interface

2004

View full text Add to dashboard Cite

The complex formation of Cu(II) and Fe(II) with a hydrophobic ligand, 5-(octadecyloxy)-2-(2-thiazolylazo)phenol (TARC18), was investigated in the heptane/water system by the high-speed stirring spectrometry and the micro-two phase flow ESI/MS method. At first, the dissociation constant of TARC18 at the heptane/water interface was determined as pKa = 7.11. The interfacial complexation of the ligand with Cu(II) and Fe(II) under stirred conditions progressed with an increase of the pH. The experimental results showed that a 1:1 complex of Cu(II) and TARC18 was formed at the interface, but was hardly extracted into the heptane phase. On the other hand, the 1:2 complex of Fe(II) with TARC18 formed at the interface was significantly extracted into the heptane phase. The extraction constants and interfacial complex formation constants were estimated for the two systems from the experimental results, and all of the reaction schemes, including the interfacial reactions, were elucidated.

show abstract

Thiazolylazo dyestuffs as coordinating ligands

Cited by 27 publications

References 12 publications

Chemical Speciation of Antimony(III and V) in Water by Adsorptive Cathodic Stripping Voltammetry Using the 4‐(2‐Thiazolylazo) – Resorcinol

Chemical Speciation of Antimony(III and V) in Water by Adsorptive Cathodic Stripping Voltammetry Using the 4‐(2‐Thiazolylazo) – Resorcinol

Atomic absorption determination of trace elements in calcium sulfate minerals using an organic enrichment technique

Complex Formation of Copper(II) and Iron(II) with Octadecyloxythiazolylazophenol at the Heptane-Water Interface

Contact Info

Product

Resources

About