Chapter 3. Analytical reagents having nitrogen (N) and oxygen (O) as donor atoms

2021 ◽  
pp. 97-128
Keyword(s):  
Analytical Reagents

N-ACYL SUBSTITUTED PHENYLHYDROXYLAMINES: THE EFFECT OF RADICAL CHANGE ON ANALYTICAL BEHAVIOR

1957 ◽  
Vol 35 (12) ◽  
pp. 1454-1460 ◽  
Author(s):  
C. A. Armour ◽  
D. E. Ryan
Keyword(s):  
Aqueous Solution ◽  
Stability Constant ◽  
Radical Change ◽  
Spectrophotometric Study ◽  
Iron Complex ◽  
Membered Ring ◽  
Analytical Reagents ◽  
Colorimetric Reagent ◽  
Analytical Behavior

The synthesis of a number of N-acyl substituted phenylhydroxylamines is outlined and the effect of the change in the nature of the acyl group on their usefulness as analytical reagents is described. Stability constant measurements in alcohol show an increase in stability with an increase in basicity of reagent regardless of the nature of the attached group; their ability to precipitate complexes from aqueous solution, however, is markedly dependent on the nature of the attached radical. A spectrophotometric study shows the existence of both a 1:1 and a 1:3 iron complex. A more sensitive colorimetric reagent results with an unsaturated five-membered ring as the attached grouping.

Diphenylglyoxal and dipyridylglyoxal bis(benzoylhydrazone) as analytical reagents

Talanta ◽  
1980 ◽  
Vol 27 (7) ◽  
pp. 615-616 ◽  
Author(s):  
M. Silva ◽  
M. Gallego ◽  
M. Valcárcel
Keyword(s):  
Analytical Reagents

scholarly journals Syntheses and Utilities of New Analytical Reagents for Potassium. I-II. I. Di-Hexyl.

1955 ◽  
Vol 76 (1) ◽  
pp. 104-106 ◽  
Author(s):  
Masayoshi Ishibashi ◽  
Kyôji Tôei
Keyword(s):  
Analytical Reagents
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