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The structure and complexation equilibria of copper(II) with 4-((ar 4)-nitrophenyl)azo-2-phenyloxazolin-5-one

✍ Scribed by Arafa A. M. Belal

Publisher: Springer
Year: 1995
Tongue: English
Weight: 386 KB
Volume: 20
Category: Article
ISSN: 0340-4285
DOI: 10.1007/bf00139136

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✦ Synopsis

A spectrophotometric method for determining trace amounts of CuII using 4-(4-nitro-phenyl)azo-2-phenyloxazolin-5-one has been devised. With this reagent, Cu n forms a stable chelate, in the 6-9.5 pH range which obeys Beer's law at 555nm with a molar absorptivity of 4.50 x 103 mol-~ cm 2. Other copper-group metals do not interfere with this process. The stoichiometry and stability constant of the copper chelate has been determined using spectrophotometric, potentiometric and conductometric methods.

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The structure and complexation equilibria of copper(II) with 4-((ar 4)-nitrophenyl)azo-2-phenyloxazolin-5-one

✦ Synopsis

The structure and complexation equilibria of copper(II) with 4-((ar 4)-nitrophenyl)azo-2-phenyloxazolin-5-one