6-Methyl-2-pyridinecarboxamide oxime, a reagent for copper.
6-Methyl-2-pyridinecarboxamide oxime (R) forms a yellow compound with copper(I), the molar absorptivity being 7.2 x 10(3) at the wavelength of maximum absorption, 405 nm. The copper compound, CuR(2), forms completely over the pH range 4.5-7 and is easily extracted into isoamyl alcohol. R is highly specific for copper, the methyl group neighbouring the ring nitrogen atom preventing reaction with iron and other metals.
Pemberton
J R
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Department of Chemistry Iowa State University Ames, Iowa 50010, U.S.A.
Diehl
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