Abstract
1-Picolinoyl-2-(2'-hydroxybenzylidene) hydrazine was synthesized from picolinoyl hydrazide and salicylaldehyde, and its reaction with various metal ions has been investigated. The reagent gave soluble complexes of copper with greenyellow coloration and of iron (III) with yellowbrown.
The reaction with copper was very sensitive, and the reagent was used as a new analytical reagent for copper which afforded the determination of 0.11.3 ppm Cu. The complex had a maximum absorption at 420 mμ and the molar ratio of copper: reagent was estimated as 1:1 by a continuous variation method and a slope ratio method.
