Asymmetric derivatives of carbohydrazide and thiocarbohydrazide as analytical reagents.
The synthesis and analytical properties of two asymmetric derivatives of carbohydrazide and thiocarbohydrazide with pyridine and phenol have been studied. The compounds tested are 1-(2-pyridylmethylideneamino)-3-(salicylideneamino)urea and 1-(2-pyridylmethylideneamino)-3-(salicylideneamino) thiourea. The analytical utility of these reagents is outlined. A spectrophotometric method for determining the formation constants of the complexes is described.
Rosales
D
D
Department of Analytical Chemistry, Faculty of Chemistry, University of Seville, Seville -4, Spain.
Gonzalez
G
G
Ariza
J L
JL