Schiff s bases having functioned groups adjacent to the carbon-nitrogen bond so that chelation (ring formation) can occur with metal atoms are of interest because of the intense colors of the metal derivatives. Thus, the compound l,3-bis(2'-pyridyl)-2,3- diaza-l-propene (I) abbreviated PDP reported by Lions and Martin (1) and Geldard and Lions (2) forms a compound with cobalt so intensely colored as to offer promise of use in the analytical chemistry of cobalt. We have now investigated the cobalt, iron and nickel derivatives of PDP in detail and have investigated also certain similar Schiff's bases such as 1-(2' - hydrozyphenyl)-3-pyridyl-2,3-diaza-l-propene (II) , designated later at HPDP.
Proceedings of the Iowa Academy of Science
©1964 Iowa Academy of Science, Inc.
Hunt, L. Keith and Diehl, Harvey
"Schiff's Bases of Pyridylhydrazine as Analytical Reagents for Cobalt,"
Proceedings of the Iowa Academy of Science, 71(1), 151-157.
Available at: https://scholarworks.uni.edu/pias/vol71/iss1/24