New chromogens of the ferroin type-X synthesis and chelation properties of some 2-thiazolyl- and 2-pyrimidinylhydrazones.
Preparation of some new hydrazones which possess the ferroin chromophoric group is described, together with results of spectrophotometric studies of their chelation reactions with iron(II), copper(I), cobalt(II) and nickel(II). Several of the new compounds show promise as highly sensitive chromogenic reagents for simultaneous determinations of these metals.
Schilt
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Department of Chemistry, Northern Illinois University, DeKalb, IL 60115, U.S.A.
Case
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