Polythiosemicarbazides. II. Effect of chemical structure on chelating properties. Structure of the chelates

Abstract

Abstract Polythiosemicarbazides react with acqueous Cu +2 solutions with formation of polymeric chelates, for which the following structure is typical: The adsorption of Cu 2+ by the polymer proceeds selectively and in preference to Fe 3+ , Zn 2+ , W 6+ , Al 3+ , Be 2+ , Cr 3+ , UO 2 2+ , Ni 2+ , V 5+ , Mo 6+ , Hf 4+ , Zr 4+ , Ta 5+ , Nb 5+ . Separations of these metals from Cu 2+ are therefore possible.