Coordinating Behaviour and the Problem of Ion Exchange Properties Of Respropiophenone With 1, 3-Propanediol Copolymer

Abstract

The present paper intends to report the synthesis, characterization, ionexchange properties and coordination aspects of the title copolymer ligand with isolation and physicochemical characterization of new polymeric chelates. The polymeric ligand was prepared by polycondensation of 2, 4-dihydroxypropiophenone with 1, 3-propanediol. This newly synthesized polymeric ligand has been characterized by elemental analysis, average molecular weight determination, viscosity and TGA studies. A range of polymeric chelates with a [^ML2]n type general formula has been prepared with Cu(II), Ni(II),Co(II), Mn(II), and Zn(II) metal ions. Physicochemical characterizations have been made from diffuse reflectance and vibrational spectra, elemental analysis, magnetic measurements at room temperature and TGA studies. We propose a tetrahedral and square-planar structures for Zn(II) and Cu(II) respectively, whereas octahedral for Ni(II), Co(II), and Mn(II), complexes, according to the data of magnetic and electronic spectral measurements.

The ionexchange properties of 2, 4-Dihydroxypropiophenone 1, 3-propanediol has been studied employing a batch-equilibration method. It was employed to study the selectivity of metal ion uptake over a wide pH range and in media of different ionic strength.