Syntheses, spectroscopic and magnetic properties of polystyrene-anchored coordination compounds of thiazolidinone

Abstract

The reaction between polystyrene 3-formylsalicylate and furoic acid hydrazide in DMF in the presence of ethyl acetate results in the formation of polystyrene N-(2-carbamoylfuranyl)-3'-carboxy-2'-hydroxybenzylideneimine (I). A benzene suspension of I reacts with mercaptoacetic acid and forms the polystyrene N-(2-carbamoylfuranyl)-C-(3'-carboxy-2'-hydroxyphenyl)thiazolidin-4-one, PSCH₂–LH₂ (II). A DMF suspension of II reacts with Mn(II), Ni(II), Cd(II), Fe(III) and UO₂(VI) ions and forms the polystyrene-anchored coordination compounds of the types, [PSCH₂–LMn(DMF)₃], [PSCH₂–LNi(DMF)₃], [PSCH₂–LCd(DMF)], [PSCH₂–LH₂FeCl₃] and [PSCH₂–LHUO₂(NO₃)(DMF)]. The polystyrene-anchored coordination compounds have been characterized on the basis of elemental analyses, spectral (IR, reflectance) studies and magnetic susceptibility measurements. II acts as a neutral tridentate ONO donor ligand in [PSCH₂–LH₂FeCl₃], a monobasic tridentate ONO donor ligand in [PSCH₂–LHUO₂(NO₃)(DMF)], a dibasic tridentate ONO donor ligand in [PSCH₂–LMn(DMF)₃], [PSCH₂–LNi(DMF)₃] and [PSCH₂–LCd(DMF)]. A tetrahedral structure for Cd(II) and an octahedral structure for Mn(II), Ni(II)_, Fe(III) and a square-antiprism geometry for UO₂(VI) complex are suggested.

KEY WORDS: Thiazolidin-4-one, Polystyrene-anchored coordination compounds, Magnetic susceptibility, Complexometric, Magnetically dilute

Bull. Chem. Soc. Ethiop. 2014, 28(1), 29-36.

DOI: http://dx.doi.org/10.4314/bcse.v28i1.4