Synthesis and Characterization of Metal Bound Polymers

D. Kumar¹*, Jay Pal¹, P. K. Gupta¹, DurgA Das² and A. Syamal³

¹Department of Chemistry, National Institute of Technology, Kurukshetra - 136119 (India) ²Department of Chemistry, Haryana College of Technology and Management, Kaithal - 136 027 (India) ³Department of Chemistry, SKIET, Kurukshetra - 136119 (India)

Aldehydopolystyrene (PS-CHO, crosslinked with 2% divinylbenze) reacts with 2-aminophenol in 1:3 molar ratio to form polystyrene-anchored Schiff base, PS-LH(I). PS-LH reacts with metal salts in DMF to form metal bound polymers, (PS-LM(CH3COO). DMF) (where M = Cu (II), Co (II), Cd (II), Zn (II), UO2 (VI)) ; [PS-LZr (OH)2 (CH3COO). 2DMF] ; [PS-LNi (CH3COO).3DMF] ; [PS-LFeCI2.2DMF] AND [PS – LMoO2(acac)] (Where acacH = acetylacetone). These metal bound polymers have been characterized on the basis of elemental analyses, IR, reflectance spectral and magnetic susceptibility measurements. The shifts of the n(C=N) (azomethine), n(C-O) (phenolic) stretches have been followed to determine the ON donor behaviour of PS-LH. The polystyrene-anchored copper (II) and cobalt (II) compounds are paramagnetic and have square planar structure ; nickel (II) and iron (III) coordination compounds are paramagnetic and have octahedral structure ; cadmium (II) and zinc (II) compounds are diamagnetic and have tetrahedral structure ; dioxomolybdenum (VI) and dioxouranium (VI) and diamagnetic and have octahedral structure. [PS-LZr(OH)2(CH3COO).2DMF] is diamagnetic showing pentagonal bipyramidal geometry. All the metal bound polymers are magnetically dilute in nature.

Polystyrene supported Schiff base; Functionalized polymers; Polymer-metal complexes; Metal bound polymers