Abstract
The crosslinked chloromethylated polystyrene (PSCH2–Cl) reacts with the Schiff base, derived from condensation of PSCH2–Cl with 3-formylsalicylic acid and salicylhydrazide to form a polystyrene-anchored Schiff base, PSCH2–LH3 (1). Compound 1 reacts with a number of metal ions to form polystyrene-anchored coordination compounds, PSCH2–LHM · DMF (where M = Cu, Zn, Cd, UO2, and MoO2), PSCH2–LHM′ · 3DMF (where M′ = Mn, Co, and Ni), PSCH2–LHFeCl · 2DMF, and PSCH2–LHZr(OH)2 · 2DMF. The polystyrene-anchored coordination compounds have been characterized by elemental analyses, spectra (infrared, reflectance, and electron spin resonance) and magnetic susceptibility measurements. The polystyrene-anchored compounds are magnetically dilute. Shifts in band positions of the groups involved in coordination have been utilized to find tridentate ONO donor behavior of 1. The polystyrene-anchored Zn(II), Cd(II), Zr(IV), MoO2(VI), and UO2(VI) compounds are diamagnetic, while Mn(II), Co(II), Ni(II), Cu(II), and Fe(III) compounds are paramagnetic. The polystyrene-anchored Cu(II) compound is square planar; Zn(II) and Cd(II) compounds are tetrahedral; Co(II), Ni(II), Mn(II), Fe(III), MoO2(VI), and UO2(VI) compounds are octahedral; and Zr(IV) compound is pentagonal bipyramidal.
Acknowledgments
The authors (P.K. Gupta, A. Kumar, and D. Dass) are grateful to the respective Directors of their Institute for providing financial assistance for this study.