Details

Autor(en) / Beteiligte

• Kumar, D.
• Syamal, A.
• Sharma, L. K.

Titel

Synthesis and characterization of polystyrene-anchored monobasic bidentate Schiff base and its complexes with bi-, tri-, tetra- and hexavalent metal ions

Ist Teil von

• Journal of coordination chemistry, 2008-06, Vol.61 (11), p.1788-1796

Ort / Verlag

Taylor & Francis Group

Erscheinungsjahr

2008

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• A new monobasic bidentate ON donor Schiff base PS-LH 2 (where PS-LH 2 = polystyrene-anchored Schiff base obtained by condensation of chloromethylated polystyrene (containing 1.17 mmol of chlorine per gram of resin cross-linked with 2% divinylbenzene), 2-hydroxy-1-naphaldehyde and 4-aminosalicylic acid has been synthesized. PS-LH 2 reacts with metal complexes to form polystyrene-anchored complexes: PS-LHM(CH 3 Coo) · DMF (where M = Cu, Zn, Cd, UO 2 ), PS-LHZr(OH) 2 (CH 3 Coo) · 2DMF, PS-LHFeCl 2 · 2DMF, PS-LHM′(CH 3 Coo) · 3DMF (where M′ = Mn and Ni) and PS-LHMoo 2 (acac), where acacH = acetylacetone. The polystyrene-anchored complexes have been characterized by elemental analysis, IR, ESR and magnetic susceptibility measurements. The per cent reaction conversion of PS-LH 2 to polystyrene supported coordination compounds lies between 30-95. Shifts of the azomethine ν(C=N) and phenolic ν(C-O) stretches are indicative of ON donor behaviour of the polystyrene-anchored ligands. The complexes, PS-LHCu(CH 3 Coo) · DMF, PS-LHFecl 2 · 2DMF, PS-LHMn(CH 3 Coo) · 3DMF and PS-LHNi(CH 3 Coo) · 3DMF are paramagnetic, while PS-LHZn(CH 3 Coo) · DMF, PS-LHCd(CH 3 COO) · DMF, PS-LHUo 2 (CH 3 Coo) · DMF, PS-LHZr(OH) 2 (CH 3 COO) · 2DMF and PS-LHMoO 2 (acac) are diamagnetic. The copper(II) complex exhibits a square planar structure, zinc(II) and cadmium(II) complexes have tetrahedral structures, nickel(II), manganese(II), iron(III), dioxomolybdenum(VI) and dioxouranium(VI) complexes have octahedral structure and zirconium(IV) complex is pentagonal bipyramidal.