Synthesis and Characterization of Schiff Bases Coordination Compounds of Lanthanide(III) Perchlorates

Kishor Arora1,*, Mukesh Sharma2 and K.P. Sharma3

1Department of Chemistry, Government K.R.G. Autonomous Post Graduate College, Gwalior- 474 001, India

2Department of Chemistry, G.L.S. College, Banmore-476 444, India 3Department of Chemistry, S.M.S. Government Science College, Gwalior-474 002, India

*Corresponding author: kishorarora@rediffmail.com; kishoraroda@gmail.com

Abstract

Dicyanoethylation of m-toluidine was carried out by treating the aromatic primary amine with acryonitrile in acetic acid in presence of cuprous chloride. The cyanoethylated amine on formylation gave 2-methyl-4-NN-bis-2'-cyanoethylaminobenzaldehyde. The resulted aldehyde gave Schiff bases 2-methyl-4-NN-bis-2′-cyanoethylaminobenzylidineaniline (MCEABAB), 2-methyl-4-NN-bis-2′-cyanoethylaminobenzylidine p-chloroaniline (MCEABCAB), 2-methyl- 4-NN-bis-2′-cyanoethylaminobenzylidine p-toludine (MCEABPT) and 2-methyl-4-NN-bis-2′- cyanoethylaminobenzylidine p-fluoroaniline (MCEABFAB) with aniline and three different substituted anilines. Lanthanide oxides viz., lanthanum oxide, praseodymium oxide and neodymium oxide were chosen to synthesize new complexes, heaving a general formula [Ln(L)6(ClO4)3] [where Ln = La, Pr and Nd; L = MCEABAB, MCEABCAB, MCEABPT and MCEABFAB]. In all twelve new lanthanide(III) perchlorate complexes of Schiff bases have been prepared. Elemental analyses, molecular weight, melting point, conductivity measurement, spectral studies, thermal analysis and microbial activities of the complexes were carried out.

Keywords

Lanthanide(III) perchlorate complexes, Spectral, TGA and Antimicrobial studies.

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  • Asian J. Chem. /
  •  2011 /
  •  23(2) /
  •  pp 519-521