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Paper Information

Journal:   IRANIAN JOURNAL OF CHEMISTRY AND CHEMICAL ENGINEERING (IJCCE)   2004 , Volume 23 , Number 2; Page(s) 113 To 119.
 
Paper: 

SYNTHESIS AND CHARACTERIZATION OF SOME LANTHANIDE(III) CHLORO COMPLEXES DERIVED FROM 4[N-(4'-HYDROXY-3'-METHOXYBENZALIDENE) AMINO] ANTIPYRINE SEMICARBAZONE AND 4[N-(3',4',5'-TRIMETHOXYBENZALIDENE) AMINO]ANTIPYRINE SEMICARBAZONE

 
 
Author(s):  AGARWAL R.K., CHAKRABORTI I., PRASAD S.
 
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Abstract: 

Lanthanide(III) chloro complexes of 4[N-(4'-hydroxy-3'-methoxybenzalidene) amino] antipyrine semicarbazone (HMBAAPS) (I) and 4[N-(3',4',5'-trimethoxybenzalidene) amino] antipyrine semicarbazone (TMBAAPS) (II) with the general composition LnCl3.2L (Ln = La, Pr, Nd, Sm, Gd, Tb, Dy or Ho; L = HMBAAPS or TMBAAPS) are reported. All the complexes were synthesized in ethanolic medium and refluxed the reaction mixture (1:2.2, M:L ratio). The yield percentage ranging from 78 - 82%. The complexes are non-ionic in nature. The infrared spectral studies reveal that both of the semicarbazones are tridentate (N,N,O) ligands. Magnetic spectral and thermal properties of the complexes have also been investigated. A coordination number nine is tentatively suggested in these complexes.

 
Keyword(s): LANTHANIDE(III) COMPLEXES, LANTHANIDE(III) CHLORO COMPLEXES, LANTHANIDE(III) CHLORO COMPLEXES OF 4[N-(4'-HYDROXY-3' METHOXYBENZALIDENE)AMINO] ANTIPYRINE SEMICARBAZONE AND LANTHANIDE(III) CHLORO COMPLEXES OF 4[N-(3',4',5'-TRIMETHOXYBENZALIDENE)AMINO]ANTIPYRINE MICARBAZONE.
 
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