POLAROGRAPHIC CHARACTERISTICS AND THERMODYNAMICS APPLIED IN [Cd - L-AMINO ACIDATES - VITAMIN-B7] TERNARY SYSTEM

The present work describes the complexe formation of the Cd (II) with amino acids (L-glutamine, L-asparagine, L-valine, L-leucine, á-alanine and glycine) as primary ligands and vitamin-B7 (â-biotin) as secondary ligand by polarographic technique. The Cd (II) formed 1: 1: 1, 1: 1: 2 and 1: 2: 1 compl...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	KHAN,FARID, RAI,KAVITA
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2013
Materias:	Cd-L-amino acids-vitamin-B7 complexes Cd complexes
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000200001
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0717-97072013000200001
record_format	dspace
spelling	oai:scielo:S0717-970720130002000012014-09-09POLAROGRAPHIC CHARACTERISTICS AND THERMODYNAMICS APPLIED IN [Cd - L-AMINO ACIDATES - VITAMIN-B7] TERNARY SYSTEMKHAN,FARIDRAI,KAVITA Cd-L-amino acids-vitamin-B7 complexes Cd complexes The present work describes the complexe formation of the Cd (II) with amino acids (L-glutamine, L-asparagine, L-valine, L-leucine, á-alanine and glycine) as primary ligands and vitamin-B7 (â-biotin) as secondary ligand by polarographic technique. The Cd (II) formed 1: 1: 1, 1: 1: 2 and 1: 2: 1 complexes at pH = 7.30 ± 0.01, µ = 1.0 M KNO3. The Cd (II) showed the two electrons reversible reduction wave with diffusion controlled nature. The trend of the stability constants of the complexes with respect to primary ligand was L-glutamine < L-asparagine < L-valine < L-leucine < á-alanine < L-glycine. The thermodynamic parameters like enthalpy, free energy, and entropy change is also determined. The results showed that the complexes were lesser stable at high temperature and formed with the evolution of heat.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.58 n.2 20132013-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000200001en10.4067/S0717-97072013000200001
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Cd-L-amino acids-vitamin-B7 complexes Cd complexes
spellingShingle	Cd-L-amino acids-vitamin-B7 complexes Cd complexes KHAN,FARID RAI,KAVITA POLAROGRAPHIC CHARACTERISTICS AND THERMODYNAMICS APPLIED IN [Cd - L-AMINO ACIDATES - VITAMIN-B7] TERNARY SYSTEM
description	The present work describes the complexe formation of the Cd (II) with amino acids (L-glutamine, L-asparagine, L-valine, L-leucine, á-alanine and glycine) as primary ligands and vitamin-B7 (â-biotin) as secondary ligand by polarographic technique. The Cd (II) formed 1: 1: 1, 1: 1: 2 and 1: 2: 1 complexes at pH = 7.30 ± 0.01, µ = 1.0 M KNO3. The Cd (II) showed the two electrons reversible reduction wave with diffusion controlled nature. The trend of the stability constants of the complexes with respect to primary ligand was L-glutamine < L-asparagine < L-valine < L-leucine < á-alanine < L-glycine. The thermodynamic parameters like enthalpy, free energy, and entropy change is also determined. The results showed that the complexes were lesser stable at high temperature and formed with the evolution of heat.
author	KHAN,FARID RAI,KAVITA
author_facet	KHAN,FARID RAI,KAVITA
author_sort	KHAN,FARID
title	POLAROGRAPHIC CHARACTERISTICS AND THERMODYNAMICS APPLIED IN [Cd - L-AMINO ACIDATES - VITAMIN-B7] TERNARY SYSTEM
title_short	POLAROGRAPHIC CHARACTERISTICS AND THERMODYNAMICS APPLIED IN [Cd - L-AMINO ACIDATES - VITAMIN-B7] TERNARY SYSTEM
title_full	POLAROGRAPHIC CHARACTERISTICS AND THERMODYNAMICS APPLIED IN [Cd - L-AMINO ACIDATES - VITAMIN-B7] TERNARY SYSTEM
title_fullStr	POLAROGRAPHIC CHARACTERISTICS AND THERMODYNAMICS APPLIED IN [Cd - L-AMINO ACIDATES - VITAMIN-B7] TERNARY SYSTEM
title_full_unstemmed	POLAROGRAPHIC CHARACTERISTICS AND THERMODYNAMICS APPLIED IN [Cd - L-AMINO ACIDATES - VITAMIN-B7] TERNARY SYSTEM
title_sort	polarographic characteristics and thermodynamics applied in [cd - l-amino acidates - vitamin-b7] ternary system
publisher	Sociedad Chilena de Química
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000200001
work_keys_str_mv	AT khanfarid polarographiccharacteristicsandthermodynamicsappliedincdlaminoacidatesvitaminb7ternarysystem AT raikavita polarographiccharacteristicsandthermodynamicsappliedincdlaminoacidatesvitaminb7ternarysystem
_version_	1718445484570312704

POLAROGRAPHIC CHARACTERISTICS AND THERMODYNAMICS APPLIED IN [Cd - L-AMINO ACIDATES - VITAMIN-B7] TERNARY SYSTEM

Ejemplares similares