SOLUTION STUDY OF TERNARY COMPLEXES OF NICKEL(II) CONTAINING HISTIDINE AND DIOLS

The stability constants of the mixed ligand ternary complexes of nickel(II) of the type MAB, MA2B and MAB2 (where A = histidine, B = diols, viz. ethane diol, propane- 1,2-diol, butan-l,3-diol, 2-butene-1,4-diol, pentane-2,4-diol and hexane-1,6-diol) were determined by potentiometric method. The diff...

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Autores principales:	GESAWAT,ANWAR A, AHMED,MUSA A, SHAKEEL,FAIYAZ
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2010
Materias:	Solution study ternary complexes stability constant nickel(II) histidine, diols
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072010000300005
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spelling	oai:scielo:S0717-970720100003000052011-01-25SOLUTION STUDY OF TERNARY COMPLEXES OF NICKEL(II) CONTAINING HISTIDINE AND DIOLSGESAWAT,ANWAR AAHMED,MUSA ASHAKEEL,FAIYAZ Solution study ternary complexes stability constant nickel(II) histidine, diols The stability constants of the mixed ligand ternary complexes of nickel(II) of the type MAB, MA2B and MAB2 (where A = histidine, B = diols, viz. ethane diol, propane- 1,2-diol, butan-l,3-diol, 2-butene-1,4-diol, pentane-2,4-diol and hexane-1,6-diol) were determined by potentiometric method. The difference in the stability constants of binary and ternary complexes (AlogK) and total enhancement of stability due to mixed ligand complex formation (log X) were of greater magnitude in MA2B systems than those in MAB2 systems. This appeared to be due to the greater number of nitrogen atoms coordinating to metal ion in the MA2B species. Some changes in the stability constants nave been found to be due to the variation in the size of the ring formedby diols. The stability of 2-Butene-1,4-diol containing species exhibited the highest stability in this series. It was concluded that the íi-system of the ligands is important for such a great increase in stability.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.55 n.3 20102010-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072010000300005en10.4067/S0717-97072010000300005
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Solution study ternary complexes stability constant nickel(II) histidine, diols
spellingShingle	Solution study ternary complexes stability constant nickel(II) histidine, diols GESAWAT,ANWAR A AHMED,MUSA A SHAKEEL,FAIYAZ SOLUTION STUDY OF TERNARY COMPLEXES OF NICKEL(II) CONTAINING HISTIDINE AND DIOLS
description	The stability constants of the mixed ligand ternary complexes of nickel(II) of the type MAB, MA2B and MAB2 (where A = histidine, B = diols, viz. ethane diol, propane- 1,2-diol, butan-l,3-diol, 2-butene-1,4-diol, pentane-2,4-diol and hexane-1,6-diol) were determined by potentiometric method. The difference in the stability constants of binary and ternary complexes (AlogK) and total enhancement of stability due to mixed ligand complex formation (log X) were of greater magnitude in MA2B systems than those in MAB2 systems. This appeared to be due to the greater number of nitrogen atoms coordinating to metal ion in the MA2B species. Some changes in the stability constants nave been found to be due to the variation in the size of the ring formedby diols. The stability of 2-Butene-1,4-diol containing species exhibited the highest stability in this series. It was concluded that the íi-system of the ligands is important for such a great increase in stability.
author	GESAWAT,ANWAR A AHMED,MUSA A SHAKEEL,FAIYAZ
author_facet	GESAWAT,ANWAR A AHMED,MUSA A SHAKEEL,FAIYAZ
author_sort	GESAWAT,ANWAR A
title	SOLUTION STUDY OF TERNARY COMPLEXES OF NICKEL(II) CONTAINING HISTIDINE AND DIOLS
title_short	SOLUTION STUDY OF TERNARY COMPLEXES OF NICKEL(II) CONTAINING HISTIDINE AND DIOLS
title_full	SOLUTION STUDY OF TERNARY COMPLEXES OF NICKEL(II) CONTAINING HISTIDINE AND DIOLS
title_fullStr	SOLUTION STUDY OF TERNARY COMPLEXES OF NICKEL(II) CONTAINING HISTIDINE AND DIOLS
title_full_unstemmed	SOLUTION STUDY OF TERNARY COMPLEXES OF NICKEL(II) CONTAINING HISTIDINE AND DIOLS
title_sort	solution study of ternary complexes of nickel(ii) containing histidine and diols
publisher	Sociedad Chilena de Química
publishDate	2010
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072010000300005
work_keys_str_mv	AT gesawatanwara solutionstudyofternarycomplexesofnickeliicontaininghistidineanddiols AT ahmedmusaa solutionstudyofternarycomplexesofnickeliicontaininghistidineanddiols AT shakeelfaiyaz solutionstudyofternarycomplexesofnickeliicontaininghistidineanddiols
_version_	1718445430758440960

SOLUTION STUDY OF TERNARY COMPLEXES OF NICKEL(II) CONTAINING HISTIDINE AND DIOLS

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