Equilibrium constants of mixed ligand complexes of Cu(II), Co(II) with complexones and some amino acids

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Equilibrium constants of mixed ligand complexes of Cu(II), Co(II) with complexones and some amino acids

Author & Affiliation:

Sandhya Singh

Department of Chemistry K.N. Govt., P.G. Collge, Gyanpur, Sant Ravidas Nagar, Bhadohi (U.P.) (INDIA)

Anuradha Singh

Department of Chemistry K.N. Govt., P.G. College, Gyanpur, Sant Ravidas Nagar, Bhadohi (U.P.) (INDIA)

R.K. Singh

Department of Chemistry K.N. Govt., P.G. College, Gyanpur, Sant Ravidas Nagar, Bhadohi (U.P.) (INDIA)

Keyword:

equilibrium constants

Issue Date:

December 2007

Abstract:

Equilibrium constants (log K (log Kof the ligand complexes of the type MAL, where M = Cu(II) and Co(II) A = IMDA, NTA, EDTA or CDTA and L = α-alanine (α-ala) or ß-alanine (ß-ala), have been determined potentiometrically by Irving-Rossotti approach at 25°C and at an ionic strength, 1=0.2 (mol dm^-3 KNO₃). The observed trends in equilibrium constants are; (i) Cu(II) > Co(II) (ii) α-ala >ß-ala (iii) IMDA>NTA>EDTA>CDTA with respect to metal ions, secondary ligand (L) and primary ligand (A) respectively. The log K₁ values are negative. The equilibrium constants log and log have also been determined and compared with the log values.

Pages:

225-227

ISSN:

2319-8036 (Online) - 0973-3450 (Print)

Source:

Vol.3 - No.2

PDF:

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DOI:

juc

Copy the following to cite this article:

S. Singh; A. Singh; R. Singh, "Equilibrium constants of mixed ligand complexes of Cu(II), Co(II) with complexones and some amino acids", Journal of Ultra Chemistry, Volume 3, Issue 2, Page Number 225-227, 2018

Copy the following to cite this URL:

Available from: http://www.journalofchemistry.org/paper/669/

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