Application of Chemometrics and Quantum Chemical Calculations to the Study of Complexation Equilibria Between 1,8-Bis(o-aminophenoxy)-3,6-dioxaoctane and Some Transition and Heavy Metal Ions in Acetonitrile Solution

Shamsipur, M.; Ghavami, R.; Hemmateenejad, B.; Sharghi, H.; Alizadeh, K.; Niknam, K.

Artykuł - szczegóły

Tytuł artykułu

Application of Chemometrics and Quantum Chemical Calculations to the Study of Complexation Equilibria Between 1,8-Bis(o-aminophenoxy)-3,6-dioxaoctane and Some Transition and Heavy Metal Ions in Acetonitrile Solution

Autorzy

Shamsipur M. , Ghavami R. , Hemmateenejad B. , Sharghi H. , Alizadeh K. , Niknam K.

Identyfikatory

Warianty tytułu

Języki publikacji

Abstrakty

Evolutionary factor analysis (EFA) and rank annihilation factor analysis (RAFA) were applied to resolve the two-way equilibrium spectrophotometric data for the determination of stability constants of the complexes of 1,8-bis(o-aminophenoxy)-3,6-dioxaoctane (BOAPD) with Co2+, Ni2+, Cu2+, Zn2+, Cd2+, Pb2+ and Hg2+ ions. The number of component species was determined by factor analysis of the absorbance data and then a hard model between the analytical concentrations of the ligand and metal ions, the equilibrium concentrations of all species present and the corresponding equilibrium constants was written. By knowing the equilibrium constants, the equilibrium concentrations of the species will be calculated at each metal to ligand mole ratio. The values of equilibrium constants were varied iteratively and, at each iteration, the ligand’s in formation (i.e., the equilibrium concentration and spectral in formation) were annihilated from the original data matrix until the rank of the original data matrix was reduced by one. The results revealed that ligand forms ML complexes with Co2+, Ni2+, Cu2+, Zn2+, Cd2+, and Pb2+ and a ML2 adduct with Hg2+ ion. The equilibrium constants, the concentration and spectrum profiles of each complexed species were then calculated. The residual standard deviation (RSD) of the residual matrix after bilinearization of the back ground matrix is regarded as the evaluation function.

Słowa kluczowe

EFA RAFA complexation equilibria spectrophotometry 1,8-bis(o-amino -phenoxy)-3,6-dioxaoctane

Wydawca

Polskie Towarzystwo Chemiczne

Czasopismo

Polish Journal of Chemistry

Rocznik

2008

Tom

Vol. 82, nr 8

Strony

1621--1621

Opis fizyczny

–1638, Bibliogr. 55 poz., rys.

Twórcy

autor

Shamsipur M.

autor

Ghavami R.

autor

Hemmateenejad B.

autor

Sharghi H.

autor

Alizadeh K.

autor

Niknam K.

Department of Chemistry, Razi University, Kermanshah, Iran Tel: +98 21 66908032; Fax: +98 21 66908030, mshamsipur@ya hoo.com

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Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-article-BUJ5-0022-0122