Spectrophotometric determination of the formation constants of Calcium(II) complexes with 1,2-ethylenediamine, 1,3-propanediamine and 1,4-butanediamine in acetonitrile

In this work, with the purpose to explore the coordination chemistry of calcium complexes which could work as a partial model of manganese–calcium cluster, a spectrophotometric study to evaluate the stability of the complexes: Calcium(II)-1,2-ethylendiamine, Calcium(II)-1,3-propanediamine and Calciu...

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Bibliographic Details
Published in:Green energy & environment 2017-01, Vol.2 (1), p.51-57
Main Authors: González González, Jacqueline, Nájera-Lara, Mónica, López-Ramírez, Varinia, Ramírez-Vázquez, Juan Antonio, Segoviano-Garfias, José J.N.
Format: Article
Language:English
Subjects:
Absorbance molar
Artificial photosynthesis
Calcium(II) complexes
Solution equilibria
Speciation
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Summary:In this work, with the purpose to explore the coordination chemistry of calcium complexes which could work as a partial model of manganese–calcium cluster, a spectrophotometric study to evaluate the stability of the complexes: Calcium(II)-1,2-ethylendiamine, Calcium(II)-1,3-propanediamine and Calcium(II)-1,4-butanediamine in acetonitrile, were carried on. By processing the spectrophotometric data with the HypSpec program allows the determination of the formation constants. The logarithmic values of the formation constants obtained for Calcium(II)-1,2-ethylendiamine, Calcium(II)-1,3-propanediamine and Calcium(II)-1,4-butanediamine were log β110 = 4.69, log β110 = 5.25 and log β110 = 4.072, respectively. [Display omitted]
ISSN:2468-0257
2468-0257
DOI:10.1016/j.gee.2017.01.002