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Determination of acid dissociation constants of 4-(2′-benzimidazolyl) -3-thiabutanoic acid and related compounds and stability constants of their divalent metal complexes with copper, nickel, and zinc

Lookup NU author(s): Emeritus Professor Arthur Covington

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Abstract

The acid dissociation constants (Ka) of 4-(2′- benzimidazolyl)-3-thiabutanoic acid and related substances were determined by potentiometric titration in 0.1 mol dm-3 (CH3) 4NCl at 25° C. pKa values found were 3.33, 5.46, and 11.32. Stability constants were found for ML2, MHL2, MH3L2, MH4L2, MH-1L 2, MH-2L2 complexes for copper, nickel, and zinc. © 2005 American Chemical Society.

Publication metadata

Author(s): Sari H, Covington AK

Publication type: Article

Publication status: Published

Journal: Journal of Chemical and Engineering Data

Year: 2005

Volume: 50

Issue: 4

Pages: 1425-1429

ISSN (print): 0021-9568

ISSN (electronic): 1520-5134

Publisher: American Chemical Society

URL: http://dx.doi.org/10.1021/je050091l

DOI: 10.1021/je050091l

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