Santoso, Shella Permatasari, Angkawijaya, Artiklisa, Ismadji, Suryadi, Ayucitra, Aning, Soetaredjo, Felycia Edi, Tran, Nguyen Phuong Lan and Ju, Yi-Hsu (2016) Complext Formation Study of Binary and Ternary Complexes Including 2,3-Dihydroxybenzoic Acid, N-acetylcysteine and Divalent Metal Ions. JOURNAL OF SOLUTION CHEMISTRY, 45 (4). 518 -533. ISSN 0095-9782 (print version); ISSN: 1572-8927 (electronic version)
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Abstract
The binary and ternary complex stability constants between 2,3-dihydroxy-benzoic acid (DA) and N - acetylcysteine (Nac) with the divalent metal ions (M) Mn2?, Co2? ,Ni2?,Cu2? and Zn2? were studied in aqueous solution at 310.15 K and an ionic medium of 0.15 mol dm-3 NaCl. The complexes’ stability constants (log10b), refined from the potentiometric data using the Hyperquad2008 program, indicate that the ternary complexes are more stable than the binary complexes. The stability constants were supported by additional computation, refined from the spectrophotometric data using the Hypspec program. The values of the ternary complex stability relative to their binary complex (Dlog10K) and the disproportionation constant (log10X) indicate that formation of ternary complex species [M(DA)(Nac)]3-is more favorable than that of species formed by two identical ligands, [M(DA)2]4-or [M(Nac)2]2-. For the investigated M, the stability of complexes follows the trend Cu2?[Zn2?[Ni2?[Co2?[Mn2?.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Stability constant Potentiometry N-acetylcysteine 2,3-dihydroxybenzoic acid Divalent metal |
| Subjects: | Engineering > Chemical Engineering |
| Divisions: | Faculty of Engineering > Chemical Engineering Study Program |
| Depositing User: | Felycia Edi Soetaredjo |
| Date Deposited: | 17 Jul 2017 08:19 |
| Last Modified: | 11 Oct 2018 03:52 |
| URI: | http://repository.ukwms.ac.id/id/eprint/11038 |
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