Solution Equilibrium Study of Divalent Metal Ions with Phenylpropanoid Derivatives and Acetylcysteine Ligands.

NguyenThi, Bich Thuyen and Santoso, Shella Permatasari and Nguyen, Thuyen Thi Bich and Angkawijaya, Artik Elisa and Nguyen Tran, Phuong Lan and Ju, Yi-Hsu (2016) Solution Equilibrium Study of Divalent Metal Ions with Phenylpropanoid Derivatives and Acetylcysteine Ligands. Chemical and Pharmaceutical Bulletin, 64 (11). pp. 1560-1569. ISSN 00092363, 13475223

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Official URL: https://www.jstage.jst.go.jp/article/cpb/64/11/64_...

Abstract

Solution equilibrium of divalent metal ions (M_Mn2_, Co2_, Ni2_, Cu2_ and Zn2_) with caffeic acid (ligand C) or dihydrocaffeic acid (ligand D) in binary system, and with acetylcysteine (ligand N) in ternary system were investigated at condition similar to human physiological temperature of 310.15 K and ionic strength of 0.15 mol•dm_3 NaCl. Potentiometry technique was used for the determination of formation constant (log β) assisted by spectrophotometry technique. The results indicated the formation of [ML], [MLH], [ML2], [ML2H] in binary species and [MLN], [MNLH], [MNLH2] in ternary species, where L represents ligands C or D. It was found that ligand D formed more stable complexes than that of ligand C, which were affected by the presence of double bond in the carboxylate moiety of ligand C. The speciation diagrams were simulated by HySS and discussed briefly, additionally the tendency of ternary complexes was evaluated from parameters Δlog KM and log X.

Item Type: Article
Uncontrolled Keywords: solution equilibrium; phenylpropanoid complex; caffeic acid; dihydrocaffeic acid; metal complex; acetylcysteine
Subjects: Engineering > Chemical Engineering
Divisions: Journal Publication
Depositing User: F.X. Hadi
Date Deposited: 23 Aug 2018 03:59
Last Modified: 11 Oct 2018 03:58
URI: http://repository.wima.ac.id/id/eprint/16041

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