F. Ngah, Emma Izzati Zakariah, Imran Fakhar
Feb 28, 2018
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0
Influential Citations
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Journal
Indonesian Journal of Chemistry
Abstract
A new thiourea compound, 2,2-oxybis(ethyl)-4-(1-naphthyl)-3-thiourea 3 has been synthesized and characterized by using FTIR, 1 H-NMR, 13 C-NMR, and MS spectroscopy. The binding properties of with various cations were also carried out using ‘naked eye’, UV-vis and 1 H-NMR titration experiments. This compound exhibited effective binding for Hg 2+ in the presence of other cations, such as Ag + , Ni 2+ , Sn 2+ , Zn 2+ , Fe 2+ , Cu 2+, and Pb 2+ . Continuous variation titration experiments were conducted in order to determine the binding behavior for Hg 2+ . Stoichiometry of the host and guest binding interactions were also determined using continuous variation titration experiments and plotting molar-ratio curves. Pearson Product moment method was employed to calculate the correlation coefficient, and non-linear regression equation was used to calculate dissociation constant K d . Molar-ratio and binding constant data substantiated the presence of binding sites for the compound 3 .