T. Hseu, Li-Pau Farng, P. Siew
Jun 1, 1978
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0
Influential Citations
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Journal
Journal of The Chinese Chemical Society
Abstract
The interaction between trans-1,2-diaminocyclohexane-N, N, N', N'-tetraacetic acid (H1DCTA or H4Z) and Mn(II) and Ni(II) ions has been investigated. The formation constants of the hydrogen chelates (MHZ−), and of the normal chelates (MZ2−), have been measured at 20, 30 and 40°C, and an ionic strength of 0.10 (KNO3). The former was done by a titration technique and the latter by a mercury indicator electrode method. Enthalpy and entropy changes characterizing the formation of the normal chelates have been calculated at 25°C.