A critical examination of the interaction between copper(II) and glycylglycyl-L-histidine
- 1 January 1981
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 2,p. 491-494
- https://doi.org/10.1039/dt9810000491
Abstract
The equilibria involved in the copper(II)-glycylglycyl-L-histidine (HL) system have been re-examined by analytical potentiometry in 0.15 mol dm–3 NaCl solution at 25 °C. The species found are MH2L, MHL, ML, MH–1L, MH–2L, MH2L2, MHL2, ML2, MH–1L2, and MH–2L2, with log stability constants 16.72, 11.78, 7.55, 2.68, –1.92, 25.81, 20.64, 16.68, 9.73, and 1.43 respectively. The visible absorptions of the total system have been measured at discrete pH values. The spectroscopic characteristics of the predominant species MH–1L, MH–2L, ML2, MH–1L2, and MH–2L2 are computed. The combined potentiometric–spectroscopic analysis has helped to clarify the system in greater detail.This publication has 10 references indexed in Scilit:
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