The Complexation of Calcium Ion by Diphosphonates
The complexation of calcium ion (Ca++) by monophosphonates (MP)* and diphosphonates (DP)* has been studied under conditions of physiological pH, temperature and ionic strength by the method of Schubert (1). In this procedure, the competition between the anionic ligand and a cation exchange resin for Ca++ is determined. Thus, with a fixed amount of Ca++, Ca45 and Dowex 50 WX4 resin 5 to 10 increments of DP were added to compete increasingly with the resin for Ca++.
KeywordsMethane Phosphorus EDTA Dichloromethane Azide
Unable to display preview. Download preview PDF.
- 3.Di Stefano, V. and Neuman, W.F., J.Biol.Chem. 200: 759–763 (1953).Google Scholar
- 4.Curry, J.D., Nicholson, D.A. and Quimby, O.T. “Oligophosphonates” in Topics in Phosphorus Chemistry (ed. by E.J. Griffith and M. Grayson) Vol. VII, pp. 37–102, John Wiley and Sons Inc., New York, N.Y., 1972.Google Scholar