Competitive Hydration of Quinazoline at the Montmorillonite-Water Interface

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Science  23 Nov 1973:
Vol. 182, Issue 4114, pp. 819-821
DOI: 10.1126/science.182.4114.819


Ultraviolet spectroscopic analyses of suspensions of quinazoline and Na+-saturated montmorillonite have indicated that covalent hydration of the monovalent organic cation is inhibited at or near the clay surface. A similar lack of hydration was observed in solutions of quinazoline and high-ionic-strength calcium chloride. The inhibition is attributed to a local competition between quinazoline and the inorganic cations for water of hydration.