Tetrabutylammonium hydrogen properties

Tetrabutylammonium Hydrogen Silicate Synthesis, Chemical, Thermal, and Crystallographic Properties... 

Gerke, H., Gies, H. and F. Liebau (1982) "Tetrabutylammonium Hydrogen Silicate Synthesis Chemical, Thermal and Crystallographie Properties", in J.S. Falcone (ed). Soluble Silicates, ACS Symposium Series, 194, American Chemical Society, Washington D.C., pp. 305-318. 

The hydroxyl groups already present in 2 are, of course, H-bond donors, so that simple esters such as 3 might be expected to have anion-binding properties. Indeed, 3 was found to associate with tetrabutylammonium (TBA) bromide, tosylate, mesylate, and hydrogen phenylphos-phonate in benzene and benzene-hexane mixtures. 

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