| http://www.w3.org/ns/prov#value | - where M is an alkali metal, preferably sodium, N is another alkali metal, preferably potassium, and Q is a cation derived from the templating agent, preferably a choline cation, a benzyltrimethyl ammonium cation, a benzyltriethyl ammonium cation or a cation derived from 1,4-diazabicyclo (2,2,2) octane.
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