prov:value
| - A particularly preferred solvent is ethanol, and especially absolute ethanol, although other solvents can be employed including acetone, acetonitrile, dichloromethane, N,N-dimethylformamide, ethyl acetate, ethyl ether, 1,1,1,3,3,3-hexafluoroisopropanol, hexane, isoproponal, methanol, tetrahydrofuran, toluene, 2,2,2-trifluoroethanol, and water, or mixtures of the foregoing solvents with water.
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