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The title compound, C28H30N2O3.C9H10O5, is a well known red leuco complex of 2-(6-diethylamino-3-diethyliminio-3H-xanthene-9-yl)benzoate (rhodamine B base abbreviated to RBB: leuco dye) with ethyl gallate (EG: developer). The structure of the complex at room temperature has recently been reported...
In the cystal structure of the title compound, (2-hydroxyethyl)trimethylammonium dihydrogen phosphate, C5H14NO+.H2PO4-, two anions create dimeric structures via two O-HO hydrogen bonds. The hydrogen-bonded dimers are connected by another O-HO hydrogen bond with the hydroxyl groups of the cations,...