The crystal structure of 2,6-diphenyl-4-(2,4,6-triphenyl-1-pyridino) phenol–nitrate–water has been found to belong to the P21/n space group of the monoclinic system, with Z=4, a=12.498(2)Å,b=19.223(4)Å,c=14.025(3)Å, and β=90.25(3)°. The 2,6-diphenyl-4-(2,4,6-triphenyl-1-pyridino) phenol–hydrogen sulphate crystal has a similar structure, with Z=4, a=13.139(3)Å,b=18.926(4)Å,c=13.406(3)Å, and β=92.68(3)°. In the nitric acid complex, two water molecules and two nitrate ions are linked by a network of hydrogen bonds, with each water molecule also accepting a hydrogen bond from the phenolic OH group and each nitrate ion additionally involved in a short C–H…O contact. Similarly in the sulphuric acid complex, two hydrogen sulphate ions form a hydrogen-bonded cyclic dimer, with each hydrogen sulphate ion also accepting a hydrogen bond from the phenolic OH group and additionally involved in a short C–H…O contact. The observed infrared and Raman spectra are in accordance with these structures.