1,3-Bis(2,4,6-triphenylpyrimidin-5-yl)urea-Acetone (1/1) at 133K

The asymmetric unit of the title compound, (C₄₅H₃₂N₆O).(C₃H₆O), consists of two half molecules each of 1,3-bis(2,4,6-triphenylpyrimidin-5-yl)-urea and acetone with all four C=O groups being located on crystallographic twofold rotation axes. Bond lengths and angles are similar in these moieties; differences exist only in the angles between the plane of the heterocycle and the phenyl rings. Each acetone molecule is bonded via N-H...O hydrogen bonds to both N atoms of an adjacent urea moiety (N...O 2.878 (2) and 2.902 (2) Å).

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