Acta Crystallographica Section C

Crystal Structure Communications

Volume 60, Part 9 (September 2004)

sk1750 scheme

Acta Cryst. (2004). C60, o682-o685 [doi:10.1107/S0108270104017342]

Orthorhombic and monoclinic polymorphs of 1,3,5-triphenylperhydro-1,3,5-triazine-2,4,6-trione at 120 K: chains and sheets formed by C-H(arene) hydrogen bonds

M. B. Mariyatra, K. Panchanatheswaran, J. N. Low and C. Glidewell

Abstract: The title compound, C₂₁H₁₅N₃O₃, crystallizes in two polymorphic forms. In the orthorhombic polymorph, (I), in space group Fdd2 with Z' = 1, the molecules lie in general positions, while in the monoclinic polymorph, (II), in space group C2/c with Z' = ${1 \over 2}$ , the molecules lie across twofold rotation axes. In each polymorph, the molecules are linked by a single C-H [bold pi] (arene) hydrogen bond, forming chains in polymorph (I) and sheets in (II).

Formula: Two polymorphs of C₂₁H₁₅N₃O₃

Online 21 August 2004


	Structure factor file (CIF format) (101.9 kbytes) Contains datablock I

	Structure factor file (CIF format) (95.0 kbytes) Contains datablock II

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