Acta Crystallographica Section C

Crystal Structure Communications

Volume 62, Part 5 (May 2006)

organic compounds

sq3007 scheme

Acta Cryst. (2006). C62, o259-o261 [ doi:10.1107/S0108270106010390 ]

Two polymorphic forms of N-(4-chlorophenyl)-5-[(4-chlorophenyl)aminomethyl]-6-methyl-2-phenylpyrimidin-4-amine

J. Cieplik, J. Pluta, I. Bryndal and T. Lis

Abstract: Two polymorphic forms of the title compound, C₂₄H₂₀Cl₂N₄, were obtained and characterized using X-ray crystal structure analysis. Colourless crystals of polymorph (Ia) were obtained from the oily mother residue. Recrystallization of polymorph (Ia) from an acetone-methanol mixture resulted in pale-yellow crystals of polymorph (Ib). The major feature distinguishing the two polymorphic forms is their interaction modes, and hence their packing arrangements. In the crystal structure of polymorph (Ia), there are N-HN hydrogen bonds and also aromatic [pi] - [pi] stacking interactions between molecules. The molecules of polymorph (Ib) are linked by N-HCl hydrogen bonds only.

Formula: Two polymorphs of C₂₄H₂₀Cl₂N₄


	Structure factor file (CIF format) (241.4 kbytes) [ doi:10.1107/S0108270106010390/sq3007Iasup2.hkl ] Contains datablock Ia

	Structure factor file (CIF format) (247.4 kbytes) [ doi:10.1107/S0108270106010390/sq3007Ibsup3.hkl ] Contains datablock Ib

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