Acta Crystallographica Section C

Crystal Structure Communications

Volume 60, Part 11 (November 2004)

tr1099 scheme

Acta Cryst. (2004). C60, o824-o826 [doi:10.1107/S0108270104024217]

Two new polymorphs of diphenyl(4-pyridyl)methyl methacrylate

G. Gobius du Sart, G. O. R. Alberda van Ekenstein, A. Meetsma and G. Ten Brinke

Abstract: The title compound (D4PyMA), C₂₂H₁₉NO₂, exhibits polymorphism after crystallization by slow evaporation from a binary mixture of chloroform and hexane. Long needle-like crystals have an orthorhombic structure (space group Fdd2), with one molecule in the asymmetric unit, while small tablet-like crystals exhibit a monoclinic crystal structure (space group P2₁/n), in which two independent but chemically identical molecules comprise the asymmetric unit. The bond lengths and angles are normal, while the torsion angles around the -C-O- bond linking the diphenyl(4-pyridyl)methyl and methacrylate groups show the flexibility of the molecule by way of packing effects. The two polymorphs both contain weak C-H [bold pi] and C-HO/N contacts but have different conformations.

Formula: C₂₂H₁₉NO₂

Online 22 October 2004


	Structure factor file (CIF format) (298.7 kbytes) Contains datablock I

	Structure factor file (CIF format) (96.0 kbytes) Contains datablock II

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