Acta Crystallographica Section C

Crystal Structure Communications

Volume 63, Part 4 (April 2007)

organic compounds

 

2,3,5,6-Tetrakis(phenoxymethyl)pyrazine and 2,3,5,6-tetrakis(phenylsulfanylmethyl)pyrazine

T. Assoumatine, G. Gasser and H. Stoeckli-Evans

Abstract: The title compounds, C₃₂H₂₈N₂O₄, (I), and C₃₂H₂₈N₂S₄, (II), respectively, are tetrasubstituted pyrazines and both possess C_i symmetry. They differ only in the hetero atom (X) of the -CH₂XPh side-arm substituents: X = O in (I) and S in (II). Compound (I) has an overall S-shape with a pair of adjacent -CH₂OPh side arms alternately above and below the plane of the central pyrazine ring. The phenyl rings are inclined to one another by 12.63 (18)° and there is one intramolecular C-HO hydrogen bond involving adjacent -CH₂OPh side arms. In compound (II), adjacent -CH₂SPh side arms point in opposite directions with respect to the pyrazine ring plane, with the phenyl rings inclined at 60.45 (8)°. Both structures have weak C-H intermolecular interactions.

Formula: C₃₂H₂₈N₂O₄ and C₃₂H₂₈N₂S₄

	Structure factor file (CIF format) (117.5 kbytes) [ doi:10.1107/S010827010700710X/ga3041Isup2.hkl ] Contains datablock I
	Structure factor file (CIF format) (184.5 kbytes) [ doi:10.1107/S010827010700710X/ga3041IIsup3.hkl ] Contains datablock II

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