Structural study of 5-methoxyfuro[3,2-e]imidazo[1,2-c]pyrimidine |
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Authors: | M. Luisa Quijano,M. Nogueras,A. S nchez,M. Melgarejo,R. L pez,M. Luisa Jimeno,J. N. Low,R. A. Howie,G. Ferguson |
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Affiliation: | M. Luisa Quijano,M. Nogueras,A. Sánchez,M. Melgarejo,R. López,M. Luisa Jimeno,J. N. Low,R. A. Howie,G. Ferguson |
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Abstract: | The nmr and X-ray diffraction data of the novel ring system furo[3,2-e]imidazo[1,2-c]pyrimidine are reported in this paper. The crystal and molecular structure of this compound (C9H7N3O2·1/2H2O) has been solved at room temperature. Crystals are monoclinic in a space group of P2/n with cell constants a = 9.982(8), b = 13.526(9) and c = 13.981(9) Å, β = 107.44(5)°, V = 1800.9 Å3, Z = 8, Dx = 1.462 Mg·m?3. The structure was solved by full matrix least square refinement giving a final R = 0.054 (Rw = 0.069) for 1263 reflections (I>3.0σ(I)). The compound is essentially planar, existing in two slightly structural different forms, A and B. These are held in pairs with symmetry related molecules by hydrogen bonds formed with two water molecules. Then the dimeric units are stacked parallel to the c axis to form the tridimensional packing. |
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