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In the title compound, C23H17N3O3, the terminal benzene rings are oriented at dihedral angles of 3.67 (7), 76.02 (7) and 16.37 (7)° with respect to the central furan ring. In the crystal, molecules are connected via weak C—H
O hydrogen bonds, resulting in a three-dimensional supramolecular array.
O hydrogen bonds, resulting in a three-dimensional supramolecular array.metal-organic compoundsOpen access
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In the crystal of the title compound, [Ni(CO3)(C14H32P2)], the metal center in each of three independent molecules shows slight tetrahedral distortion from ideal square-planar coordination geometry, with angles between the normals to the planes defined by the cis-P—Ni—P and cis-O—Ni—O fragments of 3.92 (17), 0.70 (16) and 2.17 (14)° in the three molecules. In the crystal, there are intermolecular C—HO hydrogen bonds that show a laminar growth in the ab plane.
O hydrogen bonds that show a laminar growth in the ab plane.organic compoundsOpen access
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The title compound, C12H10N2O, a second monoclinic polymorph of (E)-phenyl(pyridin-2-yl)methanone oxime crystallizes in the space group P21/n (Z = 4). The previously reported polymorph [Taga et al. (1990). Acta Cryst. C46, 2241–2243] occurs in the space group C2/c (Z = 8). In the crystal, pairs of bifurcated O—H(N,O) hydrogen bonds link the molecules into inversion dimers. The dimers are linked by C—Hπ interactions, forming a linear arrangement. The dihedral angle between the pyridine and phenyl rings is 67.70 (8)°.
(N,O) hydrogen bonds link the molecules into inversion dimers. The dimers are linked by C—Hπ interactions, forming a linear arrangement. The dihedral angle between the pyridine and phenyl rings is 67.70 (8)°.organic compoundsOpen access
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In the crystal of the title compound, C19H14N4O4, the asymmetric unit consists of two discrete molecules. The C=N bonds in both molecules show an E conformation. The dihedral angles between the C atoms of the 2,4-dinitrobenzene rings and the C=N—N planes are 13.52 (9) and 13.82 (9)° for the two molecules. In the crystal, C—HO hydrogen bonds, mainly between the phenyl ring and the nitro group along the b axis.
O hydrogen bonds, mainly between the phenyl ring and the nitro group along the b axis.organic compoundsOpen access
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The title compound, C16H15NO3, consists of an oxabicycle fused to an N-phenyl-substituted pyrrolidine ring anti to the double bond, affording the exo isomer. In the oxabicycle system, the six-membered ring presents a boat conformation, while the heterocyclic rings show envelope conformations with the O atom projected out of the plane. In the crystal, adjacent molecules are linked via weak C—HO hydrogen bonds, forming chains propagating along the a-axis direction. The chains are linked by C—Hπ interactions, forming two-dimensional networks lying parallel to the ac plane.
O hydrogen bonds, forming chains propagating along the a-axis direction. The chains are linked by C—Hπ interactions, forming two-dimensional networks lying parallel to the ac plane.
