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(2E)-2-[(2H-1,3-Benzodioxol-5-yl)methyl-idene]-2,3-dihydro-1H-inden-1-one.

ABSTRACT: In the title compound, C(17)H(12)O(3), each of the five-membered rings in the inden-1-one and 1,3-benzodioxole residues is almost planar (r.m.s. deviations = 0.041 and 0.033 Å, respectively). A small twist about the single bond linking the two residues is evident [the C-C-C-C torsion angle = 8.7 (4)°]. Supra-molecular zigzag layers propagating in the ac plane are formed in the crystal via C-H⋯O inter-actions. The layers are linked via π-π inter-actions between the five- and six-membered rings of 1,3-benzodioxole residues [centroid-centroid distance = 3.4977 (14) Å].

SUBMITTER: Asiri AM

PROVIDER: S-EPMC3343980 | biostudies-literature |

REPOSITORIES: biostudies-literature

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(2E)-2-(Furan-2-yl-methyl-idene)-2,3-dihydro-1H-inden-1-one.

Project description:In the title compound, C(14)H(10)O(2), the five-membered ring of the inden-1-one residue is almost planar (r.m.s. deviation = 0.035?Å). A twist about the single bond linking the two residues is evident [C-C-C-C torsion angle = -13.2?(5)°]. The three-dimensional architecture is stabilized by C-H?O (involving the trifurcated carbonyl O atom), C-H?? and ?-? inter-actions [between the five- and six-membered rings of inden-1-one residues; ring centroid-centroid distance = 3.7983?(17)?Å]. The sample studied was a non-merohedral twin; the minor component refined to approximately 36%.

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Project description:The title indan-1-one derivative, C(18)H(14)O, is planar with an r.m.s. deviation for all 19 non-H atoms of 0.098?Å. The conformation about each of the C=C bonds [1.343?(3) and 1.349?(3)?Å] is E. Supra-molecular layers in the bc plane, mediated by C-H?O and ?-? [ring centroid-centroid distance = 3.5282?(15)?Å] inter-actions, feature in the crystal packing.

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3-(1,3-Benzodioxol-5-yl)-1-phenyl-2,3-dihydro-1H-naphtho[1,2-e][1,3]oxazine.

Project description:In the title compound, C(25)H(19)NO(3), the oxazine ring displays a half-chair conformation. The fused benzene ring is nearly parallel to the naphthyl ring system, the dihedral angle between this benzene ring and the naphthyl system being 8.52 (11)°. The imino group is not involved in hydrogen bonding in the crystal structure.

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