Crystal structure of (1R,3S,8R,11R)-11-acetyl-3,7,7-trimethyl-10-oxatricyclo[6.4.0.01,3]dodecan-9-one

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Crystal structure of (1R,3S,8R,11R)-11-acetyl-3,7,7-trimethyl-10-oxatri-cyclo-[6.4.0.0(1,3)]dodecan-9-one.

The title compound, C16H24O3, is built up from three fused rings, a six-membered, a seven-membered and a three-membered ring. The absolute configuration of the title compound was determined as (1R,3S,8R,11R) based on the synthetic pathway. The six-membered ring has an half-chair conformation whereas the seven-membered ring displays a boat conformation. In the cyrstal, C-H⋯O hydrogen bonds build...

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Crystal structure of 3-acetyl-4H-chromen-4-one

In the title compound, C11H8O3, the fused-ring system is almost planar (r.m.s. deviation = 0.020 Å), with the largest deviation from the least-squares plane [0.0462 (17) Å] being for a pyran C atom. The dihedral angle between the plane of the fused-ring system and acetyl plane is 5.149 (16)°. In the crystal, the fused rings are linked by aromatic π-π stacking inter-actions [centroid-centroid di...

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Crystal structure of 1,3,5-trimethyl-2,4-di­nitro­benzene

In the title compound, C9H10N2O4, the planes of the nitro groups subtend dihedral angles of 55.04 (15) and 63.23 (15)° with that of the aromatic ring. These tilts are in opposite senses and the mol-ecule possesses approximate mirror symmetry about a plane normal to the mol-ecule. In the crystal, mol-ecules form stacks in the [100] direction with adjacent mol-ecules related by translation, altho...

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Crystal structure of 3-(2-bromo­phenyl­sulfon­yl)-2,5,7-trimethyl-1-benzo­furan

In the title compound, C17H15BrO3S, the dihedral angle between the planes of the benzo-furan ring system [r.m.s. deviation = 0.016 (2) Å] and the 2-bromo-phenyl ring is 82.93 (6)°. In the crystal, mol-ecules are linked via pairs of C-H⋯π hydrogen bonds and π-π inter-actions between the benzene and furan rings of neighbouring mol-ecules [centroid-centroid distance = 3.881 (2) Å] into inversion-r...

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Crystal structure of 3-(4-bromo­phenyl­sulfon­yl)-2,5,6-trimethyl-1-benzo­furan

In the title compound, C17H15BrO3S, the dihedral angle between the planes of the benzo-furan ring system [r.m.s. deviation = 0.015 (2) Å] and the 4-bromo-phenyl ring is 89.29 (6)°. In the crystal, mol-ecules are linked into a chain along the b-axis direction by C-H⋯π hydrogen bonds and C-Br⋯π [3.626 (1) Å] inter-actions.

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ژورنال

عنوان ژورنال: Acta Crystallographica Section E Crystallographic Communications

سال: 2015

ISSN: 2056-9890

DOI: 10.1107/s2056989015022847