The title compound, C12H16Cl4, is a derivative of the natural product 1-isopropyl-4-methyl-cyclo-hexa-1,4-diene, and represents a diastereomer with two trans-fused cyclo-propane rings. Both enanti-omers are present in the non-centrosymmetric polar space group Pna21. The central cyclo-hexane ring is planar within 0.02 (1) Å. The C atoms of di-chloro-methyl-ene groups deviate from this plane by 1...

In the title mol-ecule, C(13)H(16)O(6), the cyclo-hexa-1,4-diene ring adopts a flat boat conformation (r.m.s. deviation from planarity = 0.060 Å) and the five-membered tetra-hydro-furan ring adopts an envelope conformation with the carboxyl group-substituted C atom as the flap. The dihedral angle at the spiro junction is 89.1 (1)°. In the crystal, mol-ecules are linked through weak C-H⋯O and va...

The title compound, C48H75B3Cl6O3, was synthesized in two steps from β-himachalene (3,5,5,9-tetra-methyl-2,4a,5,6,7,8-hexa-hydro-1H-benzo-cyclo-hept-ene), which was isolated from the essential oil of the Atlas cedar (Cedrus Atlantica). The mol-ecule consists of an almost planar cyclo-triboroxane ring [maximum deviation = 0.036 (2) Å] linked to three identical fused ring systems with different c...

In the title compound, C(12)H(15)ClNO(+)·C(4)H(5)O(6) (-), the cyclo-hexa-none ring adopts a chair conformation. The benzene ring is significantly twisted so that it is in an almost perpendicular position to the C-N bond with a C(Ar)-C(Ar)-C-N torsion angle of -96.5 (5)°. Intermolecular N-H⋯O and O-H⋯O hydrogen bonds are observed in the crystal structure.

In the title mol-ecule, C(22)H(22)O(3), the central cyclo-hexa-none ring adopts an envelope conformation. The two outer aromatic rings form a dihedral angle of 19.3 (2)°. The crystal packing exhibits weak inter-molecular C-H⋯O hydrogen bonds.

In the title mol-ecule, C(20)H(16)Cl(2)O, the central cyclo-hexa-none ring adopts an envelope conformation. The two aromatic rings form a dihedral angle of 30.0 (1)°. The crystal packing exhibits weak inter-molecular C-H⋯O hydrogen bonds and short Cl⋯O contacts [3.213 (3) Å].

In the title compound, C(19)H(20)N(2)O(3), the cyclo-hexa-none ring adopts a chair conformation with the amino-methyl group is positioned equatorially. An intra-molecular N-H⋯O hydrogen bond occurs. In the crystal, mol-ecules are linked by N-H⋯O hydrogen bonds.

In the title compound, C(20)H(22)O, the mol-ecule is a meso isomer with the two benzyl groups cis to each other. The central cyclo-hexa-none ring adopts a chair conformation. The mol-ecule lies on a noncrystallographic mirror plane and the dihedral angles of the benzyl groups with respect to the ketone moiety are 88.06 (6) and 89.07 (6)°.

The crystal structure of the title compound, [Fe(C(5)H(5))(C(10)H(12)N(2))]PF(6), consists of a ferrocene-1-methyl-(3-methyl-imidazolium) cation and a hexa-fluorido-phosphate anion. The ferrocenyl rings are skewed by 6.7 (4)° from the ideal eclipsed conformation. The inter-planar angle between the plane of the substituted cyclo-penta-dienyl ring and that of the imidazole ring is 89.9 (4)°. The ...

The cyclo-hexa-none ring in the title compound, C(13)H(16)O(3)S, is in a distorted chair conformation. The intra-molecular S⋯O(carbon-yl) distance is 2.814 (2) Å. Mol-ecules are connected into a two-dimensional array via C-H⋯O contacts involving the carbonyl and sulfinyl O atoms.