Three unique diastereoisomers of 2,3,4,5-tetrafluorohexane have been prepared, compounds intermediate between hexane and perfluorohexane in their degree of fluorination, and they show very different conformational behaviour and physical properties.

In the crystal structure of the title compound, C(21)H(24)F(2)N(2)O(2), the two N atoms of the imidazolidine moiety are linked to the hy-droxy groups by intra-molecular O-H⋯N hydrogen-bonding inter-actions. The crystal studied was a racemic mixture of RR and SS enatiomers. The cyclo-hexane ring adopts a chair conformation and the imidazolidine group to which it is fused has a twisted envelope c...

In the title compound, [Pd(C(37)H(55)P(2)Si)Cl], the Pd atom has a distorted square-planar geometry. The two five-membered rings adopt envelope conformations, while the four cyclo-hexane rings have chair conformations. The two planar aromatic rings are oriented at a dihedral angle of 28.79 (3)°.

The title mol-ecule, C(16)H(15)BrO(4), was prepared by the reaction of (R)-2,4-dioxo-1,5-dioxaspiro-[5.5]undecane and 4-bromo-benzaldehyde with ethanol. The 1,3-dioxane ring exhibits a distorted boat and the fused cyclo-hexane ring exhibits a chair conformation.

The title compound, C(19)H(26)N(2)O(3), crystallizes with two independent mol-ecules in the asymmetric unit which differ in the twist of the phenyl rings with respect to the plane of the amide group [the C-C-C-O torsion angles are 121.5 (3) and -119.6 (3)° in the two mol-ecules. Both cyclo-hexane rings adopt chair conformations. In the crystal, weak C-H⋯O inter-actions occur. The crystal studie...

The molecule of the title compound, C(8)H(18)N(2), possesses C(2) symmetry. Owing to its stereochemistry, it is used in the synthesis of chiral ligands and metal complexes for asymmetric synthesis. The cyclo-hexane ring shows a chair conformation with the amino groups in equatorial positions. Contrary to the literature, the title compound is not a liquid, but a crystalline solid at room tempera...

The title compound, C(32)H(36)Br(2)O(2), was prepared by the reaction of 6-bromo-1-(2-bromo-6-hydroxy-naphthalen-5-yl)-naphthalen-2-ol and 1-iodo-hexane. The dihedral angle between the naphthalene ring planes is 63.8 (9)° The crystal structure may be stabilized by two very weak π-π inter-actions involving the six-membered rings, with centroid-centroid distances of 4.012 (4) and 4.010 (4) Å. The...

In the title compound, C(24)H(28)N(2)O(4), the dioxalane ring has an envelope conformation. The cyclo-hexane ring adopts a chair conformation. The dihedral angle between the benzene rings is 72.5 (3)°. The mol-ecular conformation is stabilized by two intra-molecular O-H⋯N hydrogen-bonding inter-actions with an S(6) graph-set motif. The crystal structure is stabilized by van der Waals inter-acti...

The structure of the title compound, C(26)H(28)N(2)O(2), contains essentially planar quinoline and benzene rings, the maximum deviations from the best plane being 0.086 (2) and 0.0056 (19) Å, respectively; the dihedral angle between the rings is 82.87 (4)°. The adamantane cage consists of three fused cyclo-hexane rings in classical chair conformations, with C-C-C angles in the range 107.85 (15)...

The asymmetric unit of the title compound, C(20)H(22)N(2)O(4), comprises two crystallographically independent mol-ecules (A and B) with slightly different geometries. The dihedral angle between the two terminal phenyl rings is 61.7 (1)° in mol-ecule A and 29.6 (1)° in B. The cyclo-hexane rings adopt chair conformations. In the crystal packing, inter-molecular N-H⋯O hydrogen bonds inter-connect ...