The title compound, C(16)H(18)N(2)S(2), lies about an inversion center with only half of the mol-ecule in the asymmetric unit. The cyclo-hexane ring adopts a chair conformation, and the terminal thio-phene rings are in a transoid orientation, with an S⋯S separation between the two terminal 2-thio-phene rings of 11.6733 (9) Å.

In the title compound, C(24)H(26)FN(3)O(4), the two aromatic rings form a dihedral angle of 88.81 (15)°. The cyclo-hexane ring adopts a chair conformation and the five-membered ring is essentially planar, with a maximum deviation from planarity of 0.041 (2) Å. The crystal structure displays inter-molecular C-H⋯O and N-H⋯O hydrogen bonds.

The title compound, C(21)H(33)NO, crystallizes with three independent mol-ecules in the asymmetric unit. The cyclo-hexane and piperidine rings adopt chair conformations. The crystal packing is stabilized by inter-molecular O-H⋯N and C-H⋯O hydrogen bonds, and by weak π-π stacking inter-actions [centroid-centroid distance = 3.876 (2) Å].

In the title compound, C(16)H(21)BrO(2), the cyclo-hexane ring is in a chair conformation and its least-squares plane is at an angle of 61.3 (9)° to the benzene ring. The crystal packing is stabilized by weak π-π stacking inter-actions [centroid-centroid distance = 3.697 (9) Å] between the bromo-meth-oxy-phenyl rings of neighbouring mol-ecules.

In the title compound, C(14)H(19)I, the cyclo-hexane ring adopts a chair conformation and the substituents are in equatorial sites. The dihedral angle between the mean planes of the cyclo-hexane and benzene rings is 67.23 (13)°.

In the crystal structure of the title compound, C(18)H(25)NO, mol-ecules are linked via O-H⋯N hydrogen bonds, forming chains parallel to the c axis. Additional weak N-H⋯O inter-actions stabilize the crystal packing. The adamantane cage consists of three fused cyclo-hexane rings in almost ideal chair conformations, with C-C-C angles in the range 107.9 (10)-111.3 (11)°.

In the title compound, C(21)H(28)O(3)S, the benzofuran unit is essentially planar, with a mean deviation of 0.016 (1) Å from the least-squares plane defined by the nine constituent atoms. Both cyclo-hexane rings adopt chair conformations.

The title compound, C(26)H(28)O(4), lies about a crystallographic twofold rotation axis. The cyclo-hexane rings adopt a chair conformation. The two benzene rings form a dihedral angle of 40.82 (3)°. No significant intra- or inter-molecular inter-actions are observed in the crystal structure.

The synthesis and characterization of a shape-persistent macrocycle, consisting of alternating electron rich and electron poor sub-units as a self-complementary recognition pattern, is reported, and its increased tendency to form dimer complexes in solution is demonstrated and discussed.

The two oxazolidine rings (A and B) of the title compound, C34H44N2O4, display roughly half-chair conformations, which could be described as twisted on the C-O bond. Together, the fused oxazolidine rings have a butterfly shape, with the H atoms attached to the ring junction C atoms in a cis orientation. The cyclo-hexane rings of both p-menthone fragments display chair conformations. The absolut...