cis-(3R,5R)-3-Bromo-2,2-di­methyl-5-phenyl­tetra­hydro­pyran

The heterocyclic ring in the title compound, C₁₃H₁₇BrO, adopts a ₁C⁴ conformation, with the phenyl and bromo substituents located in equatorial positions.

trans-2,2-Di­methyl-6-phenyl-3,4,5,6-tetra­hydro-2H-pyran-3-ol

The tetra­hydro­pyran ring in the title compound, C₁₃H₁₈O₂, adopts a ₁C⁴ conformation, with the phenyl and the hydroxy substituent located in equatorial positions. Hydro­gen bonding occurs between enantiomers involving the hydroxy H atom and the ether O atom.

2,2-Di­methyl-5-oxo-2,3,4,5-tetra­hydro­furan-3-yl benzoate

The title compound, C₁₃H₁₄O₄, crystallizes as a racemate. The heterocyclic core of the 3S-configured mol­ecule adopts a ₂T³ conformation, whereas a ²T₃ arrangement is found for the 3R enantiomer. The majority of substituents in both stereoisomers are located in axial positions.

trans-Diaqua­dichloro­oxovanadium(IV) bis­[2-(2-pyridylamino)pyridinium] dichloride

The neutral complex trans-[VOCl₂(H₂O)₂] co-crystallizes with di-2-pyridylamine hydro­chloride to provide the title compound, (C₁₀H₁₀N₃)₂[VCl₂O(H₂O)₂]Cl₂. The V-bound aqua ligands form two hydrogen bonds each. The amine functionality of the 2-(2-pyridylamino)pyridinium cation participates as a monovalent donor in the hydrogen bonding. In both instances, inter­stitial Cl^- ions serve as hydrogen-bond acceptors. The three hydrogen bonds that are formed per anion give rise to one-dimensional chains along [100].

4-(4-Chloro­phenyl)-2-(tri­chloro­methyl­sulfanyl)-1,3-thia­zole

In the title compound, C₁₀H₅Cl₄NS₂, the CCl₃ group is displaced by 78.4 (4)° from the thia­zole plane. The torsion angle between the heterocyclic core and the 4-chloro­phenyl substituent is -7.0 (6)°.

Racemic trans-4-phen­ylperhydro­pyran-3-ol

In the title compound, C₁₁H₁₄O₂, the tetra­hydro­pyran ring adopts a ¹C₄ conformation, with the phen­yl and the hydr­oxy substituents located in equatorial positions. Hydrogen bonding occurs in the solid state between hydr­oxy groups to link two mol­ecules of (R,R)-trans-4-phen­ylperhydro­pyran-3-ol and two mol­ecules of the (S,S)-enantiomer to provide tetra­mers.

1,2-Bis[4-(4-chloro­phen­yl)-1,3-thia­zol-2-yl]disulfane

In the title compound, C₁₈H₁₀Cl₂N₂S₄, a 1,2-substituted disulfane, the torsion angle between the p-chloro­phenyl and the 1,3-thia­zole rings is -2.0 (6)° for the group attached to the the first disulfane S atom, and 14.6 (7)° for the substitutent located at the second.

A second polymorph of 1,2-bis­[4-(4-chloro­phen­yl)-1,3-thia­zol-2-yl]disulfane

The asymmetric unit of the title compound, C₁₈H₁₀Cl₂N₂S₄, consists of one full mol­ecule and two half mol­ecules, which are completed by twofold rotation symmetry.