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.

1-Chloro-2,2-dimethyl-1,3-diphenyl­pent-4-ene

The title compound, C₁₉H₂₁Cl, exhibits a symmetrically arranged 1,3-diphenyl-2,2-dimethyl­propyl entity, with a 1-chloro and a 3-vinyl substituent displaced on opposite sides of the plane defined by the three C atoms that bridge the two aromatic subunits.

4-Methyl-2-thio­xo-2,3-di­hydro­thia­zol-3-yl 4-methyl­phenyl carbonate

The p-cresyl substituent is inclined by -69.5 (10)° and the heterocyclic subunit is tilted by 88.4 (7)° with respect to the bridging carbonate functionality in the title compound, C₁₂H₁₁NO₃S₂.

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)°.

5-(4-Methoxy­phenyl)-4-methyl-2-thio­xo-2,3-di­hydro-1,3-thia­zol-3-yl benzoate at 100 K

A Z arrangement of substituents about the carboxyl­ate C-O bond causes a syn positioning of the carbonyl O atom and the heterocyclic part of the title compound, C₁₈H₁₅NO₃S. The carboxyl­ate entity is inclined by -28.1 (3)° to the phenyl group. The planes of the thia­zol-2(3H)-thione subunit and the carboxyl­ate group are orthogonally arranged.

N-Hydr­oxy-4,5-dimethyl­thia­zole-2(3H)-thione hemihydrate

The geometry of the title compound, C₅H₇NOS₂·0.5H₂O, is characterized by a planar N,S-heterocyclic core that is distorted from a regular penta­gon. Solvent water participates in non-chelated hydrogen bonds and acts as a twofold donor (O—H...S=C) and a twofold acceptor [O...H—O(—N)].

5-(4-Methoxy­phenyl)-4-methyl­thia­zole-2(3H)-thione

The mol­ecules of the title compound, C₁₁H₁₁NOS₂, form hydrogen-bonded dimers in the solid state. The amide H atom serves as hydrogen-bond donor and the thio­carbonyl S atom of a neighbouring mol­ecule serves as acceptor. The p-methoxy­phenyl substituent is tilted by 7.3 (5)° from the thia­zole-2(3H)-thione plane.

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.

O-Ethyl S-(3-oxoindan-1-yl) dithio­carbonate

The title compound, C₁₂H₁₂O₂S₂, is a chiral O,S-dialkyl dithio­carbonate. The O-ethyl substituent and the dithio­carbonate functionality form a plane, which is twisted by 60.7 (2)° from the S-(3-oxoindan-1-yl) group.

3-trans-Bromo-5-cis-fluoro-2,6,6-trimethyl-2-phenyl­tetra­hydro­pyran

The title compound, C₁₄H₁₈BrFO, is a hexa­substituted tetra­hydro­pyran with two halogen atoms attached in β and four C substituents in α positions with respect to the ether O atom. The C...C distance [3.183 (7) Å] between the two 1,3-diaxially oriented α-methyl groups falls below the sum of the van der Waals radii. The magnitude of the bond angle at oxygen [122.6 (3)°] and a comparatively small displacement of this atom [0.490 (5) Å] from the mean plane of four C atoms of the tetrahydropyran ring indicate a marked flattening of the heterocyclic ring in its ¹C₄ conformation.

O-Ethyl S-[1-(3,4-dimethoxy­phen­yl)-2-(hydroxyimino)­prop­yl] dithio­carbonate

The stereogenic centre in the title compound, C₁₄H₁₉NO₄S₂, is substituted with a dithio­carbonate, an ethyl­oximino and a 3,4-dimethoxy­phenyl group, as well as an H atom. Tandem hydrogen-bonding occurs between enantiomers to produce dimers, in which the oxime H atom serves as donor toward the oxime N atom of an adjacent mol­ecule.

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.