N′-(3-Fluoro­benzyl­idene)-4-hy­droxy-3-meth­oxy­benzohydrazide methanol monosolvate

In the title compound, C15H13FN2O3·CH3OH, the dihedral angle between the benzene rings of the benzohydrazone mol­ecule is 5.3 (3)°. The C atom of the meth­oxy group is almost coplanar with its attached ring [deviation = 0.017 (2) Å]. The r.m.s. deviation of the 21 non-H atoms of the hydrazone mol­ecule is 0.106 Å. In the crystal, the components are linked by Om—H⋯Oh, Nh—H⋯Om and Oh—H⋯Oh (m = methanol and h = hydrazone) hydrogen bonds, forming (001) layers

2-[(E)-(Dimethylamino)methylene­amino]-N-phenylbenzenesulfonamide. Corrigendum

Corrigendum to Acta Cryst. (2007), E63, o4446

N-(2-{[7-(2-Anilinoeth­oxy)-3,6-dibromo­naphthalen-2-yl]­oxy}eth­yl)aniline

In the title compound, C26H24Br2N2O2, the central naphthalene system carries two Br atoms and two –CH2CH2NHC6H5 substituents. The phenyl rings of the latter residues are inclined at 74.17 (17) and 51.4 (2)° with respect to the naphthalene ring system. Each alkyl chain adopts a fully extended all-cis conformation with respect to the naphthalene and phenyl rings [N—C—C—O torsion angles = 68.6 (4) and 60.5 (4)°]. In the crystal, one of the N—H groups forms bifurcated N—H⋯(Br,O) hydrogen bonds, which link the mol­ecules into inversion-related dimers. The centrosymmetric dimers are aggregated via pairs of C—H⋯π inter­actions into sheets parallel to (110)

7-Hydroxy-1,2,3,4-tetrahydroquinolin-2-one dihydrate

The asymmetric unit of the title compound, C9H9NO2·2H2O, comprises two independent organic molecules and four water molecules of crystallization. The heterocyclic rings are not planar: in one molecule, the C atom bearing the O atom and the adjacent methylene C atom are displaced by 0.320 (3) and 0.677 (3) Å, respectively, from the other eight atoms of the fused ring system. Equivalent values of 0.243 (3) and 0.659 (3) Å apply to the second molecule. In the crystal, the components are linked by N—H...O and O—H...O hydrogen bonds, forming a three-dimensional network

Synthesis of Triptycene-Derived Macrotricyclic Host Containing Two Dibenzo-[18]-crown-6 Moieties and Its Complexation with Paraquat Derivatives: Li⁺-Ion-Controlled Binding and Release of the Guests in the Complexes

A new triptycene-derived macrotricyclic host containing two dibenzo-[18]-crown-6 moieties was synthesized and shown to form 1:1 complexes with paraquat derivatives in solution, in which the guests all thread the central cavity of the host. However, it was interestingly found that, depending on the paraquat derivatives with different functional groups, the host can form stable 1:1 or 1:2 complexes in different complexation modes in the solid state, which is significantly different from those of the macrotricyclic host containing two dibenzo-[24]-crown-8 moieties. The formation of the complexes was also proved by the ESI MS and electrochemical experiments. Moreover, it was found that the binding and release of the guests in the complexes could be easily controlled by the addition and removal of lithium ions

Synthesis of Triptycene-Derived Macrotricyclic Host Containing Two Dibenzo-[18]-crown-6 Moieties and Its Complexation with Paraquat Derivatives: Li⁺-Ion-Controlled Binding and Release of the Guests in the Complexes

A new triptycene-derived macrotricyclic host containing two dibenzo-[18]-crown-6 moieties was synthesized and shown to form 1:1 complexes with paraquat derivatives in solution, in which the guests all thread the central cavity of the host. However, it was interestingly found that, depending on the paraquat derivatives with different functional groups, the host can form stable 1:1 or 1:2 complexes in different complexation modes in the solid state, which is significantly different from those of the macrotricyclic host containing two dibenzo-[24]-crown-8 moieties. The formation of the complexes was also proved by the ESI MS and electrochemical experiments. Moreover, it was found that the binding and release of the guests in the complexes could be easily controlled by the addition and removal of lithium ions

Synthesis of Triptycene-Derived Macrotricyclic Host Containing Two Dibenzo-[18]-crown-6 Moieties and Its Complexation with Paraquat Derivatives: Li⁺-Ion-Controlled Binding and Release of the Guests in the Complexes

A new triptycene-derived macrotricyclic host containing two dibenzo-[18]-crown-6 moieties was synthesized and shown to form 1:1 complexes with paraquat derivatives in solution, in which the guests all thread the central cavity of the host. However, it was interestingly found that, depending on the paraquat derivatives with different functional groups, the host can form stable 1:1 or 1:2 complexes in different complexation modes in the solid state, which is significantly different from those of the macrotricyclic host containing two dibenzo-[24]-crown-8 moieties. The formation of the complexes was also proved by the ESI MS and electrochemical experiments. Moreover, it was found that the binding and release of the guests in the complexes could be easily controlled by the addition and removal of lithium ions