Sevim Türktekin Çelikesir

Crystal structure of (E)-N-(3,4-di-meth-oxy-benzyl-idene)morpholin-4-amine.

In the title compound, C13H18N2O3, the benzene ring makes a dihedral angle of 17.19 (11)° with the least-squares plane formed by the four C atoms of the morpholine ring, which adopts a chair conformation. In the crystal, C—H⋯N hydrogen bonds link the molecules into supramolecular chains running along a 21 screw axis parallel to the b-axis direction. Weak C—H⋯π interactions are also observed.

5-Fluoro-N′-(4-methyl­cyclo­hexyl­idene)-3-phenyl-1H-indole-2-carbohydrazide

The title compound, C22H22FN3O, crystallized with two independent molecules (A and B) in the asymmetric unit; these are linked by a pair of N—H⋯O hydrogen bonds, forming a pseudo-centrosymmetric dimer with an R 2 2(10) motif. In addition, a number of C—H⋯π interactions are also observed. The 1H-indole ring systems in molecules A and B are essentially planar [maximum deviations of 0.019 (2) and 0.014 (2) Å, respectively] and make dihedral angles of 77.64 (10) and 69.50 (9)°, respectively, with thephenyl rings.

5-Fluoro-3-phenyl-N'-(4-propyl-cyclo-hexyl-idene)-1H-indole-2-carbohydrazide.

In the title compound, C24H26FN3O, the cyclohexane ring adopts a chair conformation; the propyl substituent is in an equatorial orientation and the bond-angle sum at the C atom bonded to the carbohydrazide N atom is 360.0°. The dihedral angle between the 1H-indole ring system and the phenyl ring is 82.77 (13)°. A weak intramolecular C—H⋯π contact occurs. In the crystal, pairs of molecules related by a crystallographic twofold axis are linked by bifurcated N—H⋯(O,N) hydrogen bonds; a C—H⋯O interaction occurs between the same pair. The dimers are linked by C—H⋯F and C—H⋯π interactions, generating a three-dimensional network.

Crystal structure of 1,3-bis­(4-methyl­benz­yl)-1H-1,3-benzimidazol-3-ium bromide monohydrate

In the title hydrated symetrically substituted 1,3-bis(4-methylbenzyl)benzimidazolium salt, C23H23N2 +·Br−·H2O, the dihedral angles between the benzimidazole ring system (r.m.s. deviation = 0.003 Å) and the pendant benzene rings are 73.18 (16) and 77.52 (16)°. Both benzene rings lie to the same side of the benzimidazole ring system, giving the cation an overall U-shape. In the crystal, the cation is linked to the water molecule by a short C—H⋯O hydrogen bond and the water molecule forms O—H⋯Br hydrogen bonds. Together, these interactions lead to [010] chains. The packing is consolidated by C—H⋯Br hydrogen bonds and aromatic π–π stacking interactions [centroid–centroid distances = 3.5401 (17) and 3.8815 (18) Å], generating a three-dimensional network.

Crystal structure of 1-(4-meth-oxy-phen-yl)-4-(4-nitro-phen-yl)-3-phen-oxy-azetidin-2-one.

In the title compound, C22H18N2O5, the central β-lactam ring (r.m.s. deviation = 0.002 Å) makes dihedral angles of 64.21 (14), 82.35 (12) and 20.66 (13)° with the phenyl ring and the nitro- and methoxybenzene rings, respectively. The molecular structure is stabilized by an intramolecular C—H⋯O hydrogen bond. In the crystal, molecules are linked via C—H⋯O hydrogen bonds, forming slabs lying parallel to (111). The slabs are linked via C—H⋯π interactions, forming a three-dimensional network.

Crystal structure of 3-(4-chloro­phen­oxy)-4-(2-nitro­phen­yl)azetidin-2-one with an unknown solvate

In the title compound, C15H11ClN2O4, the central β-lactam ring is approximately planar [maximum deviation = 0.044 (2) Å for the N atom from the mean plane] and subtends dihedral angles of 61.17 (11) and 40.21 (12) °, respectively, with the nitro and chlorobenzene rings. Both substituents lie to the same side of the β-lactam core. In the crystal, N—H⋯O hydrogen bonds link the molecules into C(4) chains propagating in [010]. The chains are cross-linked by C—H⋯O and weak C—H⋯π interactions, generating a three-dimensional network. The solvent molecules were found to be highly disordered and their contribution to the scattering was removed with the SQUEEZE procedure in PLATON [Spek (2009 ▸). Acta Cryst. D65, 148–155], which indicated a solvent cavity of volume 318 Å3 containing approximately 114 electrons. These solvent molecules are not considered in the given chemical formula and other crystal data.

Crystal structure of (E)-N-(3,4-di­meth­oxy­benzyl­idene)morpholin-4-amine. Corrigendum

Corrigendum to Acta Cryst. (2014), E70, o935.

Crystal structure of {(E)-4-[(1-allyl-1H-1,2,3-triazol-4-yl)meth-oxy]benzyl-idene}[2-(morpholin-4-yl)eth-yl]amine.

In the title compound, C19H25N5O2, the morpholine ring has a chair conformation. The plane of the central benzene ring makes dihedral angles of 88.75 (12) and 60.02 (7)°, respectively, with the mean plane formed by the four planar C atoms of the morpholine ring and with the plane of the triazole ring. In the crystal, molecules are linked via C—H⋯π interactions, forming slabs lying parallel to (10-1). The C atoms of the bridging ethylene group, between the morpholine and benzene rings, and the terminal ethene group of the prop-1-ene substituent attached to the triazole ring, are disordered over two sets of sites, with an occupancy ratio of 0.634 (13):0.366 (13).

N′-(4-Ethyl­cyclo­hexyl­idene)-5-fluoro-3-phenyl-1H-indole-2-carbohydrazide

The title compound, C23H24FN3O, crystallizes with two independent molecules (I and II) in the asymmetric unit. These pairs of molecules are linked to each other as N—H⋯O dimers with an R 2 2(10) motif. Furthermore, the crystal structure also exhibits C—H⋯π interactions. The atoms of the ethyl group in molecule I are disordered over two sites with an occupancy ratio of 0.817 (6):0.183 (6).

5-Fluoro-N-(2-methyl-3-oxo-1-thia-4-aza­spiro­[4.5]dec-4-yl)-3-phenyl-1H-indole-2-carboxamide

In the title compound, C24H24FN3O2S, the 1,3-thiazolidine ring adopts an envelope conformation with the S atom as the flap, while the cyclohexane ring is in a chair conformation. In the crystal, molecules are linked by N—H⋯O and C—H⋯F hydrogen bonds, forming a three-dimensional network. The unit cell contains six voids of 57 Å3, but the residual electron density (highest peak = 0.23 e Å−3 and deepest hole = −0.19 e Å−3) in the difference Fourier map suggests no solvent molecule occupies this void.