21 research outputs found
2,25-Dioxo-27,28-diphenyl-30-oxa-29-thia-3,10,17,24-tetraazapentacyclo[24.2.1.112,15.04,9.018,23]triaconta-5,7,9(4),10,12,14,16,18,20,22,26,28-dodecaene chloroform disolvate
The macrocycle of the title compound, C36H24N4O3S·2CHCl3, contains a rigid framework with the nitrogen and oxygen heteroatoms pointing in towards the center of the macrocyclic cavity. The macrocycle is essentially planar (r.m.s. deviation = 0.027 Å) except for the thiophene ring. The dihedral angle between the thiophene ring plane and the mean plane of the central macrocyclic core including all atoms except sulfur is 21.6 (1)°. Four intramolecular hydrogen bonds occur: two are between the amide hydrogen atoms and the Schiff base nitrogen atoms, while the others are between the amide hydrogen atoms and the sulfur atom of the thiophene. The two solvate chloroform molecules are bound to the carbonyl oxygen atoms of the ligand by weak C—H⋯O hydrogen bonding. In addition, the structure reveals intermolecular Cl⋯Cl close contacts [3.308 (2), 3.404 (2) and 3.280 (2) Å] between the chloroform solvate molecules. In the crystal, the macrocycles form layers parallel to (101), with an interlayer distance of 3.362 (3) Å. This short distance is determined by the stacking interactions between the amide carbonyl and imine fragments of neighboring ligands
N,N′-Bis(2-aminophenyl)-3,4-diphenylthiophene-2,5-dicarboxamide acetonitrile solvate
In the title solvate, C30H24N4O2S·CH3CN, the substituted thiophene possesses approximate Cs(m) intrinsic symmetry, with the mirror plane passing through the S atom and the mid-point of the (Ph)C—C(Ph) bond. Despite the main backbone of the molecule being a long chain of conjugated bonds, it adopts a non-planar conformation due to the presence of various intra- and intermolecular hydrogen bonds. The hydrogen bonds result in twist configurations for both the amido and aminophenyl fragments relative to the central thiophene ring. There are two intramolecular Namine—H⋯O hydrogen bonds within the thiophene-2,5-dicarboxamide molecule that form seven-membered rings. In the crystal, the thiophene-2,5-dicarboxamide molecules form inversion dimers by four amide–amine N—H⋯N hydrogen bonds. The dimers are further linked into layers propagating in (100) both directly (via Namine—H⋯O hydrogen bonds) and through the acetonitrile solvate molecules (via amine–cyano N—H⋯N and CMe—H⋯O interactions)
rac-Ethyl 6-hydroxy-6-methyl-3-oxo-4-phenyl-1,3,4,5,6,7-hexahydrobenzo[c][1,2]oxazole-5-carboxylate
In the title compound, C17H19NO5, the cyclohexene ring is in a half-chair conformation and the isoxazole ring in an envelope conformation with the N atom as the flap. The C atoms in the 4- and 6-positions are of the same absolute configuration, whereas the C atom in the 5-position is of the opposite configuration, i.e. (4S*,5R*,6S*). The methyl fragment of the ethoxycarbonyl group at position 5 is disordered over two sets of sites in a 0.60:0.40 ratio. The crystal packing displays intermolecular N—H⋯O and O—H⋯O hydrogen bonds
rac-5-Acetyl-6-hydroxy-3,6-dimethyl-4-phenyl-2H-4,5,6,7-tetrahydroindazol-1-ium chloride
The structure of the title compound, C17H21N2O2
+·Cl−, is of interest with respect to its biological activity. The title compound comprises an organic cation and a chloride anion in the asymmetric unit. The positive charge is localized in a pyrazole moiety forming a pyrazolium cation. The structure displays intermolecular O—H⋯Cl and N—H⋯Cl hydrogen bonding
1,4-Bis[2-(prop-1-enyl)phenoxy]butane
The molecule of the title compound, C22H26O2, exhibits Ci molecular symmetry with a crystallographic inversion centre at the mid-point of the central C—C bond. A kink in the molecule is defined by the torsion angle of 66.7 (2)° about this central bond of the alkyl bridge
Crystal structure and Hirshfeld surface analysis of 1, 3-bis {2, 2-dichloro-1-[(E)-phenyldiazenyl] ethenyl} benzene
TARAMAWOSWOS:000683699700011TARAMAPUBMEDTARAMASCOPUSIn the molecule of the title compound, C22H14Cl4N4, the central benzene ring makes dihedral angles of 77.03 (9) and 81.42 (9)° with the two approximately planar 2,2-dichloro-1-[(E)-phenyldiazenyl]vinyl groups. In the crystal, molecules are linked by C—H⋯π, C—Cl⋯π, Cl⋯Cl and Cl⋯H interactions, forming a three-dimensional network. The Hirshfeld surface analysis indicates that the most important contributions to the crystal packing are from H⋯H (30.4%), C⋯H/H⋯C (20.4%), Cl⋯H/H⋯Cl (19.4%), Cl⋯Cl (7.8%) and Cl⋯C/C⋯Cl (7.3%) interactions
rac-Ethyl 2-hydroxy-2,7,7-trimethyl-4-(4-nitrophenyl)-5-oxo-3,4,5,6,7,8-hexahydro-2H-chromene-3-carboxylate
The title molecule, C21H25NO7, has four stereogenic centres and crystallized as a racemate. It consists of enantiomeric pairs with the relative configuration rac-(1R*,2S*,3R*). The cyclohexenone ring adopts an envelope conformation; the dimethyl-substituted C atom lies 0.640 (1) Å out of the mean plane formed by the rest of the ring atoms (r.m.s. deviation = 0.016 Å). The oxacyclohexene ring adopts a half-chair conformation, the hydroxy- and carboxyl-substituted C atoms lying −0.336 (1) and 0.419 (1) Å, respectively, out of the mean plane formed by the rest of the ring atoms (r.m.s. deviation = 0.002 Å). In the crystal, O—H...O hydrogen bonds link the molecules into a chain along the c-axis direction
rac-1-[6-Hydroxy-4-(4-methoxyphenyl)-3,6-dimethyl-4,5,6,7-tetrahydro-2H-indazol-5-yl]ethanone
The title compound, C18H22N2O3, represents a (4S,5R,6S)-stereoisomer, crystallizing as a racemate in a centrosymmetric space group. The six-membered aliphatic ring adopts a half-chair conformation, with the hydroxy- and acetyl-substituted C atoms deviating by 0.458 (2) and −0.366 (2) Å, respectively, from the plane defined by other four ring atoms. The pyrazole ring is essentially planar [r.m.s deviation = 0.004 (2) Å]. In the crystal, the molecules are linked into chains along the b axis by N—H...N hydrogen bonds. The chains are linked by O—H...N hydrogen bonds into layers parallel to the bc plane
Crystal structure and Hirshfeld surface analysis of (E)-1-[2,2-dichloro-1-(4-methylphenyl)ethenyl]-2- (4-methoxyphenyl)diazene
TARAMAWOSWOS:000695318000023TARAMAPUBMEDTARAMASCOPUSThe asymmetric unit of the title compound, C16H14Cl2N2O, comprises two
similar molecules, A and B, in which the dihedral angles between the two
aromatic rings are 70.1 (3) and 73.2 (2) , respectively. The crystal structure
features short C—H Cl and C—H O contacts and C—H and van der
Waals interactions. The title compound was refined as a two-component nonmerohedral
twin, BASF 0.1076 (5). The Hirshfeld surface analysis and twodimensional
fingerprint plots show that H H (38.2% for molecule A; 36.0%
for molecule B), Cl H/H Cl (24.6% for molecule A; 26.7% for molecule B)
and C H/H C (20.0% for molecule A; 20.2% for molecule B) interactions
are the most important contributors to the crystal packing
Crystal structure and Hirshfeld surface analysis of (3Z)-7-methoxy-3-(2-phenylhydrazinylidene)-1-benzofuran-2(3H)-one
TARAMAWOSWOS:000695318000012TARAMAPUBMEDTARAMASCOPUSIn the title compound, C15H12N2O3, pairs of molecules are linked into dimers by N—H⋯O hydrogen bonds, forming an R22(12) ring motif, with the dimers stacked along the a axis. These dimers are connected through π–π stacking interactions between the centroids of the benzene and furan rings of their 2,3-dihydro-1-benzofuran ring systems. Furthermore, there exists a C—H⋯π interaction that consolidates the crystal packing. A Hirshfeld surface analysis indicates that the most important contacts are H⋯H (40.7%), O⋯H/H⋯O (24.7%), C⋯H/H⋯C (16.1%) and C⋯C (8.8%)