RESUMO
The three title compounds, C26H19NO3S, (1), C27H20N2O8S, (2), and C30H19NO3S, (3), are carbazole derivatives, where (1) and (3) are heterocycle-containing carbazoles with a benzo-furan moiety fused to a carbazole unit. In (2), a di-meth-oxy-nitro-phenyl ring is attached to the carbazole moiety. In the three derivatives, a phenyl-sulfonyl group is attached to the N atom of the carbazole unit. Compound (1) crystallizes with two independent mol-ecules in the asymmetric unit (A and B). The carbazole skeleton in the three compounds is essentially planar. In compound (1), the benzene ring of the phenyl-sulfonyl moiety is almost orthogonal to the carbazole moiety, with dihedral angles of 85.42â (9) and 84.52â (9)° in mol-ecules A and B, respectively. The benzene ring of the phenyl-sulfonyl group in compounds (2) and (3) are inclined to the carbazole moiety, making dihedral angles of 70.73â (13) and 81.73â (12)°, respectively. The S atom has a distorted tetra-hedral configuration in all three compounds. In the crystals, C-Hâ¯O hydrogen bonds give rise to R22(12) inversion dimers for compound (1), and to R22(24) inversion dimers and R44(40) ring motifs for compound (2). The crystal packing in (1) also features C-Hâ¯π and π-π inter-actions [shortest inter-centroid distance = 3.684â (1)â Å], leading to supra-molecular three-dimensional aggregation. In the crystal of compound (2), the combination of the various C-Hâ¯O hydrogen bonds leads to the formation of a three-dimensional network. In the crystal of compound (3), mol-ecules are linked by C-Hâ¯O hydrogen bonds, forming chains running parallel to the a axis, and the chains are linked by C-Hâ¯π inter-actions, forming corrugated sheets parallel to the ab plane.
RESUMO
In the asymmetric unit of the title compound, C16H17N3O2S, there are two independent mol-ecules (A and B), which show an E conformation with respect to the C=N bond. An intra-molecular O-Hâ¯N hydrogen bond with an S(6) motif stabilizes the mol-ecular structure. The terminal phenyl and benzene rings are almost orthogonal to each other, the dihedral angle being 87.47â (13)° for mol-ecule A and 89.86â (17)° for mol-ecule B. In the crystal, weak bifurcated N-Hâ¯(O,O) hydrogen bonds link the two independent mol-ecules, forming a supra-molecular chain with a C (2) 1(14)[R (2) 1(5)] motif along the b axis. A weak C-Hâ¯O inter-action is also observed in the chain.
RESUMO
The title compounds, C13H13N3O2S·0.5H2O, (I), and C17H14ClN3OS, (II), are hydrazinecarbo-thio-amide derivatives. Compound (I) crystallizes with two independent mol-ecules (A and B) and a water mol-ecule of crystallization in the asymmetric unit. The chromene moiety is essentially planar in mol-ecules A and B, with maximum deviations of 0.028â (3) and 0.016â (3)â Å, respectively, for the carbonyl C atoms. In (II), the pyran ring of the chromene moiety adopts a screw-boat conformation and the phenyl ring is inclined by 61.18â (9)° to its mean plane. In the crystal of (I), bifurcated N-Hâ¯O and C-Hâ¯O hydrogen bonds link the two independent mol-ecules forming A-B dimers with two R 2 (1)(6) ring motifs, and R 2 (2)(10) and R 2 (2)(14) ring motifs. In addition to these, the water mol-ecule forms tetra-furcated hydrogen bonds which alternately generate R 4 (4)(12) and R 6 (6)(22) graph-set ring motifs. There are also π-π [inter-centroid distances = 3.5648â (14) and 3.6825â (15)â Å] inter-actions present, leading to the formation of columns along the c-axis direction. In the crystal of (II), mol-ecules are linked by pairs of N-Hâ¯S hydrogen bonds, forming inversion dimers with an R 2 (2)(8) ring motif. The dimers are linked by C-Hâ¯π inter-actions, forming ribbons lying parallel to (210).
RESUMO
In the title compound, C17H20ClN3OS, the mean plane of the central thio-urea core makes dihedral angles of 26.56â (9) and 47.62â (12)° with the mean planes of the chromene moiety and the cyclo-hexyl ring, respectively. The cyclo-hexyl ring adopts a chair conformation. The N-H atoms of the thio-urea unit adopt an anti conformation. The chromene group is positioned trans, whereas the cyclo-hexyl ring lies in the cis position to the thione S atom, with respect to the thio-urea C-N bond. In the crystal, mol-ecules are linked by N-Hâ¯S hydrogen bonds, forming inversion dimers enclosing R (2) 2(8) ring motifs. The dimers are linked by C-Hâ¯Cl hydrogen bonds, enclosing R (6) 6(44) ring motifs, forming sheets lying parallel to (010).
RESUMO
In the title compound, C19H13BrN2O5, the spiro furan ring is almost planar with a maximum deviation of 0.034â (2)â Å. The indole unit and the furan ring are normal to each other, making a dihedral angle of 87.82â (8) °. The mol-ecular structure is stabilized by an intra-molecular N-Hâ¯O hydrogen bond, which generates an S(6) ring motif. In the crystal, mol-ecules are linked via pairs of N-Hâ¯O hydrogen bonds, forming inversion dimers enclosing R (2) 2(8) ring motifs.
RESUMO
In the title compound, C19H14N2O5, the spiro junction links an oxindole moeity and a furan ring, which subtend a dihedral angle of 83.49â (6)°. The mol-ecular structure features an N-Hâ¯O hydrogen bond, which generates an S(6) ring motif. The crystal packing is governed by two N-Hâ¯O inter-actions, one of which generates a centrosymmetric R 2 (2)(14) dimer. The other N-Hâ¯O inter-action along with a C-Hâ¯O hydrogen bond contributes to the formation of a C 2 (2)[R 2 (2)(9)] dimeric chain running along the b-axis direction.
RESUMO
The title compound, C(22)H(24)O(5), consists of two substituted benzene rings linked by an ethyl acrylate group. The dihedral angle between the two benzene rings is 58.39â (7)°. The crystal packing is governed by two C-Hâ¯O inter-actions, one of which forms centrosymmetric dimers with a graph-set descriptor of R(2) (2)(18).
RESUMO
In the title compound, C(18)H(14)Cl(2)O(4), the mean planes of the methyl acrylate unit and the phenyl ring of the benzaldehyde are approximately orthogonal to each other, making a dihedral angle of 83.31â (6)°. The O atom of the aldehyde group is displaced significantly from the phenyl ring plane by 0.226â (2)â Å. The methyl acrylate group adopts an E conformation. In the crystal, inversion dimers linked by pairs of C-Hâ¯O hydrogen bonds generate R(2) (2)(24) loops.
RESUMO
In the title compound, C(19)H(18)N(2)O(2), the dihedral angle between the mean planes of the fused chromeno and isoxazole units is 43.71â (7)°. The isoxazole and pyran rings exhibit envelope and half chair conformations, respectively. The crystal packing is stabilized by inter-molecular C-Hâ¯π inter-actions.
RESUMO
In the title compound, C(22)H(18)N(2)O(2), the pyran ring of the chromene unit is fused with an isoxazole ring, which adopts an N-envelope conformation with the N atom lying 1.3291â (14)â Å from the mean plane of the remaining ring atoms [maximum deviation = 0.341â (2)â Å]. The dihedral angle between the isoxazole and chromene units is 43.74â (8)° and that between the iosxazole ring and the naphthalene ring system is 58.82â (8)°. In the crystal, the molecules are linked by weak C-Hâ¯π inter-actions.
RESUMO
The title compound, C(20)H(21)N(3)O(4), crystallizes with two mol-ecules in the asymmetric unit. In both mol-ecules, the pyrrolidine ring adopts an envelope conformation. The crystal structure is stabilized by inter-molecular C-Hâ¯O, N-Hâ¯O and O-Hâ¯O hydrogen bonds.