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In the title compound, C40H29N3O3S, the pyran ring adopts a sofa conformation, the thia­zolidine ring adopts a twisted conformation and the pyrrolidine ring adopts an envelope conformation with the N atom as the flap. The pyrazole ring is essentially planar [maximum deviation = 0.002 (2) Å] and forms dihedral angles of 4.8 (1) and 39.0 (1)°, respectively, with the benzene rings attached to the N and C atoms. The acenapthylene ring system is approximately planar [maximum deviation = 0.058 (2) Å] and forms dihedral angles of 85.9 (1) and 48.5 (1)°, respectively, with the pyrollothia­zole and chromene ring systems. The mol­ecular conformation is stabilized by three weak intra­molecular C—H...O hydrogen bonds, which generate one S(8) and two S(6) ring motifs. In the crystal, pairs of C—H...O hydrogen bonds link centrosymmetrically related mol­ecules into dimers, generating R22(14) ring motifs. The crystal packing also features pairs of C—H...π inter­actions, which link the dimers into a supra­molecular chain along the b axis.

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In the title compound, C18H17NO3S, the seven-membered thia­zepine ring adopts a slightly distorted sofa conformation. The dihedral angle between the mean plane of the benzothia­zepine ring system and the benzene ring is 5.9 (1)°. The mol­ecular conformation is stabilized by an intra­molecular C—H...S hydrogen bond, which generates an S(7) ring motif. In the crystal, N—H...O and C—H...O hydrogen bonds link inversion-related mol­ecules into dimers, incorporating R12(6) and R22(8) ring motifs; the acceptor O atom is bifurcated. These dimers are further linked by C—H...O hydrogen bonds, forming supra­molecular tapes running along the a axis. These are connected into the three-dimensional architecture by C—H...π inter­actions.

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In the title compound, C16H11Cl2NOS, the seven-membered thia­zepine ring adopts a distorted twist-boat conformation. The dihedral angle between the mean plane of the benzothia­zepine ring system and the benzene ring is 78.6 (1)°. The mol­ecular conformation is stabilized by a weak intra­molecular C—H...Cl hydrogen bond, which generates an S(5) ring motif. In the crystal, pairs of N—H...O hydrogen bonds link inversion-related mol­ecules into dimers, generating R22(8) ring motifs. The crystal packing also features alternating π–π inter­actions between benzothia­zepine benzene rings [inter-centroid distance = 3.740 (3) Å] and dichloro­benzene rings [inter-centroid distance = 3.882 (3) Å] to consolidate a three-dimensional architecture.
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