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(Z)-3-Benzyl-1,5-benzothia-zepin-4(5H)-one.

ABSTRACT: In the crystal structure of the title compound, C(16)H(13)NOS, mol-ecules are linked into cyclic centrosymmetric R(2) (2)(8) dimers via pairs of N-H?O hydrogen bonds. The seven-membered ring adopts a boat conformation.

SUBMITTER: Sabari V

PROVIDER: S-EPMC3414268 | biostudies-literature | 2012 Aug

REPOSITORIES: biostudies-literature

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(Z)-3-Benzyl-1,5-benzothia-zepin-4(5H)-one.

Sabari V V Selvakumar R R Bakthadoss M M Aravindhan S S

Acta crystallographica. Section E, Structure reports online 20120704 Pt 8

In the crystal structure of the title compound, C(16)H(13)NOS, mol-ecules are linked into cyclic centrosymmetric R(2) (2)(8) dimers via pairs of N-H⋯O hydrogen bonds. The seven-membered ring adopts a boat conformation. ...[more]

PMID: 22904801

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3-[(Z)-Benzyl-idene]-2,3-dihydro-1,5-benzothia-zepin-4(5H)-one.

Project description:In the title compound, C(16)H(13)NOS, the seven-membered ring adopts a distorted half-chair conformation. In the crystal, mol-ecules are linked by N-H?O hydrogen bonds, forming chains running along the b axis. The crystal packing is further stabilized by C-H?O inter-actions.

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Project description:In the crystal structure of the title compound, C(16)H(12)ClNOS, the mol-ecules are linked into centrosymmetric R(2) (2)(8) dimers via pairs of N-H?O hydrogen bonds. The seven-membered ring adopts a boat conformation.

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(Z)-3-(4-Chloro-benz-yl)-1,5-benzothia-zepin-4(5H)-one.

Project description:In the title compound, C(16)H(12)ClNOS, the seven-membered thia-zepine ring adopts a distorted twisted boat conformation. The dihedral angle between the least-squares planes of the 1,5-benzothia-zepine ring system and the benzene ring is 50.2 (1)°. In the crystal, pairs of N-H⋯O hydrogen bonds link centrosymmetrically related mol-ecules into dimers, generating R(2) (2)(8) ring motifs. The crystal packing is further stabilized by π-π inter-actions [centroid-centroid distance = 3.763 (2) Å].

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Project description:The title compound, C(20)H(16)N(2)O(4)S, was prepared by introduction of a 2-nitro-benzyl group to 2-(furan-2-yl)-2,3-dihydro-1,5-benzothia-zepin-4(5H)-one via an alkaline-catalysed reaction. The thia-zepine ring adopts a twist-boat conformation. The furan ring is oriented at dihedral angles of 56.75?(14) and 10.82?(14)° with respect to the two benzene rings, while the two benzene rings make a dihedral angle of 62.96?(10)°. Weak inter-molecular C-H?O hydrogen bonds occur in the crystal structure.

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(Z)-3-(2,4-Dichloro-benz-yl)-1,5-benzo-thia-zepin-4(5H)-one.

Project description:In the title compound, C16H11Cl2NOS, the seven-membered thia-zepine ring adopts a distorted twist-boat conformation. The dihedral angle between the mean plane of the benzothia-zepine ring system and the benzene ring is 78.6?(1)°. The mol-ecular conformation is stabilized by a weak intra-molecular 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 mol-ecules into dimers, generating R 2 (2)(8) ring motifs. The crystal packing also features alternating ?-? inter-actions between benzothia-zepine benzene rings [inter-centroid distance = 3.740?(3)?Å] and dichloro-benzene rings [inter-centroid distance = 3.882?(3)?Å] to consolidate a three-dimensional architecture.

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(Z)-3-(2-Meth-oxy-benz-yl)-1,5-benzo-thia-zepin-4(5H)-one.

Project description:In the title compound, C(17)H(15)NO(2)S, the seven-membered thia-zepine ring adopts a distorted twist-boat conformation. The dihedral angle between the mean planes of the benzothia-zepin ring system and the attached benzene ring is 47.7 (1)°. In the crystal, pairs of N-H⋯O hydrogen bonds link inversion-related mol-ecules into dimers, generating R(2) (2)(8) ring motifs. These dimers are further connected into a chain along the a axis by C-H⋯O hydrogen bonds, resulting in R(2) (2)(14) ring motifs. The crystal packing also features C-H⋯π inter-actions.

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(Z)-3-(3,4-Di-meth-oxy-benz-yl)-1,5-benzo-thia-zepin-4(5H)-one.

Project description:In the title compound, C18H17NO3S, the thia-zepine ring adopts a slightly distorted twist-boat conformation. The dihedral angle between the mean plane of the benzo-thia-zepin ring system and the benzene ring is 60.3?(1)°. In the crystal, mol-ecules are linked by two pairs of inversion-related N-H?O and C-H?O hydrogen bonds, generating alternating R 2 (2)(8) and R 2 (2)(6) ring motifs, respectively, in a zigzag supra-molecular chain that runs along the c axis. These chains stack along the a axis via S?C [3.424?(2)?Å] contacts. A three-dimensional supra-molecular network is consolidated by C-H?? and ?-? inter-actions [inter-centroid distance between di-meth-oxy-benzene rings = 3.815?(1)?Å]. The crystal studied was a non-merohedral twin, with a refined value of the minor twin fraction of 0.2477?(6) .

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