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2,3-Diphenyl-2,3-di-hydro-4H-pyrido[3,2-e][1,3]thia-zin-4-one.

ABSTRACT: In the racemic title compound, C19H14N2OS, the two phenyl substituents on the 1,3-thia-zine ring are almost perpendicular to the pyridine ring which is fused to the thia-zine ring [inter-ring dihedral angles = 87.90?(8) and 85.54?(7)°]. The dihedral angle between the two phenyl rings is 75.11?(7)°. The six-membered thia-zine ring has an envelope conformation with the ortho-related C atom forming the flap. The crystals exhibit face-to-edge aromatic-ring interactions with the nearest C-H?C distance equal to 3.676?(3)?Å.

SUBMITTER: Yennawar HP

PROVIDER: S-EPMC4051078 | biostudies-other | 2014 Jun

REPOSITORIES: biostudies-other

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2,3-Diphenyl-2,3-di-hydro-4H-pyrido[3,2-e][1,3]thia-zin-4-one.

Yennawar Hemant P HP Singh Harnoor H Silverberg Lee J LJ

Acta crystallographica. Section E, Structure reports online 20140503 Pt 6

In the racemic title compound, C19H14N2OS, the two phenyl substituents on the 1,3-thia-zine ring are almost perpendicular to the pyridine ring which is fused to the thia-zine ring [inter-ring dihedral angles = 87.90 (8) and 85.54 (7)°]. The dihedral angle between the two phenyl rings is 75.11 (7)°. The six-membered thia-zine ring has an envelope conformation with the ortho-related C atom forming the flap. The crystals exhibit face-to-edge aromatic-ring interactions with the nearest C-H⋯C distanc ...[more]

PMID: 24940225

Similar Datasets

2,3-Diphenyl-2,3-di-hydro-4H-1,3-benzo-thia-zin-4-one.

Project description:In the title compound, C20H15NOS, the dihedral angle between the phenyl rings is 74.25 (6)°. The six-membered 1,3-thia-zine ring has an envelope conformation with the C atom at the 2-position forming the flap. The crystal structure features weak C-H⋯O inter-actions, which lead to the formation of a tape motif along [110].

| S-EPMC3998534 | biostudies-literature

Crystal structures of two solvated 2-aryl-3-phenyl-2,3-di-hydro-4H-pyrido[3,2-e][1,3]thia-zin-4-ones.

Project description:The synthesis and crystal structures of 2-(4-fluoro-phen-yl)-3-phenyl-2,3-di-hydro-4H-pyrido[3,2-e][1,3]thia-zin-4-one toluene hemisolvate (1), C19H13FN2OS·0.5C7H8, and 2-(4-nitro-phen-yl)-3-phenyl-2,3-di-hydro-4H-pyrido[3,2-e][1,3]thia-zin-4-one iso-propanol 0.25-solvate 0.0625-hydrate (2), C19H13N3O3S·0.25C3H7O·0.0625H2O, are reported. Both are racemic mixtures (centrosymmetric crystal structures) of the individual com-pounds and incorporate solvent mol-ecules in their structures. Compound 2 has four thia-zine mol-ecules in the asymmetric unit. All the thia-zine rings in this study show an envelope pucker, with the C atom bearing the substituted phenyl ring displaced from the other atoms. The phenyl and aryl rings in each of the mol-ecules are roughly orthogonal to each other, with dihedral angles of about 75°. The extended structures of 1 and 2 are consolidated by C-H⋯O and C-H⋯N(π), as well as T-type (C-H⋯π) inter-actions. Parallel aromatic ring inter-actions (π-π stacking) are observed only in 2.

| S-EPMC6829726 | biostudies-literature

2,3-Diphenyl-2,3,5,6-tetra-hydro-4H-1,3-thia-zin-4-one.

Project description:The six-membered thia-zine ring in the title compound, C16H15NOS, adopts a half-chair conformation, with the S atom forming the back of the chair. The base of the chair has a slight twist reflected in the r.m.s. deviation (0.0756 Å) of those five atoms from the plane defined by them. The phenyl substituents are almost perpendicular to each other [dihedral angle 87.06 (9)°]. In the crystal, mol-ecules are linked into chains parallel to the c axis through C-H⋯O inter-actions.

| S-EPMC3998299 | biostudies-literature

Crystal structure of 2,3-diphenyl-2,3-di-hydro-4H-1,3-benzo-thia-zin-4-one 1-oxide.

Project description:In the racemic title compound, C20H15NO2S, the planes of the two phenyl substituents form dihedral angles of 48.97?(15) and 69.26?(15)° with that of the fused benzene ring of the parent benzo-thia-zine ring, while the heterocyclic thia-zine ring exhibits a screw-boat pucker. The O atom on the S atom of the ring is pseudo-axial on the thia-zine ring and trans to the 2-phenyl group. In the crystal, mol-ecules are arranged in layers in the ac plane, the layers being linked across b through inter-molecular C-H?O hydrogen-bonding inter-actions.

| S-EPMC5598846 | biostudies-literature

2-(3-Nitro-phen-yl)-3-phenyl-2,3-di-hydro-4H-1,3-benzo-thia-zin-4-one.

Project description:The title compound, C20H14N2O3S, has three aromatic rings, viz. (i) a phenyl ring, (ii) a 3-nitro-phenyl and (iii) a 1,3-benzo-thia-zine fused-ring system. The dihedral angle between (i) and (ii) is 85.31?(15)°, between (ii) and (iii) is 81.33?(15)° and between (i) and (iii) is 75.73?(15)°. The six-membered 1,3-thia-zine ring has an envelope conformation with the C atom in the 2-position forming the flap. In the crystal, mol-ecules are linked by weak C-H?O inter-actions, forming a three-dimensional network.

| S-EPMC3884335 | biostudies-literature

Crystal structures of two 2,3-diaryl-2,3-di-hydro-4H-1,3-benzo-thia-zin-4-ones.

Project description:The syntheses and crystal structures of 2,3-bis-[3-(tri-fluoro-meth-yl)phen-yl]-2,3-di-hydro-4H-1,3-benzo-thia-zin-4-one (di-m-CF3; C22H13F6NOS) (1) and 2,3-bis-(4-methyl-phen-yl)-2,3-di-hydro-4H-1,3-benzo-thia-zin-4-one (di-p-CH3; C22H19NOS) (2) are reported. Each structure is racemic: the asymmetric unit of 2 consists of two mol-ecules. In both 1 and 2, the six-membered 1,3-thia-zine ring is close to an envelope conformation with the chiral C atom forming the flap. In 1, the 2-aryl group is pseudo-equatorial, while in 2 it is pseudo-axial. In 1, the pendant aryl rings form a V shape with an inter-centroid distance of 3.938?(3)?Å and an acute dihedral angle of 48.3?(2)° between them. Both CF3 groups are disordered over two orientations in 0.687?(19):0.313?(19) and 0.667?(16):0.33?(16) ratios. In each of the independent mol-ecules of 2, the aryl rings are almost orthogonal to each other [dihedral angles = 85.50?(12) and 86.07?(11)°]. In both structures, the chiral C atom and the O atoms participate in C-H?O-type hydrogen bonding between symmetry-related mol-ecules of 1 or the independent enanti-omers in 2, forming chains along the c-axis direction in 1 and the b-axis direction in 2. Additionally, in 1, ?-? contacts of both face-to-face and edge-to-face type, as well as ?-H?O and ?-H?F inter-actions are observed. In 2, a racemic mixture of mol-ecules forms layers in the ac plane linked by weak ?-? and C-H?? inter-actions.

| S-EPMC5947804 | biostudies-other

Crystal structures of three substituted 3-aryl-2-phenyl-2,3-di-hydro-4H-1,3-benzo-thia-zin-4-ones.

Project description:Three ring-substituted 3-aryl analogs of 2-phenyl-2,3-di-hydro-4H-1,3-benzo-thia-zin-4-one, namely 3-(4-meth-oxy-phen-yl)-2-phenyl-4H-1,3-benzo-thia-zin-4-one, C21H17NO2S, (I), 2-phenyl-3-[4-(tri-fluoro-meth-yl)phen-yl]-2,3-di-hydro-4H-1,3-benzo-thia-zin-4-one toluene hemisolvate, C21H14F3NOS·0.5C7H8, (II), and 3-(3-bromo-phen-yl)-2-phenyl-2,3-di-hydro-4H-1,3-benzo-thia-zin-4-one toluene hemisolvate, C20H14BrNOS·0.5C7H8, (III), were synthesized and their crystal structures determined. The hemisolvates differ in that in (II), the asymmetric unit comprises two molecules of the benzo-thia-zinone compound and a toluene solvent mol-ecule, whereas in (III), the unit comprises one benzo-thia-zinone mol-ecule and a half-occupancy toluene solvent mol-ecule. All crystals are of racemic mixtures of the chiral 2-C atom of the thia-zine moiety, which in all structures has a screw-boat puckering, with the puckering amplitude values within the range 0.575-0.603 Å. In all three structures, the benzene plane of the benzo-thia-zine system makes a dihedral angle in the range 78.60 (5) to 98.40 (5)° with the unsubstituted benzene plane and in the range 70.50 (1) to 121.00 (5)° with the substituted benzene plane. The CF3 substituent group in one of the mol-ecules of (II) shows positional disorder, with an occupancy ratio of 0.57 (3):0.43 (3). In the crystals of (I) and (II), weak inter-molecular C-H⋯O inter-actions are present, giving in (I), mol-ecules arranged in a plane parallel to (010), and in (II), chains along a. In addition, all three structures show weak C-H⋯π inter-actions involving various aromatic rings.

| S-EPMC4971851 | biostudies-literature

Crystal structures of 2-(4-nitro-phen-yl)-3-phenyl-2,3-di-hydro-4H-1,3-benzo-thia-zin-4-one and 2-(2-nitro-phen-yl)-3-phenyl-2,3-di-hydro-4H-1,3-benzo-thia-zin-4-one.

Project description:The crystal structures are reported of the isomeric compounds 2-(4-nitro-phen-yl)-3-phenyl-2,3-di-hydro-4H-1,3-benzo-thia-zin-4-one, (I), and 2-(2-nitro-phen-yl)-3-phenyl-2,3-di-hydro-4H-1,3-benzo-thia-zin-4-one, (II), both C20H14N2O3S, being the para-nitro and ortho-nitro forms, respectively, the meta-form of which is known [Yennawar et al. (2013). Acta Cryst. E69, o1679]. The six-membered thia-zone ring fused with a benzene ring displays a screw-boat conformation with a total puckering amplitude of 0.627?(1)?Å in (I), and a near screw-boat conformation with a total puckering amplitude of 0.600?(1)?Å in (II). The dihedral angles between the planes of the substituent nitrophenyl and phenyl and rings with the benzene ring of the parent benzo-thia-zone moiety are 75.93?(5) and 82.61?(5)° [in (I)], and 76.79?(6) and 71.66?(6)° [in (II)]. Weak inter-molecular C-H?O hydrogen-bonding inter-actions between aromatic H-atom donors and both a nitro-O atom and a thia-zone O-atom acceptor in (I) and a thia-zone O atom in (II) are present, forming in (I) a centrosymmetric 22-membered cyclic dimer which is extended through a similar inversion-related 14-membered cyclic hydrogen-bonding association into a zigzag chain structure extending along c. In (II), a single inter-molecular C-H?O hydrogen bond gives a chain structure extending along b. In addition, weak C-H?? inter-actions are present in both structures [minimum C?ring-centroid separations = 3.630?(2) and 3.581?(2)?Å, respectively].

| S-EPMC4438845 | biostudies-other

1',3',3'-Trimethyl-2,3-diphenyl-2,3-di-hydro-isoxazole-5(4H)-spiro-2'-indoline.

Project description:Two diastereoisomers of the title compound, C(25)H(26)N(2)O, have been prepared by cyclo-addition between 1,3,3-trimethyl-2-methyl-eneindoline and C-phenyl-N-phenyl-nitrone. The stereochemistry of the major diastereoisomer, viz. S,R/R,S, is confirmed by the X-ray analysis. The oxazole and the pyrole rings have envelope conformations. The packing is stabilized by weak C-H?? inter-actions involving the phenyl ring attached to the N atom of the oxazole and the phenyl ring of the indole fragment.

| S-EPMC2968171 | biostudies-literature

Crystal structure of the 1:1 adduct of 2,3-diphenyl-3,4,5,6-tetra-hydro-2H-1,3-thia-zin-4-one with tri-phenyl-tin chloride.

Project description:The title adduct, chlorido-(2,3-diphenyl-3,4,5,6-tetra-hydro-2H-1,3-thia-zin-4-one-κO)tri-phenyl-tin, [Sn(C6H5)3Cl(C16H15NOS)], resulted from reaction of 2,3-diphenyl-3,4,5,6-tetra-hydro-2H-1,3-thia-zin-4-one with tri-phenyl-tin chloride. The thia-zine ring has an envelope conformation with the S atom forming the flap. The mol-ecule has five phenyl rings, two of them attached to the thia-zine ring at positions 2 and 3, and three in coordination with the Sn(IV) atom. The three rings of the tri-phenyl-tin group are involved in intra-molecular inter-actions of different types, C-H⋯O, edge-to-face (or T-type) π-π inter-actions with the 3-phenyl ring of the thia-zine, T-type inter-actions with both phenyl rings of the thia-zine etc. On the other hand, all the phenyl rings participate in inter-molecular π-π inter-actions. There is one instance of a 'parallel-displaced'-type inter-action extending continuously along the a-axis direction and seven instances of T-type inter-actions stabilizing the crystal lattice.

| S-EPMC4778843 | biostudies-literature

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