N-Benzoyl-4-nitro­benzene­sulfonamide monohydrate

In the title compound, C₁₃H₁₀N₂O₅S·H₂O, the dihedral angle between the sulfonyl and benzoyl benzene rings is 83.4 (1)°. In the crystal, the water mol­ecule forms four hydrogen bonds with three different mol­ecules of N-benzoyl-4-nitro­benzene­sulfonamide. One of the H atoms of H₂O forms a bifurcated hydrogen bond with a sulfonyl and the carbonyl O atoms. Mol­ecules are linked into a three-dimensional network by N—H...O and O—H...O hydrogen bonds.

4-Chloro-N-(3-methyl­benzo­yl)benzene­sulfonamide monohydrate

In the title compound, C₁₄H₁₂ClNO₃S·H₂O, the dihedral angle between the sulfonyl and benzoyl benzene rings is 84.4 (2)°. In the crystal, every water mol­ecule forms four hydrogen bonds with three different mol­ecules of 4-chloro-N-(3-methyl­benzo­yl)benzene­sulfonamide. One of the water H atoms forms a bifurcated hydrogen bond with both the sulfonyl and the carbonyl O atoms of the same mol­ecule. Mol­ecules are linked into layers in the ab plane through N—H...O and O—H...O hydrogen bonds.

N-(2-Chloro-5-methyl­phen­yl)succinamic acid

In the title compound, C₁₁H₁₂ClNO₃, the conformation of the N—H bond in the amide segment is syn with respect to the ortho-Cl atom. The amide and carboxyl C=O groups are syn to each other. Furthermore, the C=O and O—H bonds of the carboxyl group are in syn positions with respect to each other. The dihedral angle between the benzene ring and the amide group is 47.8 (2)°. In the crystal, mol­ecules are connected by pairs of O—H...O hydrogen bonds, forming inversion dimers. The dimers are further linked by N—H...O hydrogen bonds into double chains along the b-axis direction.

N-(3-Chloro­benzo­yl)-3-nitro­benzene­sulfonamide

In the title compound, C₁₃H₉ClN₂O₅S, the dihedral angle between the two benzene rings is 83.5 (1)°. In the crystal, mol­ecules are linked via N—H...O(S) hydrogen bonds into helical chains running along the b axis.

N-(2-Chloro­benzo­yl)-2-nitro­benzene­sulfonamide

In the title compound, C₁₃H₉ClN₂O₅S, the dihedral angle between the two rings is 71.2 (1)°. The crystal structure features inversion dimers linked by pairs of N—H...O(S) hydrogen bonds.

N-Benzoyl-2-nitro­benzene­sulfonamide

In the title compound, C₁₃H₁₀N₂O₅S, the N—C bond in the C—SO₂—NH—C segment has gauche torsion angles with respect to the S=O bonds. The conformation between the N—H bond and the ortho-nitro group in the sulfonyl benzene ring is syn. The mol­ecule is twisted at the S—N bond with a torsion angle of −63.4 (2)°. The sulfonyl benzene ring is tilted by 77.1 (1)° relative to the —SO₂—NH—C—O segment. The dihedral angle between the sulfonyl and the benzoyl benzene rings is 88.6 (1)°. In the crystal, pairs of N—H...O(S) hydrogen bonds link the mol­ecules into inversion dimers, which are linked by weak C—H...O and C—H...π inter­actions along the b axis.

N-(3-Methyl­benzo­yl)-2-nitro­benzene­sulfonamide

In the title compound, C₁₄H₁₂N₂O₅S, the conformation between the N—H group and the ortho-nitro group in the sulfonyl benzene ring is syn and that between the C=O and meta-methyl groups in the benzoyl ring is anti. The mol­ecule is twisted at the S—N bond with a torsion angle of 64.3 (2)°. The dihedral angle between the sulfonyl benzene ring and the —SO₂—NH—C—O segment is 75.73 (7)° and that between the sulfonyl and benzoyl benzene rings is 89.5 (1)°. The crystal structure features inversion-related dimers linked by pairs of N—H...O(S) hydrogen bonds.

N-(2-Chloro­benzo­yl)-3-nitro­benzene­sulfonamide

In the mol­ecule of the title compound, C₁₃H₉ClN₂O₅S, the dihedral angle between the two aromatic rings is 84.3 (1)°. In the crystal, mol­ecules are linked into chains via N—H...O(S) hydrogen bonds.

trans-Bis(acetato-κO)bis­(2-amino­ethanol-κ²N,O)nickel(II)

In the title compound, [Ni(CH₃CO₂)₂(C₂H₇NO)₂], the Ni^II cation, located on an inversion center, is N,O-chelated by two 2-amino­ethanol mol­ecules and further coordinated by two monodendate acetate anions in a slightly distorted octa­hedral geometry. The latter is stabilized by intra­molecular O—H...O hydrogen bonds involving the non-coordinated O atom of the acetate and the H atom of the hy­droxy group of the 2-amino­ethanol ligand. In the crystal, N—H...O hydrogen bonds link the mol­ecules into a three-dimensional supra­molecular framework that involves (a) the coordinated acetate O atom and one of the H atoms of the amino group and (b) the non-coordinated acetate O atom and the other H atom of the amino group.

N-(4-Methyl­benzo­yl)-2-nitro­benzene­sulfonamide

The asymmetric unit of the title compound, C₁₄H₁₂N₂O₅S, contains two independent mol­ecules. The dihedral angles between the aromatic rings are 82.03 (9) and 79.47 (8)° in the two independent mol­ecules. In the crystal, the two mol­ecules in the asymmetric unit are linked into dimers via pairs of N—H...O(S) hydrogen bonds to generate C(4) chains.

N-(2-Chloro-4-methyl­phen­yl)succinamic acid

In the title compound, C₁₁H₁₂ClNO₃, the N—C=O fragment is twisted from the plane of the attached benzene ring by 48.39 (12)°. The carb­oxy­lic acid group is involved in O—H...O hydrogen bonding, which links pairs of mol­ecules into centrosymmetric dimers. N—H...O hydrogen bonds link these dimers, related by translation along the a axis, into ribbons.

N-(3-Chloro­benzo­yl)-2-nitro­benzene­sulfonamide

In the title compound, C₁₃H₉ClN₂O₅S, the N—C bond in the C—SO₂—NH—C segment has a gauche torsion with respect to the S=O bonds. The conformation between the N—H bond and the ortho-nitro group in the sulfonyl benzene ring is syn, and that between the C=O and the meta-Cl atom in the benzoyl ring is anti. The mol­ecule is twisted at the S—N bond, with a torsion angle of 65.41 (38)°. The dihedral angle between the sulfonyl benzene ring and the –SO₂—NH—C—O segment is 75.0 (1)°, and that between the sulfonyl and the benzoyl benzene ring is 89.1 (1)°. The crystal structure features inversion-related dimers linked by pairs of N—H...O(S) hydrogen bonds.

N-(4-Methyl-2-nitro­phen­yl)succinamic acid

In the title compound, C₁₁H₁₂N₂O₅, the conformation of the N—H bond in the amide segment is syn to the ortho-nitro group in the benzene ring. The amide C=O and the carboxyl C=O of the acid segment are syn to each other and both are anti to the H atoms on the adjacent –CH₂ groups. Furthermore, the C=O and O—H bonds of the acid group are in syn positions with respect to each other. The dihedral angle between the benzene ring and the amide group is 36.1 (1)°. The amide H atom shows bifurcated intra­molecular hydrogen bonding with an O atom of the ortho-nitro group and an inter­molecular hydrogen bond with the carbonyl O atom of another mol­ecule. In the crystal, the N—H...O(C) hydrogen bonds generate a chain running along the [100] direction. Inversion dimers are formed via a pair of O—H...O(C) interactions, that form an eight-membered hydrogen-bonded ring involving the carboxyl group.

N-(3-Chloro-4-methyl­phen­yl)succinamic acid

In the crystal structure of the title compound, C₁₁H₁₂ClNO₃, the asymmetric unit contains two independent mol­ecules. The N—H bond in the amide segment is anti to the meta-Cl atom in the benzene ring, in both molecules. The amide and carboxyl C=O bonds are also anti to each other and anti to the H atoms on the adjacent –CH₂ groups. Furthermore, the C=O and O—H bonds of the acid group are in syn positions with respect to each other. The dihedral angles between the benzene ring and the amide group are 40.6 (2) and 44.9 (3)° in the two independent molecules. In the crystal, mol­ecules are packed into sheets parallel to the (11-3) plane through O—H...O and N—H...O hydrogen bonds.

N-(4-Chloro-3-nitro­phen­yl)maleamic acid

In the mol­ecule of the title compound, C₁₀H₇ClN₂O₅, the acyclic C=C double bond is cis configured. The C=O and O—H bonds of the acid group are in a relatively rare anti position to each other, due to the donation of intramolecular hydrogen bond to the amide by the carboxyl group. The nitro group is significantly twisted [dihedral angle = 66.9 (3)°] out of the plane of the remaining atoms, which are almost coplanar (r.m.s. deviation for non-H atoms except the nitro group = 0.202 Å). In the crystal, N—H...O hydrogen bonds link the mol­ecules into zigzag chains running along the b axis.

N-(4-Methyl­benzo­yl)-4-nitro­benzene­sulfonamide

In the title compound, C₁₄H₁₂N₂O₅S, the dihedral angle between the nitro­phenyl group and the –S—NH—C—O fragment is 80.74 (17)° and that between the nitro­phenyl and methyl­phenyl groups is 87.66 (14)°. The C—S—N—C torsion angle at the S—N bond is −67.0 (3)°. In the crystal, mol­ecules are linked into C(4) chains via N—H...O hydrogen bonds.

N-(3-Chloro-4-methyl­phen­yl)maleamic acid

In the title compound, C₁₁H₁₀ClNO₃, the dihedral angle between the benzene ring and the amide group is 6.6 (10)° and an intramolecular O—H...O hydrogen bond occurs. In the crystal, molecules are linked by N—H...O hydrogen bonds, generating C(7) zigzag chains.

N-(4-Chloro-3-nitro­phen­yl)succinamic acid

In the title compound, C₁₀H₉ClN₂O₅, the nitro group is significantly twisted out of the plane of the benzene ring to which it is attached [dihedral angle = 27.4 (6)°]. In the crystal, mol­ecules are linked into centrosymmetric dimers via pairs of O—H...O hydrogen bonds. These dimers are further linked by N—H...O hydrogen bonds into double chains running along the a axis.

N-(3-Methyl­benzo­yl)benzene­sulfonamide

The asymmetric unit of the title compound, C₁₄H₁₃NO₃S, contains three independent mol­ecules in which the dihedral angles between the sulfonyl and benzoyl benzene rings are 83.3 (2), 84.4 (2) and 87.6 (2)°. In the crystal, mol­ecules are linked into chains running along the a axis via N—H...O hydrogen bonds.

Potassium N-bromo-2-nitro­benzene­sulfonamidate monohydrate

In the title compound, K⁺·C₆H₄BrN₂O₄S⁻·H₂O, the K⁺ ion is hepta-coordinated by two O atoms from two different water mol­ecules, three sulfonyl O atoms from three N-bromo-2-nitro-benzene­sulfonamidate anions and two nitro O atoms from two N-bromo-2-nitro-benzene­sulfonamidate anions. The S—N distance of 1.576 (4) Å is consistent with an S=N double bond. The crystal structure is stabilized by inter­molecular O—H...N and O—H...Br hydrogen bonds which link the molecules into polymeric layers running parallel to the bc plane.

Potassium N-bromo-2,4-dichloro­benzene­sulfonamidate sesquihydrate

The asymmetric unit of the title salt, K⁺·C₆H₃BrCl₂NO₂S⁻·1.5H₂O, contains one K⁺ cation, one N-bromo-2,4-dichlorobenzenesulfonamidate anion, one water molecule in general position and one water molecule located on a twofold rotation axis. The K⁺ cation is hepta-coordinated by three water O atoms and four sulfonyl O atoms from three symmetry-related N-bromo-2,4-dichloro­benzene­sulfonamide anions. The S=N distance of 1.575 (3) Å is consistent with that of a double bond. In the crystal, the anions are linked by O—H...Br and O—H...N hydrogen bonds into layers parallel to the ac plane.

N-(2-Chloro­benzo­yl)-4-methyl­benzene­sulfonamide

In the title compound, C₁₄H₁₂ClNO₃S, the C=O bond is syn to the Cl substituent in the adjacent benzene ring. The C—S—N—C torsion angle is −80.6 (6)°. The chloro­benzoyl ring is disordered and was refined using a split model [occupancy ratio 0.537 (3):0.463 (3)]. In the crystal, mol­ecules are linked by pairs of N—H...O(S) hydrogen bonds, forming inversion dimers.

N-(3-Nitro­benzo­yl)benzene­sulfonamide

In the title compound, C₁₃H₁₀N₂O₅S, the C=O bond in the —SO₂—NH—CO— segment is anti to the meta-nitro group in the benzoyl ring, while the N—C bond has gauche torsions with respect to the S=O bonds. The molecule is twisted at the N atom with a dihedral angle of 79.9 (2)° between the sulfonyl benzene ring and the —SO₂—NH—CO— segment. Furthermore, the dihedral angle between the benzeneline rings is 86.9 (2)°. In the structure, the mol­ecules are linked into helical chains along the b axis via N—H...O hydrogen bonds.

N-(3-Chloro-2-methyl­phen­yl)succinamic acid

In the title compound, C₁₁H₁₂ClNO₃, the dihedral angle between the benzene ring and the amide group is 44.9 (2)°. In the crystal, mol­ecules form inversion dimers via pairs of O—H...O hydrogen bonds. These dimers are further linked into sheets parallel to (013) via N—H...O hydrogen bonds.

N-(4-Methyl­phenyl­sulfon­yl)succinamic acid

In the crystal structure of the title compound, C₁₁H₁₃NO₅S, the amide C=O and the carboxyl C=O groups of the acid segment orient themselves away from each other. The dihedral angle between the benzene ring and the amide group is 69.0 (2)°. In the crystal, N—H...O and O—H...O hydrogen bonds link the mol­ecules into layers parallel to the bc plane.

N-(4-Chloro-3-methyl­phen­yl)succinamic acid

The title compound, C₁₁H₁₂ClNO₃, crystallizes with two independent mol­ecules in the asymmetric unit in which the dihedral angles between the benzene ring and the amide group are 55.0 (2) and 28.2 (3)°. The two independent mol­ecules are linked by an N—H...O hydrogen bond. In the crystal, mol­ecules form inversion dimers via pairs of O—H...O hydrogen bonds. These dimers are linked into sheets parallel to (11-3) via N—H...O hydrogen bonds.

N,N-Bis(4-chloro­phenyl­sulfon­yl)succinamide dihydrate

The asymmetric unit of the title compound, C₁₆H₁₄Cl₂N₂O₆S₂·2H₂O, contains one half-mol­ecule of N,N-bis­(4-chloro­phenyl­sulfon­yl)succinamide, with a centre of symmetry at the mid-point of the central C-C bond, and one water mol­ecule. The succinamide mol­ecules are not directly connected via hydrogen bonds, but by hydrogen bonds via the water mol­ecules.

3-Acetyl-1-(4-methyl­phen­yl)thio­urea

The asymmetric unit of the title compound, C₁₀H₁₂N₂OS, contains two independent mol­ecules. In both mol­ecules, the conformations of the two N—H bonds are anti to each other. Furthermore, the conformations of the amide C=S bonds and the C=O bonds are anti to each other. The dihedral angles between the benzene ring and the side chain are 52.8 (1) and 68.0 (1)° in the two independent mol­ecules. An intra­molecular N—H...O hydrogen bond occurs in both independent mol­ecules. In the crystal, mol­ecules are linked into infinite chains along the a axis through a series of N—H...O and N—H...S hydrogen bonds.

3-Acetyl-1-(2,3-dimethyl­phen­yl)thio­urea

In the crystal structure of the title compound, C₁₁H₁₄N₂OS, the conformation of the two N-H bonds is anti. The conformation of the C=S and the C=O bonds is also anti. Furthermore, the N-H bond adjacent to the benzene ring is anti to the ortho- and meta-methyl groups. The dihedral angle between the benzene ring and the side chain [N-C(= S)-N-C(=O)-C; maximum deviation = 0.047 (4) Å] is 81.33 (10)°. The NH hydrogen adjacent to the benzene ring and the amide O atom exhibit bifurcated intra- and inter­molecular hydrogen bonding. In the crystal, mol­ecules form inversion dimers, which are linked into chains via R₂²(12) and R₂²(8) networks.

3-Acetyl-1-(2,6-dimethyl­phen­yl)thio­urea

In the title compound, C₁₁H₁₄N₂OS, the two N—H bonds are anti to each other and one of them is anti to the C=S and the other is syn. Further, the amide C=S and the C=O groups are anti to each other. The dihedral angle between the benzene ring and the side chain is 83.74 (5)°. An intra­molecular N—H...O hydrogen bond occurs. In the crystal, mol­ecules are linked into inversion dimers by pairs of N—H...S inter­actions.

3-Acetyl-1-(2,6-dichloro­phen­yl)thio­urea

In the title compound, C₉H₈Cl₂N₂OS, the conformation of one of the N—H bonds is anti to the C=S group and the other is anti to the C=O group. Further, the conformations of the amide C=S and the C=O group are anti to each other. The 2,6-dichloro­phenyl ring and the 3-acetyl­thio­urea side chain are inclined to one another at a dihedral angle of 83.44 (5)°. An intra­molecular N—H...O hydrogen bond occurs. In the crystal, mol­ecules form inversion dimers through pairs of N—H...S hydrogen bonds.

3-Acetyl-1-(2,5-dimethyl­phen­yl)thio­urea

In the title compound, C₁₁H₁₄N₂OS, the thioamide C=S and amide C=O bonds are anti to each other; the N—H bonds are also anti to each other. The mol­ecular conformation is stabilized by an N—H...O hydrogen bond. In the crystal, the mol­ecules are linked into inversion dimers by pairs of N—H...S hydrogen bonds.

3-Acetyl-1-(2,3-dichloro­phen­yl)thio­urea

In the crystal structure of the title compound, C₉H₈Cl₂N₂OS, there are two mol­ecules in the asymmetric unit which are connected by a pair of N—H...S hydrogen bonds. An intra­molecular N—H...O hydrogen bond stabilizes the mol­ecular conformation of each molecule.

3-Acetyl-1-(2,4-dimethyl­phen­yl)thio­urea

In the crystal structure of the title compound, C₁₁H₁₄N₂OS, the two N—H bonds are anti to each other. There is an intramolecular N—H...O hydrogen bond generating an S(6) ring motif.In the crystal, mol­ecules are linked via N—H...S hydrogen bonds with an R₂²(8) motif and N—H...O hydrogen bonds with an R₂²(12) motif into chains running along [1-10].

N-(4-Methyl­phenyl­sulfon­yl)maleamic acid

In the title compound, C₁₁H₁₁NO₅S, the dihedral angle between the benzene ring and the amide group is 76.88 (6)°. In the crystal, N—H...O(S) and O—H...O hydrogen bonds connect the mol­ecules into hydrogen-bonded layers perpendicular to the a axis.

3-Acetyl-1-(3-methyl­phen­yl)thio­urea

In the crystal structure of the title compound, C₁₀H₁₂N₂OS, the conformation of the two N—H bonds are anti to each other. The amide C=O and the C=S are are also anti to each other. The N—H bond adjacent to the benzene ring is syn to the m-methyl groups. The dihedral angle between the benzene ring and the side chain [mean plane of atoms C—C(O)N—C—N; maximum deviation 0.029 (2) Å] is 14.30 (7)°. There is an intramolecular N—H...O hydrogen bond generating an S(6) ring motif. In the crystal, the molecules are linked via N—H...) hydrogen bonds, forming chains propagating along [001]. The S atom is disordered and was refined using a split model [occupancy ratio 0.56 (4):0.44 (4)].

N-(2-Chloro­phen­yl)-2-nitro­benzene­sulfonamide

In the title compound, C₁₂H₉ClN₂O₄S, the N—H bond in the –SO₂—NH– segment is syn to both the ortho-nitro group in the sulfonyl­benzene ring and the ortho-Cl atom in the aniline ring. The mol­ecule is twisted at the S—N bond with a torsion angle of 75.0 (2)°. The dihedral angle between the sulfonyl­benzene and aniline rings is 54.97 (11)°. The amide H atom shows bifurcated hydrogen bonding, generating S(7) and C(4) motifs. In the crystal, N—H...O(S) hydrogen bonds link the mol­ecules into chains.

N-(3-Chloro­phen­yl)-2-nitro­benzene­sulfonamide

In the title compound, C₁₂H₉ClN₂O₄S, the dihedral angle between the aromatic rings is 73.65 (7)°. The amide H atom shows bifurcated hydrogen bonding, generating an intra­molecular S(7) and an inter­molecular C(4) motif.

N-(4-Chloro­phen­yl)-2-nitro­benzene­sulfonamide

In the title compound, C₁₂H₉ClN₂O₄S, the dihedral angle between the aromatic rings is 70.27 (8)°. In the crystal, mol­ecules are linked by pairs of N—H...O(S) hydrogen bonds, forming inversion dimers.

N-(3-Methyl­phen­yl)-2-nitro­benzene­sulfonamide

In the title compound, C₁₃H₁₂N₂O₄S, the dihedral angle between the benzene rings is 73.64 (7)°. The amide H atom exhibits bifurcated hydrogen bonding: an intra­molecular N—H...O hydrogen bond generates an S(7) motif while in the crystal, N—H...O(S) hydrogen bonds link the mol­ecules into zigzag C(4) chains running along the b axis.

N-(2-Methyl­phen­yl)-2-nitro­benzene­sulfonamide

In the title compound, C₁₃H₁₂N₂O₄S, the dihedral angle between the benzene rings is 53.44 (14)°. The amide H atom exhibits bifurcated hydrogen bonding: an intra­molecular N—H...O hydrogen bond generates an S(7) motif while in the crystal, N—H...O(S) hydrogen bonds link the mol­ecules into zigzag C(4) chains along the c axis.

2-Nitro-N-phenyl­benzene­sulfonamide

In the title compound, C₁₂H₁₀N₂O₄S, the conformation of the N—H bond in the –SO₂—NH– fragment is syn to the ortho-nitro group in the sulfonyl­benzene ring. The mol­ecule is twisted at the S—N bond, the C—N—S—C torsion angle being −72.83 (15)°. The dihedral angle between the benzene rings is 59.55 (7)°. The amide H atom and the nitro group O atom form an intra­molecular hydrogen bond, generating an S(7) motif. In the crystal, C—H...O hydrogen-bond inter­actions link the mol­ecules into S₂²(10) networks.

N-(4-Methyl­phen­yl)-2-nitro­benzene­sulfonamide

In the crystal of the title compound, C₁₃H₁₂N₂O₄S, the conformation of the N—H bond in the –SO₂—NH– segment is syn to the ortho-nitro group in the sulfonyl benzene ring. The mol­ecule is twisted at the S—N bond with a torsion angle of 76.55 (18)°. The dihedral angle between the planes of the rings is 72.64 (8)°. In the crystal, mol­ecules are linked by pairs of N—H...O(S) hydrogen bonds to form inversion dimers.

N-(2-Methyl­phen­yl)-4-nitro­benzene­sulfonamide

In the title compound, C₁₃H₁₂N₂O₄S, the dihedral angle between the planes of the rings is 51.11 (10)°. In the crystal, mol­ecules are linked into inversion dimers through pairs of N—H...O(S) hydrogen bonds.

N-(3,5-Dimethyl­phen­yl)-2-nitro­benzene­sulfonamide

The asymmetric unit of the title compound, C₁₄H₁₄N₂O₄S, consists of two crystallographically independent mol­ecules. The mol­ecules are twisted at the S—N bonds with C—S—N—C torsion angles of 44.2 (3) and −49.3 (3)°. The dihedral angles between the benzene rings in the two mol­ecules are 71.53 (7) and 72.11 (7)°. The amide H atoms exhibit bifurcated intra- and inter­molecular hydrogen bonds; the intra­molecular N—H...O(N) hydrogen bonds generate S(7) motifs. In the crystal, the independent mol­ecules are separately connected through the inter­molecular N—H...O(S) hydrogen bonds, generating a C(4) motif and a helical chain along the b axis for one mol­ecule and an R₂²(8) motif and an inversion dimer for the other. The crystal studied was a pseudo-merohedral twin with twin law (-100/0-10/001), the refined ratio of the twin domains being 0.7876 (12):0.2124 (12).

4-Nitro-N-phenyl­benzene­sulfonamide

In the title compound, C₁₂H₁₀N₂O₄S, the dihedral angle between the aromatic rings is 36.19 (18)°. In the crystal, N—H...O hydrogen bonds link the mol­ecules into C(4) chains running along the a axis.

N-(2,3-Dimethyl­phen­yl)-2-nitro­benzene­sulfonamide

There are two independent mol­ecules in the asymmetric unit of the title compound, C₁₄H₁₄N₂O₄S. The N—H bonds are syn to the ortho-nitro groups in the sulfonyl benzene rings and anti to the methyl groups in the aniline benzene rings. The mol­ecules are twisted at the S—N bonds with torsion angles of −60.4 (3) and 58.8 (3)° in the two mol­ecules. The dihedral angles between the planes of the sulfonyl and the anilino benzene rings are 53.67 (8) and 56.99 (9)°. The amide H atoms of both mol­ecules are involved in an intra­molecular hydrogen bond, generating an S(7) motif. In the crystal, pairs of N—H...O(S) hydrogen bonds link like mol­ecules into inversion dimers.

N-(3-Chloro­phen­yl)-4-nitro­benzene­sulfonamide

There are two independent mol­ecules in the asymmetric unit of the title compound, C₁₂H₉ClN₂O₄S, in which the dihedral angles between the planes of the benzene rings are 46.90 (14) and 44.50 (14)°. In the crystal, N—H...O hydrogen bonds link the mol­ecules into zigzag chains parallel to the a axis.

N-(3,5-Dimethyl­phen­yl)-4-nitro­benzene­sulfonamide

There are two independent mol­ecules in the asymmetric unit of the title compound, C₁₄H₁₄N₂O₄S, in which the dihedral angles between the benzene rings are 56.22 (15) and 58.16 (14)°. In the crystal, N—H...O_nitro hydrogen bonds link the mol­ecules into zigzag chains running along the a-axis direction.

N-(2,5-Dimethyl­phen­yl)-2-nitro­benzene­sulfonamide

In the crystal structure of the title compound, C₁₄H₁₄N₂O₄S, the N—H bond is syn to the ortho-nitro group in the sulfonyl benzene ring and anti to the ortho- and syn to the meta-methyl groups in the aniline ring. The mol­ecule is twisted at the S—N bond with a torsion angle of 71.41 (18)°. The dihedral angle between the planes of the benzene rings is 51.07 (8)°. In the crystal, pairs of N—H...O_sulfonamide hydrogen bonds link the mol­ecules into inversion dimers.

N-(3,5-Dichloro­phen­yl)-2-nitro­benzene­sulfonamide

In the title compound, C₁₂H₈Cl₂N₂O₄S, the C—S—N—C torsion angle is 49.34 (18)° and the dihedral angle between the benzene rings is 71.92 (10)°. The amide H atom exhibits bifurcated hydrogen bonding. The N—H bond is syn to the ortho-nitro group enabling the formation of an S(7) loop. In the crystal, pairs of N—H...O(S) hydrogen bonds link the mol­ecules into inversion dimers via R₂²(8) rings.

N-(2-Chloro­phen­yl)-4-nitro­benzene­sulfonamide

In the title compound, C₁₂H₉ClN₂O₄S, the dihedral angle between the benzene rings is 70.60 (11)°. An intra­molecular N—H...Cl contact occurs. In the crystal, mol­ecules form inversion dimers via pairs of N—H...O hydrogen bonds.