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1.  Poly[μ-aqua-μ-(N,4-di­chloro-2-methyl­benzene­sulfonamidato)-potassium] 
In the title compound, [K(C7H6Cl2NO2S)(H2O)]n, the K+ cation is hepta­coordinated by two water O atoms, a sulfonyl O atom from each of four different N,4-dichloro-2-methyl­benzene­sulfonamidate anions and a Cl atom of one of the anions. Further, K—O—K bridges form extensive polymeric chains along the b axis. In the crystal structure, the anions are linked into layers parallel to (100) by O—H⋯Cl and O—H⋯N hydrogen bonds.
doi:10.1107/S1600536813015845
PMCID: PMC3793672  PMID: 24109259
2.  Potassium N-bromo-4-chloro-2-methyl­benzene­sulfonamidate monohydrate 
In the title compound, K+·C7H6BrClNO2S−·H2O, the K+ cation is hepta­coordinated by two water O atoms, four sulfonyl O atoms of four different N-bromo-4-chloro-2-methyl­benzene­sulfonamidate anions, and one Br atom of one of the anions. The S—N distance of 1.584 (3) Å is consistent with an S=N double bond. In the crystal, the anions are linked into layers by O—H⋯Br and O—H⋯N hydrogen bonds.
doi:10.1107/S1600536813014979
PMCID: PMC3772410  PMID: 24046553
3.  N-(2,3-Dichloro­phen­yl)-2-nitro­benzene­sulfonamide 
In the title compound, C12H8Cl2N2O4S, the N—C bond in the C—SO2—NH—C segment has gauche torsions with respect to the S=O bonds. Further, the N—H bond is syn to the ortho-nitro group in the sulfonyl benzene ring and also syn to both the ortho- and meta-Cl atoms in the aniline ring. The mol­ecule is twisted at the S—N bond with a torsion angle of 61.15 (18)°. The dihedral angle between the planes of the benzene rings is 68.00 (6)°. The amide H atom exhibits an intra­molecular bifurcated N—H⋯(O,O) hydrogen bond. In the crystal, pairs of N—H⋯O(S) hydrogen bonds link the mol­ecules into inversion dimers with R 2 2(8) motifs.
doi:10.1107/S1600536812048076
PMCID: PMC3588328  PMID: 23476457
4.  N-(4-Chloro­phen­yl)-4-nitro­benzene­sulfonamide 
In the title compound, C12H9ClN2O4S, the dihedral angle between the benzene rings is 31.4 (2)°. In the crystal, N—H⋯O hydrogen bonds link the mol­ecules into C(4) chains running along the a-axis direction.
doi:10.1107/S1600536812049070
PMCID: PMC3588256  PMID: 23476450
5.  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 R 2 2(8) rings.
doi:10.1107/S1600536812048283
PMCID: PMC3589054  PMID: 23476290
6.  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.
doi:10.1107/S1600536812048684
PMCID: PMC3589068  PMID: 23476304
7.  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.
doi:10.1107/S1600536812047496
PMCID: PMC3589007  PMID: 23476243
8.  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⋯Onitro hydrogen bonds link the mol­ecules into zigzag chains running along the a-axis direction.
doi:10.1107/S1600536812047502
PMCID: PMC3589008  PMID: 23476244
9.  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⋯Osulfonamide hydrogen bonds link the mol­ecules into inversion dimers.
doi:10.1107/S1600536812047630
PMCID: PMC3589009  PMID: 23476245
10.  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.
doi:10.1107/S1600536812042456
PMCID: PMC3515121  PMID: 23284348
11.  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.
doi:10.1107/S1600536812042845
PMCID: PMC3515279  PMID: 23284499
12.  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.
doi:10.1107/S1600536812042080
PMCID: PMC3515114  PMID: 23284341
13.  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.
doi:10.1107/S1600536812037798
PMCID: PMC3470227  PMID: 23125671
14.  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 R 2 2(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).
doi:10.1107/S1600536812036926
PMCID: PMC3470185  PMID: 23125629
15.  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.
doi:10.1107/S1600536812036331
PMCID: PMC3435801  PMID: 22969647
16.  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.
doi:10.1107/S1600536812035866
PMCID: PMC3435757  PMID: 22969628
17.  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.
doi:10.1107/S1600536812034009
PMCID: PMC3435655  PMID: 22969528
18.  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.
doi:10.1107/S160053681203423X
PMCID: PMC3435676  PMID: 22969547
19.  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 S 2 2(10) networks.
doi:10.1107/S1600536812034265
PMCID: PMC3435678  PMID: 22969549
20.  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)].
doi:10.1107/S1600536812032825
PMCID: PMC3415014  PMID: 22905001
21.  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.
doi:10.1107/S1600536812033107
PMCID: PMC3415015  PMID: 22905002
22.  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.
doi:10.1107/S1600536812033272
PMCID: PMC3415016  PMID: 22905003
23.  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.
doi:10.1107/S1600536812033429
PMCID: PMC3415017  PMID: 22905004
24.  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 R 2 2(8) motif and N—H⋯O hydrogen bonds with an R 2 2(12) motif into chains running along [1-10].
doi:10.1107/S1600536812032382
PMCID: PMC3414951  PMID: 22904938
25.  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.
doi:10.1107/S1600536812032084
PMCID: PMC3414952  PMID: 22904939

Results 1-25 (391)