A series of ionophores based on diaza 18-crown-6 units possessing amide and sulfonamide functions were prepared. Their complexing properties were investigated in solvent polymeric membrane electrodes. The influence of the structure of ligands, prepared on the selectivity of complexation, was examined with special respect to lead ions. Substantial changes were observed, when methyl substituent i...

In the crystal structure of the title compound, C(12)H(10)ClNO(2)S, the N-H bond is trans to one of the S=O bonds. The two aromatic rings form a dihedral angle of 65.4 (1)°, compared with a value of 49.1 (1)° in N-(2-chloro-phen-yl)-benzene-sulfonamide. The mol-ecules are connected by inter-molecular N-H⋯O hydrogen bonds into chains running along the b axis.

In the title compound, C(14)H(13)BrN(2)O(2)S, a novel sulfonamide derivative, inter-molecular N-H⋯O and C-H⋯O hydrogen bonds link neighbouring mol-ecules into different dimers along the b axis, generating R(2) (2)(8) and R(2) (2)(16) ring motifs. The dihedral angle between the benzene rings is 82.39 (13)°. The crystal structure is further stabilized by inter-molecular π-π stacking inter-actions...

The development of new methods to skeletally diverse sultams based on a central α-halo benzene sulfonamide building block is reported. Several salient features of this building block are utilized in multiple reaction pathways, including the Heck reaction, C- and O-arylation, Sonogashira-Pauson-Khand, Sonogashira-intramolecular hydroamination, lithiative cyclization and domino aza-Michael Heck f...

The title compound, C(15)H(23)NO(2)S, synthesized by N-methyl-ation of cyclo-hexyl-amine sulfonamide with propyl iodide, is of inter-est as a precursor to biologically active sulfur-containing heterocyclic compounds. The cyclo-hexyl ring exists in the chair form and the dihedral angle between the ring plane of the benzene ring and that of the cyclo-hexyl ring is 50.13 (9)°.

The nine-membered fused-ring system of the title pyridazine derivative, C(13)H(12)N(4)O(4)S, is approximately planar (r.m.s. deviation 0.027 Å), and the benzene ring of the phenyl-sulfamide substituent is aligned at 43.5 (1)° to the fused-ring system. The amine group of the sulfonamide substituent forms an N-H⋯O hydrogen bond to the ketonic O atom of two neigboring mol-ecules to generate a chai...

The unit cell of the title compound, C(13)H(9)Cl(2)NO(3)S·0.5C(7)H(8), contains two mol-ecules of 2-chloro-N-(4-chloro-benzo-yl)benzene-sulfonamide and one toluene mol-ecule, which is disordered about a centre of inversion. The dihedral angle between the two aromatic rings is 85.7 (1)°. In the crystal, mol-ecules are linked by pairs of N-H⋯O(S) hydrogen bonds, forming centrosymmetric dimers.

The title compound, C(11)H(15)NO(6)S, features a distorted tetra-hedral geometry for the S atom. One of the sulfonamide O atoms is approximately coplanar with the benzene ring [C-C-S-O torsion angle = -160.81 (7)°], whereas the other lies well below the plane [C-C-S-O = -29.66 (8)°]. In the crystal, O-H⋯O and C-H⋯O hydrogen bonds link the mol-ecules into chains parallel to the b axis.

There are two mol-ecules in the asymmetric unit of the title compound, C(13)H(12)ClNO(2)S, with similar conformations. The orientations of the ortho-methyl groups in the sulfonyl benzene rings are in the direction of the N-H bonds of the sulfonamide groups. In the crystal, the mol-ecules are each linked into centrosymmetric dimers through N-H⋯O hydrogen bonds and packed into a layered structure...

In the title compound, C(11)H(16)N(2)O(3)S, the S atom has a distorted tetra-hedral geometry [maximum deviation: O-S-O = 119.48 (15)°]. The dihedral angles between the benzene ring and its propyl-sulfonamide and methyl-amide substituents are 71.8 (2) and 5.8 (1)°, respectively. In the crystal, mol-ecules are linked by N(m)-H⋯O(s) (m = methyl-amide and s = sulfonamide) hydrogen bonds, forming C(...