Synthesis and characterization of 2,2'-(pyridine-2,6-diyl)bis(1H-benzo[d]imidazol-3-ium) 2,4,6-trimethylbenzenesulfonate chloride by experimental and theoretical methods.

The title molecular salt (2), 2,2'-(pyridine-2,6-diyl)bis(1H-benzo[d]imidazol-3-ium) 2,4,6-trimethylbenzenesulfonate chloride (C19H15N5(2+)·C9H11O3S(-)·Cl(-)), was synthesized unexpectedly from the reaction of 2,6-bis(benzimidazol-2-yl)pyridine (1) with 2-mesitylenesulfonyl chloride. Spectroscopic techniques (FT-IR, NMR and UV-vis.) were used to characterize compounds 1 and 2.

Synthesis and characterization of SiO2-supported ruthenium complexes containing aromatic sulfonamides: as catalysts for transfer hydrogenation of acetophenone.

3-Amino-N-aryl-benzenesulfonamides (1–3) were successfully synthesized by the reaction of m-phenylenediamine and various benzenesulfonyl chlorides. Then, a series of ruthenium complexes (4–6) were prepared from the reaction of [RuCl2(p-cymene)]2 and 1–3. Finally, SiO2-supported Ru(II) complexes (7–9) were prepared by an impregnation method.

Synthesis, spectroscopic characterization, X-ray structure and DFT studies on 2,6-bis(1-benzyl-1H-benzo[d]imidazol-2-yl)pyridine.

The title molecule, 2,6-bis(1-benzyl-1H-benzo[d]imidazol-2-yl)pyridine (C(33)H(25)N(5)), was synthesized and characterized by elemental analysis, FT-IR spectroscopy, one- and two-dimensional NMR spectroscopies, and single-crystal X-ray diffraction. In addition, the molecular geometry, vibrational frequencies and gauge-independent atomic orbital (GIAO) (1)H and (13)C NMR chemical shift values of the title compound in the ground state have been calculated using the density functional theory at the B3LYP/6-311G(d,p) level, and compared with the experimental data. The complete assignments of all vibrational modes were performed by potential energy distributions using VEDA 4 program.

Concomitant polymorphism of a pyridine-2,6-dicarboxamide derivative in a single space group: experimental and molecular modeling study.

The title compound, N(2),N(6)-bis{2-[(Z)-2-hydroxybenzylideneamino]phenyl}pyridine-2,6-dicarboxamide (3), has been synthesized by the reaction of 2-{(2-aminophenylimino)methyl}phenol (1) with pyridine-2,6-dicarbonyl dichloride (2), and characterized by elemental analysis, FT-IR and NMR spectroscopies and thermal analysis. Compounds 1 and 3 were evaluated for their antibacterial activities against Gram-positive and Gram-negative bacteria. The catalytic activity of 3 was also studied, and as a result, the in situ prepared three component system Ru(II)/3/KOH is shown to be an efficient catalyst for the transfer hydrogenation reaction of various ketones under mild conditions.

Bis{2,6-bis[1-(4-fluorophenylimino)ethyl]pyridine}-1kappa3N,N',N'';3kappa3N,N',N''-di-mu-chlorido-1:2kappa2Cl:Cl;2:3kappa2Cl:Cl-trichlorido-1kappaCl,2kappaCl,3kappaCl-2-copper(I)-1,3-dicopper(II).

The title complex, [Cu3Cl5(C21H17N3F2)2], is the first reported copper trimer including both Cu(I) and Cu(II) ions. The two Cu(II) ions are five-coordinate in a significantly distorted square-pyramidal arrangement, with the bridging Cl atom located in the apical position, and the pyridine (py) N atom, the two imine N atoms and the other Cl atom located in the basal plane. The Cu(I) ion is in a trigonal planar configuration surrounded by three Cl atoms.

Photocharacterization of novel ruthenium dyes and their utilities as oxygen sensing materials in presence of perfluorochemicals.

Photophysical constants of three novel ruthenium dyes derived from tridentate pyridinediimine (pydim) ligands has been declared and their photoluminescent properties were investigated in solvents of dichloromethane (DCM), tetrahydrofuran (THF) and ethanol (EtOH) by UV-Visible absorption, emission and excitation spectra. The quantum yield, fluorescence decay time, molar extinction coefficient and Stoke's shift values of the novel ruthenium complexes were determined. The perfluoro compound (PFC) nonadecafluorodecanoic acid which is also known as medical gas carrier has been used for the first time together with newly synthesized Ruthenium complexes in ethyl alcohol.

(Acetonitrile){2,6-bis[1-(2,4,6-trimethylphenylimino)ethyl]pyridine}dichloridoruthenium(II) dichloromethane solvate.

In the title compound, [RuCl2(C(2)H(3)N)(C(27)H(31)N(3))].CH(2)Cl(2), the Ru(II) ion is six-coordinated in a distorted octahedral arrangement, with the two Cl atoms located in the apical positions, and the pyridine (py) N atom, the two imino N atoms and the acetonitrile N atom located in the basal plane. The two equatorial Ru-N(imino) distances are almost equal (mean 2.

(2,6-Bis[1-[4-(dimethylamino)phenylimino]ethyl]pyridine)dichlorido(triphenylphosphine-kappaP)ruthenium(II): a zigzag chain of fused centrosymmetric R(2)(2)(12) rings.

The title compound, [RuCl(2)(C(25)H(29)N(5))(C(18)H(15)P)], a transfer hydrogenation catalyst, is supported by an N,N',N''-tridentate pyridine-bridged ligand and triphenylphosphine. The Ru(II) centre is six-coordinated in a distorted octahedral arrangement, with the two Cl atoms located in the axial positions, and the pyridine (py) N atom, the two imino N atoms and the triphenylphosphine P atom located in the equatorial plane. The two equatorial Ru-N(imino) distances (mean 2.

(2Z,6Z)-N,N-Bis(2,6-diisopropyl-phen-yl)-N,N-bis-(2-methoxy-ethyl)pyridine-2,6-dicarboxamidine.

In the title compound, C(37)H(53)N(5)O(2), the benzene rings make dihedral angles of 84.61 (8) and 67.10 (9)° with the pyridine ring.

Dichloro[(1E,1'E)-1,1'-(pyridine-2,6-diyl)diethanone bis(O-methyloxime)-kappa3N1,N2,N6]cobalt(II).

In the title compound, [CoCl2(C11H15N3O2)], the CoII ion is five-coordinated in a strongly distorted square-pyramidal arrangement, with one of the two Cl atoms located in the apical position, and the other Cl atom and the three N-donor atoms of the tridentate methyloxime ligand located in the basal plane. The non-H atoms, except for the Cl atoms, lie on a mirror plane. The two equatorial Co-Noxime distances are almost equal (mean 2.

Dichloro[(1E,1'E)-1,1'-(pyridine-2,6-diyl)diethanone bis(O-methyloxime)-kappa(3)N(1),N(2),N(6)]copper(II).

In the title compound, [CuCl(2)(C(11)H(15)N(3)O(2))], the Cu(II) ion is five-coordinated in a strongly distorted trigonal-bipyramidal arrangement, with the two methyloxime N atoms located in the apical positions, and the pyridine N and the Cl atoms located in the basal plane. The two axial Cu-N distances are almost equal (mean 2.098 A) and are substantially longer than the equatorial Cu-N bond [1.