Abstract The adsorption performance of pyridine onto polyaluminium chloride (PAC) and anionic polyacrylamide (APAM) water treatment residuals (WTRs) was investigated by batch experiments. This study confirmed the assumption that PAC–APAM WTRs had ability to remove pyridine. non-linear Dubinin–Radushkevich model Freundlich better described isotherms, indicating a chemically controlled multilayer...

this study demonstrates the use of a selective and sensitive voltammetric sensor for determination of acetaminophen (ac). this was  performed by modifying a glassy carbon electrode with composite film of poly(4-vinylpyridine) and graphene sheet (p4vp/gr-gce). the redox peak currents of ac increased significantly at p4vp/gr-gce. the result was achieved by the synergistic effect of combined elect...

In an earlier communication (I), Griffith and Byerrum reported that succinate-2,3-r4C was incorporated into positions 2 and 3 of the pyridine ring of nicotine, and 14C! was distributed essentially equally between the 2 carbon atoms. In addition, ‘4C-labeled glycerol was shown to be efficiently incorporated into the pyridine moiety, and it was suggested that positions 4, 5, and 6 of the ring are...

A series of M[Au(CN)(2)](2)(analyte)(x) coordination polymers (M = Co, Ni; analyte = dimethylsulfoxide (DMSO), N,N-dimethylformamide (DMF), pyridine; x = 2 or 4) was prepared and characterized. Addition of analyte vapours to solid M(μ-OH(2))[Au(CN)(2)](2) yielded visible vapochromic responses for M = Co but not M = Ni; the IR ν(CN) spectral region changed in every case. A single crystal structu...

In the structure of the title compound, [CoCl(2)(C(9)H(16)N(2)Si)(2)], the Co(II) atom is located on an inversion center in a slightly distorted tetra-hedral environment formed by two chloride ions and the pyridine N atoms of two chelating 6-methyl-2-[(trimethyl-silyl)amino]pyridine ligands. The dihedral angle between the planes of the pyridine rings is 80.06 (5)°. Cohesion within the crystal s...

In the title compound, C(32)H(37)NO(3), the central dihydro-pyridine ring adopts a nearly planar flattened-boat conformation, whereas both cyclo-hexenone rings adopt half-chair conformations. The mean and maximum deviations from the mean plane of the dihydro-pyridine ring are 0.1252 (9) and 0.188 (1) Å, respectively. The 4-eth-oxy-phenyl and phenyl rings form dihedral angles of 75.20 (4) and 82...

In the title compound, [ZnCl(2)(C(8)H(7)N(3))(2)], the Zn(II) cation is coordinated by two Cl(-) anions and two 4-(1H-pyrazol-3-yl)pyridine ligands in a distorted tetra-hedral geometry. In the two 4-(1H-pyrazol-3-yl)pyridine ligands, the dihedral angles between the pyrazole and pyridine rings are 3.3 (3) and 13.3 (3)°. Inter-molecular N-H⋯N and N-H⋯Cl hydrogen bonding is present in the crystal ...

hantzsch 1 ,4- dihy&opyridines; are rapidly oxidized to the corresponding pyridine derivatives using zinc chlorochromate nonahydrate [zn(c1cro ) .9h o] in dichloromethane at room temperature. in addition to aromatization, no loss of the 4- substituent is observed