We report the first, solvent-free synthesis of 4-pyridyl tacn, cyclen, and cyclam derivatives as new design elements to prepare electrocatalysts, for example, by the differential metal complexation of 4-py(n)cyclen (n = 2, 4).

In the title compound, C(17)H(17)N(3)O(2)S, the five-membered ring forms dihedral angles of 53.02 (3) and 78.57 (3)° with the 3-meth-oxy-substituted and 2-meth-oxy-substituted benzene rings, respectively. In the crystal structure, mol-ecules are linked into centrosymmetric dimers via inter-molecular N-H⋯S hydrogen bonds.

The non-coplanar substituted phenyl rings at the 9-position of a fluorenyl unit can be involved in pi-electron delocalization in which the resulting oligofluorenes exhibit a very large enhancement of two-photon absorption cross sections up to 2559 GM at 710 nm.

meta -Substituted N -phenyl, ′-methyl and -benzyl, imidazolium salts undergo acetate-assisted cyclometallation to provide mixtures of ortho para substituted cyclometallated complexes.

New N-(benzyl carbamothioyl)-2-hydroxy substituted benzamides 13, 20, and 21 were synthesized using sodium bicarbonate and benzyl amine with 2-thioxo-substituted-1,3-benzoxazines 6, 10a, b, 11c, and 12a-n. The 2-thioxo-substituted-1,3-oxazines 6, 10a-b, 11d 12a-n, and 26 were converted to the corresponding 2-methylthio-substituted-1,3-oxazines 14a-l and 24 which were then converted to 2-benzyl ...

A total of 62 populations of Heterodera glycines were collected in 10 states along the Mississippi and Missouri rivers, and 206 populations were collected in Arkansas. Among the 62 populations, races 2, 3, 4, 5, 6, 9, and 14 were found south of 37 degrees N latitude, and races 1 and 3 were found north of 37 degrees N latitude. In Arkansas samples, races 2, 4, 5, 6, 9, and 14 comprised 87% of th...

Experiments were conducted to determine the relationship between time of infection by Heterodera glycines and soybean growth in the greenhouse and yield of plants grown in the field. Soybean cultivar Essex seedlings growing in the greenhouse were inoculated with H. glycines at 2, 4, or 6 weeks after planting. Seedling growth was inhibited by H. glycines infection at 2 or 4 weeks after planting ...

A series of N-aryl-β-alanine derivatives and diazobenzenesulfonamides containing aliphatic rings were designed, synthesized, and their binding to carbonic anhydrases (CA) I, II, VI, VII, XII, and XIII was studied by the fluorescent thermal shift assay and isothermal titration calorimetry. The results showed that 4-substituted diazobenzenesulfonamides were more potent CA binders than N-aryl-β-al...

The synthesis and characterization of multinuclear complexes [Pd(acac)(fcdpm)] (1), [Pd(fcdpm)(2)] (2), [Co(acac)(fcdpm)(2)] (3), [Co(fcdpm)(3)] (4) and α-alkoxy derivatives [α-OMe-fcdpm] (5), [α-OEt-fcdpm] (6), [α-OPr(n)-fcdpm] (7) and [α-OBu(n)-fcdpm] (8) (fcdpm = 5-ferrocenyldipyrromethene; acac = acetylacetone) have been described. Formation of alkoxy derivatives 5-8 takes place from highly...

The thermal cis-to-trans isomerisation process has been studied for a series of para-, ortho- and polyhydroxy-substituted azobenzenes in different solvents. The kinetics of the thermal back reaction for the p-hydroxy-substituted azobenzenes depend strongly on the nature of the solvent used, with relaxation times ranging from 200-300 milliseconds in ethanol to half an hour in toluene. Otherwise,...