Regioselective nucleophilic addition of bisnucleophiles 1,2-benzenediamine, 2-amino-benzenethiol, and N-phenyl-1,2-benzenediamine to 1,3-diphenylbenzo[e][1,2,4]triazin-7(1H)-one (1) at C6 followed by intramolecular cyclocondensation at the C7 carbonyl afforded highly coloured tetracenes 1,3-diphenyl-1,6-dihydro-[1,2,4]triazino[5,6-b]phenazin-4-ium 4-methylbenzenesulfonate (12), 1,3-diphenyl-1H-...

spacing 23.62; those at 1 and 2, and at 3 and 4 have dyad screw axes parallel to the edge with spacing 6.50. Diphenic Acid.-The analysis of this compound is not complete. The results obtained show that the crystal is orthorhombic with the dimensions a = 14.12, b = 11.90, c = 13.75, and that there are eight molecules in the unit cell. This indicates an arrangement quite different from the other ...

In the title triangulo-triruthenium compound, [Ru(3)(C(25)H(22)As(2))(C(19)H(17)PS)(CO)(9)], the bis-(diphenyl-arsanyl)methane ligand bridges an Ru-Ru bond and the monodentate phosphane ligand bonds to the third Ru atom. Both arsine and phosphane ligands are equatorial with respect to the Ru(3) triangle. In addition, each Ru atom carries one equatorial and two axial terminal carbonyl ligands. T...

In the title triangulo-triruthenium compound, [Ru(3)(C(36)H(27)As)(C(25)H(22)P(2))(CO)(9)], the bis-(diphenyl-phosphan-yl)methane ligand bridges an Ru-Ru bond and the monodentate arsine ligand bonds to the third Ru atom. Both the arsine and phosphine ligands are equatorial with respect to the Ru(3) triangle. In addition, each Ru atom carries one equatorial and two axial terminal carbonyl ligand...

The properties and actions of the bridged diphenyl acaricides are discussed. These pesticides, which are more or less structurally related to DDT, were the first of the specific acaricides to be developed. They exhibit remarkable properties of specificity, being primarily toxic to phytophagous mites but of very low toxicity to most nontarget species, including insects, fish, birds, and mammals....