Nucleophilic Substitution in 4-Bromo-5-nitrophthalodinitrile: V. Synthesis of 5-Nitro-4-(4-R-phenoxy)phthalodinitriles and Phthalocyanines Derived from Them

A series of aryloxy-substituted phthalodinitriles were prepared by nucleophilic aromatic substitution of bromine in 4-bromo-5-nitrophthalodinitrile, and the corresponding phthalocyanines were synthesized. The physicochemical properties of phthalocyanines depend on the substituent in the aryl moiety.     

4-Tetraphenyl-and 4-tetraphenoxy-substituted meso-tetraphenyltetrabenzoporphyrins. Synthesis and spectral properties

The reactions of 4-phenyl-and 4-phenoxyphthalimide with benzoic acid in the presence of zinc(II) oxide gave zinc complexes of meso-tetraphenyltetra(4-phenylbenzo)porphyrin and meso-tetraphenyltetra(4-phenoxybenzo)porphyrin, respectively, and the latter were treated with hydrochloric acid to isolate the corresponding metal-free prophyrins. Spectral properties of the complexes and ligands were studied.     

Nucleophilic substitution in 4-bromo-5-nitrophthalodinitrile: VIII. Synthesis of 4-(benzotriazol-1-yl)-5-[4-(1-methyl-1-phenylethyl)phenoxy]phthalodinitrile and phthalocyanines on its basis

Nucleophilic aromatic substitution of the bromine atom in 4-bromo-5-nitrophthalodinitrile by a 2-aminophenylamine residue followed by conversion of the resulting compound to 4-(1-benzothiazol-1-yl)-5-nitrophthalodinitrile and nucleophilic substitution of the nitro group by a 4-(1-methyl-1-phenylethyl)-phenoxy group gave 4-(benzotriazol-1-yl)-5-[4-(1-methyl-1-phenylethyl)phenoxy]phthalodinitrile. The latter product was reacted with certain metal acetates and chlorides to obtain the corresponding metal complexes of octasubstituted phthalocyanines. Spectral properties of the complexes were studied.     

Europium(III), Holmium(III), and Lutecium(III) Complexes with Octaphenyltetraazaporphyrin: State and Stability in Proton-Donor Media

Acid–base interaction of holmium(III) and lutecium(III) complexes with octaphenyltetraazaporphyrin in AcOH and AcOH–benzene and AcOH–H₂SO₄ systems was found to involve one nitrogen meso-atom. Stability constants of the obtained acid forms are determined. Solvoprotolytic dissociation of complexes in the systems based on AcOH is studied and its mechanism is discussed.     

Thermodynamic parameters of sublimation of calix[4]arenes

The temperature dependences of the vapor pressure of calix[4]arenes were determined by the Knudsen effusion method. Some calix[4]arenes can form congruently subliming intramolecular compounds with a solvent. The thermodynamic parameters of the sublimation of the compounds were calculated. Molecules of organic solvents incorporated in the cavity of calix[4]arenes stabilize the crystal lattice, increasing the enthalpy of sublimation. The electrostatic interactions presumably make a significant contribution to stabilization of the crystal lattice of stoichiometric complexes of calix[4]arenes with solvents.     

Some Reactions of 3,6-Bis(4-amino-1,2,5-oxadiazol-3-yl)-1,4,2,5-dioxadiazine

Diazotization and nitration of 3,6-bis(4-amino-1,2,5-oxadiazol-3-yl)-1,4,2,5-dioxadiazine gave, respectively, 3,6-bis(4-azido-1,2,5-oxadiazol-3-yl)-1,4,2,5-dioxadiazine and 3,6-bis(4-nitroamino-1,2,5-oxadi-azol-3-yl)-1,4,2,5-dioxadiazine. The latter reacted with nitrogenous bases to form the corresponding salts.     

Weighted Zolotarev metrics and the Kantorovich metric

In this paper we study properties of weighted Zolotarev metrics and compare them with the Kantorovich metric.