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The content of this work is based on the introduction of the salicylhydrazone-zinc complexes into the phthalocyanine core. The reaction of the salicylhydrazone substituted ZnPc (1) with the related zinc(II) salt in basic conditions in DMF yielded bis[bis(salicyhydrazone)phenoxy)zinc(II)] phthalocyaninato zinc(II) (5) in which two salicylhydrazone-Zn complexes are linked through oxygen bridges to the macrocyclic core as three-nuclear complex. The novel compound synthesized in this study was fully characterized by general spectroscopic techniques such as FT-IR, UV-vis, 1H NMR, 13C NMR, elemental analysis and mass spectroscopy. In addition, spectral, photophysical (fluorescence quantum yields), and photochemical (generation of singlet oxygen and photo stability under light irradiation) properties of newly synthesized phthalocyanine (5) and the starting Pcs molecules used to obtain this molecule were investigated in DMSO solutions, comparatively.

The synthesis and characterization of a copper(II) phthalocyanate substituted with four 20-membered tetraaza-dioxa macrocycles from 21,22-dibromo-2,8,11,17-tetra(toluene-p-sulphonyl)-1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18-octadecahydrobenzox[l] [2,8,11,17]tetraaza[4,13]dioxacyclodi-contine is described. The detosylation of the macrocyclic aza groups provides four tetraaza-dioxa mixed donor sites for binding metal ions. The structures of the compounds were determined by elemental analysis, 1H, 13C NMR, IR and MS spectral data.

Dibenzo[e,k]-2,3-bis(hydroxyimino) 1.4.7.10-tetrathia-2,3,8,9-tetrahydrocyclododecine (S4H2) and dibenzo-[e,k]-2,3-bis(hydroxyimino)-1,4-dithia-7,10-dioxa-2,3,8,9- tetrahydrocyclododecine (O2S2H2) have been prepared from (E,E)-dichloroglyoxime, 2,3,8,9-dibenzo-1,4,7,10-tetrathiadecane (DTT) and 2,3,8,9-Dibenzo-4,7-dioxa-1,10-dithiadecane (DDD) which was synthesized by treating 1,2-bis(o-aminophenoxy)ethane with HNO2 and potassium ethylxsanthate. The structures of these vic-dioximes have been determined as the (E,E)-forms according to 1H-NMR and IR data. Only mononuclear complexes with a metal-ligand ratio of 1:2 have been isolated with Co(II), such as [(S4H)2Co(III)L′Cl] and [(O2S2H)2Co(III)L′Cl]; Cu(II) forms only trinuclear complexes. Reaction of the mononuclear complexes with Pd(II) gives heterotrinuclear complexes.

A new vicinal dioxiroe ligand with two 2-benzimidazolylmethyl groups, namely S,S′-bis(2-benzimidazolylroethyl)dithioglyoxime (H2L), has been prepared from cyanogen-di-N-oxide and 2-mercaptomethylbenz-imidazole in dichloromethane at -10°C. Nickel(II), palladium(II), cobalt(II) and cobalt(III) complexes of H2L have a metal : ligand ratio of 1 : 2 and the ligand coordinates through the two N atoms, as most of the vicinal dioximes. [Co(HL)2(L′)Cl] has been prepared with L′ = pyridine, 2,6-dimethylpyridine, 2-mercaptopyridine, 2-car-boxypyridine, pyridine-2-carboxyaldehyde, triphenylphosphine, tri-phenylarsine, together with a chloride ion as axial ligands. All these complexes are slightly soluble in common organic solvents. Structures are proposed according to elemental analyses, 1H, 13C-NMR IR, and UV-Visible spectral data.

It is known that 1,3-bis(benzo-15-crown-5)-2-thioxo-4,5-bis(hydroxyimino) imidazoline (H2L) exists in two isomeric forms which are amphi− and anti. The isomers differ by the orientations of OH and C=N groups on their oxime compounds. In the present work, the temperature dependance of the interconcersion of the amphi− vic−dioxime to anti− dioxime is investigated. The template effect on isomerisation is also studied. The every steps of geometric isomerizations are investigated with 1H, 13C-NMR and IR spectroscopy.