Synthesis, spectral and electrochemical study of perchlorinated tetrapyrazinoporphyrazine and its Al III , Ga III and In III complexes

Octachloro- and Hexadecafluoro-Substituted Lanthanide(III) Phthalocyaninates: Synthesis and Spectral Properties

“…[16] Moreover, the use of DBU as a base is preferred rather than employment of alkoxide ions because of the possibility of nucleophilic substitution, which is typical for the electron-deficient systems. [17,18] Absence of sandwich-type by-products was proven by TLC, UV-Vis and MALDI TOF methods. The products of oligomerization of starting nitrile were removed by washing with MeOH.…”

Synthesis and Spectral Properties of New Octamethyl Substituted Tetrapyrazinoporphyrazines

“…[9][10] Annulation of porphyrazine periphery by electrondeficient pyrazine rings results in n-type conductivity of target pyrazinoporphyrazines. [2,11] High values of secondorder nonlinear optical responses were also demonstrated for substituted pyrazinoporphyrazines. [5,12] Thereby, an effective synthesis of new pyrazinoporphyrazines is an important problem, as well as a study of their properties.…”

“…The precipitate was recrystallized from ethanol to give compound 1 (0.079 g, 51 %); mp 110 °C (lit. 110-112 °С [18] 3,9,10,16,17,23,4,8,11,15,18,22,. Magnesium chips (0.14 g, 5.8 mmol) were completely dissolved in boiling dry n-butanol (7 mL) 2,3,9,10,16,17,23,24-Octamethyl-1,4,8,11,15,18 …”

Perchlorinated vanadyl tetrapyrazinoporphyrazine: spectral, redox and magnetic properties

“…Chlorine atoms as substituents in benzene rings of phthalocyanine exert electron-withdrawing effect on the macrocycle 25 and its electron deficiency can further be increased by combined aza substitution in the case of tetrapyrazinoporphyrazine analogues. 26 Octachlorinated tetrapyrazinoporphyrazine and its complexes with aluminum subgroup metals, 27 as well as with Fe( ii ) 28 and Sn( ii ) 29 have been reported. The addition of electron-withdrawing substituents to tetrapyrazinoporphyrazines can shift their reduction potentials to more positive values.…”