Synthesis and Some Properties of Transition Metal Complexes with Octa(sulfophenyl)tetrapyrazinoporphyrazine

Shishkin, V. N.; Kudrik, E. V.; Shaposhnikov, G. P.

doi:10.1007/s11173-005-0129-8

Cited by 9 publications

(5 citation statements)

References 8 publications

(6 reference statements)

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“…The electronic structures of cobalt(II) complexes with different ligands have been presented in the literature [36,37]. Based on the simplest model, three spin-allowed crystal field bands are expected in the spectra of tetrahedral cobalt(II) complexes, i.e ., 4 A 2 (F) → 4 T 2 (F), 4 A 2 (F) → 4 T 1 (F), 4 A 2 (F) → 4 T 1 (P).…”

Section: Resultsmentioning

confidence: 99%

Synthesis, Spectroscopy, Thermal Analysis, Magnetic Properties and Biological Activity Studies of Cu(II) and Co(II) Complexes with Schiff Base Dye Ligands

Ahmadi

Amani

2012

Molecules

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Three azo group-containing Schiff base ligands, namely 1-{3-[(3-hydroxy-propylimino)methyl]-4-hydroxyphenylazo}-4-nitrobenzene (2a), 1-{3-[(3-hydroxypropyl-imino)methyl]-4-hydroxyphenylazo}-2-chloro-4-nitrobenzene (2b) and 1-{3-[(3-hydroxy-propylimino)methyl]-4-hydroxyphenylazo}-4-chloro-3-nitrobenzene (2c) were prepared. The ligands were characterized by elemental analysis, FTIR spectroscopy, UV-Vis spectroscopy, 13C- and 1H-NMR spectroscopy and thermogravimetric analysis. Next the corresponding copper(II) and cobalt(II) metal complexes were synthesized and characterized by the physicochemical and spectroscopic methods of elemental analysis, FTIR spectroscopy, UV-Vis spectroscopy, magnetic moment measurements, and thermogravimetric analysis (TGA) and (DSC). The room temperature effective magnetic moments of complexes are 1.45, 1.56, 1.62, 2.16, 2.26 and 2.80 B.M. for complexes 3a, 3b, 3c, 4a 4b, and 4c, respectively, indicating that the complexes are paramagnetic with considerable electronic communication between the two metal centers.

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Section: Resultsmentioning

confidence: 99%

Synthesis, Spectroscopy, Thermal Analysis, Magnetic Properties and Biological Activity Studies of Cu(II) and Co(II) Complexes with Schiff Base Dye Ligands

Ahmadi

Amani

2012

Molecules

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“…The transition metal complexes of the octaphenyl [TPyz27PzM] (M = Fe II [198,199], Co II [63], Ni II , Cu II [200]) were sulfonated upon refluxing in chlorosulfonic acid and the watersoluble octasulfonated complexes (Scheme 25) were isolated with 45-88% yields. The 1 H NMR data evidence that sulfonation of all phenyl rings occurs in para-positions [198,199].…”

Section: Aryl Substituted Tpyzpzsmentioning

confidence: 99%

Tetrapyrazinoporphyrazines and their metal derivatives. Part I: Synthesis and basic structural information

Donzello

Ercolani

Novakova

et al. 2016

Coordination Chemistry Reviews

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“…Eight negative charges were also used successfully to inhibit aggregation in water. Compounds with both carboxy 43 [50] and sulfo 44 [68] groups with different central metals showed excellent solubility in water and UV-vis spectra typical for presence of only monomers.…”

Section: Aggregationmentioning

confidence: 99%

Azaphthalocyanines Containing Pyrazine Rings with Focus on the Alkylheteroatom, Aryl and Heteroaryl Substitution and Properties Important in Photodynamic Therapy

Zimčík

Novakova²,

Miletín³

et al. 2008

MHC

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In this work, we summarize the recent knowledge about the syntheses, UV-vis absorption properties, aggregation, protonation and deprotonation of macrocycle and singlet oxygen and fluorescence quantum yields in the group of azaphthalocyanines bearing pyrazine rings in their conjugated system. Precursors (pyrazine-2,3-dicarbonitriles) for tetramerization are usually built up by condensation from aliphatic starting materials thus enabling peripheral substitutions sometimes not available for phthalocyanines (Pc). Conditions of tetramerizations are discussed in the article too. Although tetrapyrazinoporphyrazines (TPyzPA) suffer from the hypsochromic shift comparing to corresponding Pc, several types of peripheral substituents can induce important bathochromic shift and eliminate this disadvantage. TPyzPA macrocycle tends to higher aggregation comparing to Pc molecules and a lot of aggregation inhibiting substituents have been developed. Protonation of the TPyzPA macrocycle in acidic media starts on azomethine nitrogens and at higher concentrations of acid also pyrazine nitrogens accept the proton. The central hydrogens in metal-free compounds are acidic (N-acids) and the macrocycle can be deprotonated in basic solutions. Singlet oxygen production as well as fluorescence emission are strongly dependent on peripheral substituents, namely on the heteroatoms connecting the core with the substituents.

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Synthesis and Some Properties of Transition Metal Complexes with Octa(sulfophenyl)tetrapyrazinoporphyrazine

Cited by 9 publications

References 8 publications

Synthesis, Spectroscopy, Thermal Analysis, Magnetic Properties and Biological Activity Studies of Cu(II) and Co(II) Complexes with Schiff Base Dye Ligands

Synthesis, Spectroscopy, Thermal Analysis, Magnetic Properties and Biological Activity Studies of Cu(II) and Co(II) Complexes with Schiff Base Dye Ligands

Tetrapyrazinoporphyrazines and their metal derivatives. Part I: Synthesis and basic structural information

Azaphthalocyanines Containing Pyrazine Rings with Focus on the Alkylheteroatom, Aryl and Heteroaryl Substitution and Properties Important in Photodynamic Therapy

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