HPLC of Formula: 56413-95-7. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 5,6-Dichloropyrazine-2,3-dicarbonitrile, is researched, Molecular C6Cl2N4, CAS is 56413-95-7, about Tetra[6,7]quinoxalinoporphyrazines: the effect of an additional benzene ring on photophysical and photochemical properties. Author is Novakova, Veronika; Zimcik, Petr; Miletin, Miroslav; Kopecky, Kamil; Musil, Zbynek.
Tetrapyrazinophthalocyanines (or tetra[6,7]quinoxalinoporphyrazines, 6,7-TQP) and tetrapyrazinoporphyrazines (TPP), bearing carboxy, alkyl, amino, alkylthio and phenolato substituents were prepared as their zinc complexes by macrocyclization of the corresponding 2,3-disubstituted 6,7-quinoxalinodinitriles and 5,6-disubstituted 2,3-pyrazinedinitriles, resp. Synthetic methods for preparation of the precursor dinitriles were developed. Photophys. and photochem. properties of 6,7-TQP were compared with tetrapyrazinoporphyrazines (TPP) bearing the same peripheral substituents to disclose the effect of insertion of a benzene ring between the pyrazine and porphyrazine moieties. The influence of the peripheral heteroatom in the group of 6,7-TQP is also discussed. Prepared 6,7-TQP have their main absorption band (Q-band) strongly batho- and hyperchromically shifted (λmax = 730-770 nm in pyridine, ε up to 500000 dm3 mol-1cm-1) in comparison to TPP. They showed high singlet oxygen quantum yields (ΦΔ = 0.50-0.74) and relatively low fluorescence quantum yields (ΦF < 0.08). Although many compounds look similar to this compound(56413-95-7)HPLC of Formula: 56413-95-7, numerous studies have shown that this compound(SMILES:N#CC1=NC(Cl)=C(Cl)N=C1C#N), has unique advantages. If you want to know more about similar compounds, you can read my other articles.
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Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate