55915-17-8Relevant articles and documents
Spectroscopic characterization, X-ray molecular structures and cyclic voltammetry study of two (piperazine) cobalt(II) meso-arylporphyin complexes. Application as a catalyst for the degradation of 4-nitrophenol
Guergueb, Mouhieddinne,Nasri, Soumaya,Brahmi, Jihed,Al-Ghamdi, Youssef O.,Loiseau, Frédérique,Molton, Florian,Roisnel, Thierry,Guerineau, Vincent,Nasri, Habib
, (2021/10/01)
Two new cobaltous-porphyrin complexes, namely (μ-piperazine)-bis[(meso-tetra(para-methoxyphenyl)porphyrinato)]cobalt(II) and (piperazine)[meso-tetra(para-chlorophenyl)porphyrin]cobalt(II) dichloromethane disolvate, with the formulas [{CoII(TMPP)}2(μ2-pipz)] (complex 1) and [CoII(TClPP)(pipz)]·2CH2Cl2 (complex 2), were used efficiently as catalysts in the degradation of 4-nitrophenol (4-NP) in an aqueous hydrogen peroxide solution. These cobalt(II)-pipz porphyrin complexes were characterized by a variety of spectroscopic methods including infrared, UV–visible, fluorescence, proton nuclear magnetic resonance, electron paramagnetic resonance (EPR) as well as mass spectrometry. A cyclic voltammetry investigation was also carried out on these two Co(II) metalloporphyrins. The EPR results indicate that both complexes 1 and 2 are paramagnetic low-spin (S = 1/2) cobalt(II) porphyrin complexes. Furthermore, the X-ray diffraction crystal structures of 1 and 2 were determined, and the intermolecular interactions were investigated by Hirshfeld surface analysis.
Co(II)-porphyrin complexes with nitrogen monoxide and imidazole: synthesis, optimized structures, electrochemical behavior and photochemical stability
Kaigorodova, Elena Yu.,Mamardashvili, Galina M.,Simonova, Olga R.,Chizhova, Nataliya V.,Mamardashvili, Nugzar Zh.
, p. 2443 - 2462 (2021/11/10)
UV-vis and 1H-NMR spectroscopy were applied to study axial coordination of imidazole (L1) and nitrogen monoxide (L2) with CoII-porphyrins (CoIIP) containing halogen substituents in the pyrrole and meso-phenyl positions of
Method for synthesizing tetraaryl cobalt porphyrin through synchronous cyclization and metallization
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Paragraph 0042; 0043, (2020/09/08)
The invention discloses a method for synthesizing tetraaryl cobalt porphyrin through synchronous cyclization and metallization. Under the catalysis of anhydrous aluminum trichloride, aromatic aldehyde, pyrrole and cobalt salt are subjected to cyclization and metallization reactions synchronously in a DMF solvent and a nitrogen atmosphere to generate the tetraaryl cobalt porphyrin. The reaction process comprises the following steps: sequentially adding anhydrous aluminum trichloride, aryl aldehyde, pyrrole and cobalt salt into DMF while stirring, stopping reaction after heating reflux reactionfor a certain time, cooling, standing overnight near 273K, and carrying out suction filtration to obtain cobalt porphyrin crystals. According to the method, the aromatic aldehyde, the pyrrole and thecobalt salt are directly used as raw materials, porphin is not needed, strongly corrosive organic acid is not used as a solvent, high-purity tetraaryl cobalt porphyrin is obtained at a high yield under the condition that a complex separation means is not needed, and industrial production is easy to achieve.