Regularities of Coordination Reaction between Cobalt(III) 5,15-Diphenyl­octaalkylporphyrin and Organic Bases

Зайцева, С. В.; Зданович, С. А.; Койфман, О. И.

doi:10.6060/mhc2012.111149z

Cited by 8 publications

(6 citation statements)

References 8 publications

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“…The rigidly spatially ori ented lone electron pair of the N (3) pyridine nitrogen atom can participate in protonation (logB 1 lies within a range of 7-7.7, where B 1 is the imidazole protona tion constant) and in coordination of metal ions. 2 Methylimidazole, a substituted imidazole forms less stable complexes in comparison with imida zole due to the steric hindrances created by the substit uent [19]. Thermal, thermogravimetric, and elemental analy ses, potentiometry, photometry, spectrophotometry, and IR spectroscopy were used to analyze the synthe sized salts, to study their properties, and to establish the composition and stability of mixed ligand com plexes in solution.…”

Section: Hooc Coohmentioning

confidence: 99%

Cobalt(II) and copper(II) complexes with carboxylic acids, imidazole, and 2-methylimidazole

Скорик

Filippova

Bukhol’tseva

et al. 2015

Russ. J. Inorg. Chem.

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The compositions of [MIm(MeIm) x ]L complexes synthesized by the reaction of cobalt(II) and copper(II) fumarates ML · nH 2 O with imidazole (Im) and 2 methylimidazole (MeIm) were determined. The thermal decomposition of the salts was analyzed, and the pyridine nitrogen atom of imidazole and the oxygen atoms of carboxyl anions were shown to participate in complexation using electronic absorption spectra and IR spectra. The composition and stability of cobalt(II) and copper(II) imidazolatesuccinate complexes in an aqueous solution were determined photometrically and spectrophotometrically, and their higher stability in comparison with monoligand complexes was demonstrated.

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Section: Hooc Coohmentioning

confidence: 99%

Cobalt(II) and copper(II) complexes with carboxylic acids, imidazole, and 2-methylimidazole

Скорик

Filippova

Bukhol’tseva

et al. 2015

Russ. J. Inorg. Chem.

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“…The latter forms salts of another composition and less stable complexes in solution as compared with imidazole due to the presence of substituent in molecule [13].…”

Section: Methodsmentioning

confidence: 99%

Reaction of Imidazole and 2-Methylimidazole with Copper(II) Salts and Certain Acids

Скорик

Il’ina

Козик

2021

Russ. J. Inorg. Chem.

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Composition of biligand compounds Cu(C 3 H 4 N 2 , C 4 H 6 N 2 ) x ( ) 2 • nH 2 O obtained by reaction of aqueous suspensions of prepared poorly soluble copper(II) benzoate Cu(C 7 H 5 O 2 ) 2 • 3H 2 O and nicotinate Cu(C 6 H 4 NO 2 ) 2 • H 2 O with imidazole and 2-methylimidazole has been determined. Mono-and biligand salts have been analyzed and their thermal decomposition has been studied. IR spectroscopy has shown the participation of pyridine nitrogen of imidazole and carboxylic groups of aromatic acids in binding to copper(II) ion. Composition and stability of copper(II) benzoate complex, solubility constant for salt Cu(C 7 H 5 O 2 ) 2 • 3H 2 O at ionic strength I = 0.1 have been determined by solubility method, pH potentiometry, and photometry. Co-crystals/salts of composition C 3 H 4 N 2 • C 7 H 6 O 2 (pH 8.0), C 3 H 4 N 2 • C 6 H 5 NO 2 (pH 7.4) and 3(C 4 H 6 N 2 ) • C 19 H 19 O 6 N 7 • 2H 2 O (pH ~7) have been prepared and studied by thermogravimetric analysis. X-ray powder diffractograms have been recorded for initial compounds and their reaction products (imidazole-benzoic acid, 2-methylimidazole-folic acid systems).

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“…The nitrogen N(3) atom with an unshared electron pair is capable of protonation (lgB1 has values in the range of 7-7.7; B1 is the constant of imidazole protonization) and the coordination of metal ions. The compound 2-methylimidazole C4H6N2 forms less stable complexes than imidazole because of emerging steric hindrances owing to a substituent [24].…”

Section: Himmentioning

confidence: 99%

Interaction of Copper(II) Ions with Certain Oxyacids and Azoles

Skorik,

Tomilova,

Pastushchak

et al. 2023

Inorganics

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Compounds composed of [[Cu(HIm, metIm)2‒3L] ∙ nH2O (n = 0, 2) were obtained during the interaction of slightly soluble tartrate and copper(II) salicylate composed of CuL ∙ nH2O (n = 1–2, L2−—Tar2−, Sal2−) with imidazole (HIm) and 2-methylimidazole (metIm). Mono- and bi-ligand salts were analyzed; the process of their thermal decomposition was studied. The solubility constants KS of the CuC4H4O6 ∙ 2H2O tartrate and CuC7H4O3 ∙ H2O salicylate of copper(II) with at ionic strength of 0.3 were determined. The IR spectroscopy method showed the participation in complexation of the nitrogen atom N(3) of imidazole and the oxygen atoms of the carboxyl groups of oxyacids, as well as the hydroxyl group of salicylic acid in the mixed-ligand salts of copper(II). The compositions and stability of the imidazole-tartrate(salicylate) copper(II) complexes in an aqueous solution were determined by performing photometry and spectrophotometry and of the monoligand complexes [CuTar] and [CuSal] were determined by solubility and isomolar series methods.

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Regularities of Coordination Reaction between Cobalt(III) 5,15-Diphenyloctaalkylporphyrin and Organic Bases

Abstract: The process of molecular interaction of cobalt (III)

Cited by 8 publications

References 8 publications

Cobalt(II) and copper(II) complexes with carboxylic acids, imidazole, and 2-methylimidazole

Cobalt(II) and copper(II) complexes with carboxylic acids, imidazole, and 2-methylimidazole

Reaction of Imidazole and 2-Methylimidazole with Copper(II) Salts and Certain Acids

Interaction of Copper(II) Ions with Certain Oxyacids and Azoles

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Regularities of Coordination Reaction between Cobalt(III) 5,15-Diphenyl­octaalkylporphyrin and Organic Bases

Abstract: The process of molecular interaction of cobalt (III)

Cited by 8 publications

References 8 publications

Cobalt(II) and copper(II) complexes with carboxylic acids, imidazole, and 2-methylimidazole

Cobalt(II) and copper(II) complexes with carboxylic acids, imidazole, and 2-methylimidazole

Reaction of Imidazole and 2-Methylimidazole with Copper(II) Salts and Certain Acids

Interaction of Copper(II) Ions with Certain Oxyacids and Azoles

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Regularities of Coordination Reaction between Cobalt(III) 5,15-Diphenyloctaalkylporphyrin and Organic Bases