Tag: M.W=700-900

Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II), is researched, Molecular C48H38CoN4O4, CAS is 28903-71-1, about Molecular approach for engineering interfacial interactions in magnetic/topological insulator heterostructures.Product Details of 28903-71-1.

Controlling interfacial interactions in magnetic/topol. insulator heterostructures is a major challenge for the emergence of novel spin-dependent electronic phenomena. As for any rational design of heterostructures that rely on proximity effects, one should ideally retain the overall properties of each component while tuning interactions at the interface. However, in most inorganic interfaces, interactions are too strong, consequently perturbing, and even quenching, both the magnetic moment and the topol. surface states at each side of the interface. Here, we show that these properties can be preserved using ligand chem. to tune the interaction of magnetic ions with the surface states. By depositing Co-based porphyrin and phthalocyanine monolayers on the surface of Bi2Te3 thin films, robust interfaces are formed that preserve undoped topol. surface states as well as the pristine magnetic moment of the divalent Co ions. The selected ligands allow us to tune the interfacial hybridization within this weak interaction regime. These results, which are in stark contrast with the observed suppression of the surface state at the first quintuple layer of Bi2Se3 induced by the interaction with Co phthalocyanines, demonstrate the capability of planar metal-organic mols. to span interactions from the strong to the weak limit.

There is still a lot of research devoted to this compound(SMILES：COC1=CC=C(C=C1)C(C2=[N]3[Co+2]4([N-]56)[N-]7C(C(C8=CC=C(C=C8)OC)=C3C=C2)=CC=C7C(C9=CC=C(C=C9)OC)=C%10C=CC%11=[N]4%10)=C5C=CC6=C%11C%12=CC=C(C=C%12)OC)Product Details of 28903-71-1, and with the development of science, more effects of this compound(28903-71-1) can be discovered.

Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Recommanded Product: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II). So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II), is researched, Molecular C48H38CoN4O4, CAS is 28903-71-1, about Inductive and electrostatic effects on cobalt porphyrins for heterogeneous electrocatalytic carbon dioxide reduction.

Electrochem. carbon dioxide reduction enables conversion of carbon dioxide into fuels and chems. with renewable energy input. Cobalt-based mol. complexes have exhibited high selectivity, activity, and stability for transforming carbon dioxide into carbon monoxide. Through evaluating immobilized cobalt porphyrins functionalized with various peripheral substituents, we demonstrated that their activity is affected not only by the electronegativity of the substituents, but importantly, also by the charge of the substituents. The performance of immobilized cobalt porphyrins can be improved by introducing electron-donating and pos. charged functional groups. Through kinetic studies, we were able to understand the mechanism by which electron-donating groups enhance the observed rates of carbon dioxide reduction and how cationic functionality may contribute towards electrostatic stabilization of the intermediate formed in the rate-determining step. Our methodol. provides a robust and exptl.-verified method of computationally predicting the electronic effect of peripheral substitution and hence the catalytic activity of substituted porphyrins.

There is still a lot of research devoted to this compound(SMILES：COC1=CC=C(C=C1)C(C2=[N]3[Co+2]4([N-]56)[N-]7C(C(C8=CC=C(C=C8)OC)=C3C=C2)=CC=C7C(C9=CC=C(C=C9)OC)=C%10C=CC%11=[N]4%10)=C5C=CC6=C%11C%12=CC=C(C=C%12)OC)Recommanded Product: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II), and with the development of science, more effects of this compound(28903-71-1) can be discovered.

Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called 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, published in 2021-11-15, which mentions a compound: 28903-71-1, mainly applied to cobalt piperazine arylporphyin complex preparation crystal structure cyclic voltammetry; Hirshfeld surface analysis EPR fluorescence cobalt piperazine arylporphyin complex; adsorption degradation catalyst cobalt piperazine arylporphyin complex, Category: iodides-buliding-blocks.

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 IR, UV-visible, fluorescence, proton NMR, EPR as well as mass spectrometry. A cyclic voltammetry study 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 intermol. interactions were studied by Hirshfeld surface anal.

There is still a lot of research devoted to this compound(SMILES：COC1=CC=C(C=C1)C(C2=[N]3[Co+2]4([N-]56)[N-]7C(C(C8=CC=C(C=C8)OC)=C3C=C2)=CC=C7C(C9=CC=C(C=C9)OC)=C%10C=CC%11=[N]4%10)=C5C=CC6=C%11C%12=CC=C(C=C%12)OC)Category: iodides-buliding-blocks, and with the development of science, more effects of this compound(28903-71-1) can be discovered.

Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Safety of 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II). 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: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II), is researched, Molecular C48H38CoN4O4, CAS is 28903-71-1, about ZIF-8 MOF Encapsulated Co-porphyrin, an Efficient Electrocatalyst for Water Oxidation in a Wide pH Range: Works Better at Neutral pH. Author is Mukhopadhyay, Subhabrata; Basu, Olivia; Das, Samar K..

Water oxidation (WO) is the most important and thermodynamically challenging process associated with water splitting. Several metal porphyrins are reported to perform catalytic WO through the central metal but [5,10,15,20-tetrakis(4-methoxyphenyl)porphyrinato]cobalt(II) (abbreviated as CoTMPP), which is well-known for its ability to perform oxygen reduction reaction (ORR), lacks the capacity to perform WO. Here we have successfully activated CoTMPP towards electrochem. WO by means of its in situ encapsulation inside the cavity of a versatile metal organic framework (MOF), known as zeolitic imidazolate framework-8 (ZIF-8). The composite, thus prepared i. e., CoTMPP@ZIF-8 (abbreviated as CTMZ-8), behaves as a heterogeneous, robust, and efficient electrocatalyst for oxygen evolution reaction (OER) at a wide pH range (from acidic to neutral). Required overpotential (η) of 387.4 mV (neutral pH) and 562.7 mV (pH 2) and high turnover frequency (TOF) of 2.7 s-1 (at neutral pH) make this composite (CTMZ-8) an efficient electrocatalyst for WO. To the best of our knowledge, this is the first report of electrocatalytic WO by CoTMPP.

There is still a lot of research devoted to this compound(SMILES：COC1=CC=C(C=C1)C(C2=[N]3[Co+2]4([N-]56)[N-]7C(C(C8=CC=C(C=C8)OC)=C3C=C2)=CC=C7C(C9=CC=C(C=C9)OC)=C%10C=CC%11=[N]4%10)=C5C=CC6=C%11C%12=CC=C(C=C%12)OC)Safety of 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II), and with the development of science, more effects of this compound(28903-71-1) can be discovered.

Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Related Products of 28903-71-1. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II), is researched, Molecular C48H38CoN4O4, CAS is 28903-71-1, about C-O Bond Cleavage of Alcohols via Visible Light Activation of Cobalt Alkoxycarbonyls. Author is Chambers, Dana R.; Juneau, Antoine; Ludwig, Cory T.; Frenette, Mathieu; Martin, David B. C..

A strategy for the activation of C-O bonds in alcs. via a carbonylation-homolysis-decarboxylation process is described. Using readily available Co(II) porphyrin precursors, carbonylation of simple alcs. provides access to alkoxycarbonyl Co(III) complexes. Spectroscopic, crystallog., and computational methods were used to provide structural details and an estimate for the Co-C bond dissociation energy of an alkoxycarbonylcobalt(III) complex of 39.8 kcal/mol for the 1st time. Visible light irradiation in the presence of the radical trapping agent TEMPO and a thiol reducing agent demonstrates the cleavage of the alc. C-O bond under oxidative and reductive conditions, resp. Addition of a stoichiometric reducing agent allows the use of a catalytic amount of hindered thiol for the reduction of a benzylic alc. to the corresponding hydrocarbon.

There is still a lot of research devoted to this compound(SMILES：COC1=CC=C(C=C1)C(C2=[N]3[Co+2]4([N-]56)[N-]7C(C(C8=CC=C(C=C8)OC)=C3C=C2)=CC=C7C(C9=CC=C(C=C9)OC)=C%10C=CC%11=[N]4%10)=C5C=CC6=C%11C%12=CC=C(C=C%12)OC)Related Products of 28903-71-1, and with the development of science, more effects of this compound(28903-71-1) can be discovered.

Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Recommanded Product: 28903-71-1. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II), is researched, Molecular C48H38CoN4O4, CAS is 28903-71-1, about Pyrolyzed Co-Nx/C electrocatalysts supported on different carbon materials for oxygen reduction reaction in neutral solution. Author is Zhang, Lei; Ye, Daixin; Huang, Qiu-An; Zhao, Hongbin; Shao, Qinsi; Zhang, Jiujun.

In this work, a non-noble metal material, i.e., 5, 10, 15, 20-Tetrakis(4-methoxyphenyl)-21H, 23H-porphine cobalt(II) (CoTMPP), is chosen as the metal complex which adsorbs on three different carbon support materials, namely, black pearls 2000 (BP), ordered mesoporous carbon (MPC) and single layer graphene oxide (GO), to form CoTMPP/BP, CoTMPP/MPC, and CoTMPP/GO catalyst precursors, resp. These precursors are heat-treated at high temperatures to form Co-Nx/BP, Co-Nx/MPC, and Co-Nx/GO catalysts for ORR in neutral electrolyte solution, resp. Several characterization methods including XRD, SEM/TEM and XPS are employed. Electrochem. methods such as cyclic voltammetry (CV), rotating disk electrode (RDE) and rotating ring-disk electrode (RRDE) techniques are used to quant. measure the catalyzed ORR kinetic parameters. Effects of both carbon supports and heat-treatment temperature on the catalyst phys. properties and catalytic ORR activities were also studied. Regarding the catalytic ORR activity, the activity order was measured as: Co-Nx/BP > Co-Nx/MPC > Co-Nx/GO. The overall electron transfer number catalyzed by Co-Nx/BP is measured to be 4, while those by Co-Nx/MPC and Co-Nx/GO catalysts are 2-electron transfer pathways. Based on these measurements and our anal., an ORR mechanism is also proposed for facilitating further investigation and understanding.

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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Name: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II). 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: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II), is researched, Molecular C48H38CoN4O4, CAS is 28903-71-1, about Inductive and electrostatic effects on cobalt porphyrins for heterogeneous electrocatalytic carbon dioxide reduction. Author is Zhu, Minghui; Yang, Deng-Tao; Ye, Ruquan; Zeng, Joy; Corbin, Nathan; Manthiram, Karthish.

Electrochem. carbon dioxide reduction enables conversion of carbon dioxide into fuels and chems. with renewable energy input. Cobalt-based mol. complexes have exhibited high selectivity, activity, and stability for transforming carbon dioxide into carbon monoxide. Through evaluating immobilized cobalt porphyrins functionalized with various peripheral substituents, we demonstrated that their activity is affected not only by the electronegativity of the substituents, but importantly, also by the charge of the substituents. The performance of immobilized cobalt porphyrins can be improved by introducing electron-donating and pos. charged functional groups. Through kinetic studies, we were able to understand the mechanism by which electron-donating groups enhance the observed rates of carbon dioxide reduction and how cationic functionality may contribute towards electrostatic stabilization of the intermediate formed in the rate-determining step. Our methodol. provides a robust and exptl.-verified method of computationally predicting the electronic effect of peripheral substitution and hence the catalytic activity of substituted porphyrins.

If you want to learn more about this compound(5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II))Name: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II), you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(28903-71-1).

Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Formula: C48H38CoN4O4. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II), is researched, Molecular C48H38CoN4O4, CAS is 28903-71-1, about Axial ligands tailoring the ORR activity of cobalt porphyrin.

In an effort to provide visualization and understanding to the electronic “”push effect”” of axial ligands on the catalytic activity of cobalt macrocyclic mols., we design a simple model system involving an [5,10,15,20-tetrakis(4-methoxyphenyl)porphyrin]cobalt(II) (TMMPCo) monolayer axially-coordinated on thiol ligand modified Au electrode and explore the activity of the axial-ligand coordinated TMPPCo toward oxygen reduction reaction (ORR) in acidic medium. Three different ligands, with a decreasing order of coordinating ability as: 4-mercaptopyridine (MPy) > 4-aminothiolphenol (APT) > 4-mercaptobenzonitrile (MBN) are used and a maximum difference in ORR onset potential of 80 mV is observed between the MPy (highest onset potential) and MBN systems (lowest onset potential). The ORR activity of TMPPCo increases with the increase in binding strength of the axial ligand. A detailed mechanism study reveals that ORR on the three ligand coordinated TMPPCo systems shares the same 2-electron mechanism with H2O2 as the terminal product. Theor. calculation into the structure of the ligand coordinated cobalt porphyrins uncovers the variation in at. charge of the Co(II) center and altered frontier MO distribution among the three ligand systems. Both properties have great influence on the back-bonding formation between the Co(II) center and O2 mols., which has been suggested to be critical toward the O2 adsorption and subsequent activation process.

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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Shen, Hai-Min; Wang, Xiong; Ning, Lei; Guo, A-Bing; Deng, Jin-Hui; She, Yuan-Bin published an article about the compound: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II)( cas:28903-71-1,SMILESS:COC1=CC=C(C=C1)C(C2=[N]3[Co+2]4([N-]56)[N-]7C(C(C8=CC=C(C=C8)OC)=C3C=C2)=CC=C7C(C9=CC=C(C=C9)OC)=C%10C=CC%11=[N]4%10)=C5C=CC6=C%11C%12=CC=C(C=C%12)OC ).Reference of 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II). Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:28903-71-1) through the article.

The direct sources of aliphatic acids in cycloalkanes oxidation were investigated, and a strategy to suppress the formation of aliphatic acids was adopted through enhancing the catalytic transformation of oxidation intermediates cycloalkyl hydroperoxides to cycloalkanols by Zn(II) and delaying the emergence of cycloalkanones. Benefitted from the delayed formation of cycloalkanones and suppressed non-selective thermal decomposition of cycloalkyl hydroperoxides, the conversion of cycloalkanes and selectivity towards cycloalkanols and cycloalkanones were increased simultaneously with satisfying tolerance to both of metalloporphyrins and substrates. For cyclohexane, the selectivity towards KA-oil was increased from 80.1% to 96.9% meanwhile the conversion was increased from 3.83% to 6.53%, a very competitive conversion level with higher selectivity compared with current industrial process.

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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Effect of N,N,N’-trimethylpiperazinium (TMP+) cations on magnetic properties and dimerization of fullerenes in the (TMP+)(CoIIporphyrin)(C-60) salts》. Authors are Konarev, Dmitri V.; Khasanov, Salavat S.; Lyubovskaya, Rimma N..The article about the compound:5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II)cas:28903-71-1,SMILESS:COC1=CC=C(C=C1)C(C2=[N]3[Co+2]4([N-]56)[N-]7C(C(C8=CC=C(C=C8)OC)=C3C=C2)=CC=C7C(C9=CC=C(C=C9)OC)=C%10C=CC%11=[N]4%10)=C5C=CC6=C%11C%12=CC=C(C=C%12)OC).Electric Literature of C48H38CoN4O4. Through the article, more information about this compound (cas:28903-71-1) is conveyed.

New salts of fullerene C•-60 radical anions with N,N,N’-trimethylpiperazinium cations (TMP+) containing neutral cobalt(II) porphyrin mols.: {(TMP+)·CoIIOEP}·(C•-60)·2C6H4Cl2·C6H5CN (1) and (TMP+)3{CoIITMPP·(C-60)}2(C•-60) ·C6H4Cl2·C6H5CN (2) were obtained (OEP and TMPP are octaethyl- or tetrakis(4-methoxyphenyl)porphyrins, resp.). In these salts the C•-60 radical anions or the TMP+ cations with free nitrogen atom can coordinate to cobalt(II) porphyrins and form Co-C(C-60) or Co-N(TMP+) bonds. The properties of these salts and the possibility of fullerene dimerization depend on type of bonds formed. For example, TMP+ cations in 1 form coordination (TMP+)·CoIIOEP assemblies preserving free nonbonded C•-60 radical anions. They are effectively coupled with S = 1/2 spins localized on CoIIOEP (Weiss temperature is -27 K and decrease of magnetic moment of 1 is observed <150 K). Previously the {(MDABCO+)·CoIITMPP}2·(C-60)2·(C6H4Cl2)2.5·(C6H5CN)1.5 salt was obtained in which doubly-bonded (C-60)2 dimers were found. In contrast to this salt, TMP+ cations in 2 preserved uncoordinated allowing the formation of the Co-C(C-60) bond of 2.273(3) Å length in the diamagnetic σ-bonded CoIITMPP·(C-60) anions. In coordinated state, fullerene anions cannot dimerize in 2 in spite of that their mutual arrangement and short interfullerene distances are favorable for such dimerization. Thus, variation of cations in the (Cation+)(CoIIporphytin)(C-60) salts drastically affects their properties and allows one to control dimerization of fullerene anions. Here is a brief introduction to this compound(28903-71-1)Electric Literature of C48H38CoN4O4, if you want to know about other compounds related to this compound(28903-71-1), you can read my other articles.

Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com