Redox and spectral properties of [Ru(trpy)L(H2O)](ClO4)2 [trpy = 2,2′:66″-terpyridine L = 4,4′-(OMe)2bpy; 4,4′-(NO2)2bpy]: A comparative computational study

Electrocatalytic Oxidation of Organic Substrates at Carbon Electrodes Modified with a Ruthenium-Containing Azo Phenol Polymer

“…Observed that the Ru II/III and Ru III/IV couples are not well defined. And this behavior can be associated to the favorable dislocation of the equilibrium to the (Ru IV = O) 2+ oxo-species: 50 (Ru III −OH) 2+ → ← (Ru IV =O) 2+ [1] Figure 4b shows the peaks corresponding to the redox process that occur above +0.90 V, according to the phenol mechanism polymerization proposed in the literature, 54 which is less positive than the potential range corresponding to the phenol polymerization. Figure 4a shows that phenolic portion oxidation occurs in a lower potential range (+0.5 to +0.9 V), thus the polymerization process of this monomer can be accomplished by anodic scans in a less positive range compared with the anodic interval that corresponds to ruthenium discharges or transitions.…”

“…[25][26][27][28][29][30] They are capable of oxidizing C-H bonds adjacent to unsaturated bonds to yield alcohols, ketones, aldehydes and carboxylic acids. [47][48][49][50][51][52][53] The aim of this study is the preparation of the ruthenium cis-[Ru(BAP)(bpy)(PPh 3 )(OH 2 )](ClO 4 ) 2 complex linked to a phenol film and recovery of different electrode surfaces, which act as heterogeneous catalysts for the oxidation of various organic compounds. The catalytic activity of these new electrodes modified by a ruthenium-azo phenol polymer was tested in selective electro oxidations, in a large class of organic substrates by potentiostatic electrolysis.…”

Electrocatalytic Oxidation of Organic Substrates at Carbon Electrodes Modified with a Ruthenium-Containing Azo Phenol Polymer

“…Observed that the Ru II/III and Ru III/IV couples are not well defined. And this behavior can be associated to the favorable dislocation of the equilibrium to the (Ru IV = O) 2+ oxo-species: 50 (Ru III −OH) 2+ → ← (Ru IV =O) 2+ [1] Figure 4b shows the peaks corresponding to the redox process that occur above +0.90 V, according to the phenol mechanism polymerization proposed in the literature, 54 which is less positive than the potential range corresponding to the phenol polymerization. Figure 4a shows that phenolic portion oxidation occurs in a lower potential range (+0.5 to +0.9 V), thus the polymerization process of this monomer can be accomplished by anodic scans in a less positive range compared with the anodic interval that corresponds to ruthenium discharges or transitions.…”

“…[25][26][27][28][29][30] They are capable of oxidizing C-H bonds adjacent to unsaturated bonds to yield alcohols, ketones, aldehydes and carboxylic acids. [47][48][49][50][51][52][53] The aim of this study is the preparation of the ruthenium cis-[Ru(BAP)(bpy)(PPh 3 )(OH 2 )](ClO 4 ) 2 complex linked to a phenol film and recovery of different electrode surfaces, which act as heterogeneous catalysts for the oxidation of various organic compounds. The catalytic activity of these new electrodes modified by a ruthenium-azo phenol polymer was tested in selective electro oxidations, in a large class of organic substrates by potentiostatic electrolysis.…”

Modified electrodes prepared with polyphenolic film containing ruthenium complex and metal ligand anchored by azo covalent bond

“…The oxidation of cycle-hexenol had an excellent yield to form cycle-hexenone, and toluene produced benzoic acid, as expected. Table 1 shows that the yields obtained for the substrates studied in this work were most of the time better than those obtained using similar ruthenium catalysts, either mixed homogeneously [14][15][16][17][18][19] or supported in a carbon paste electrode. 18 An important advantage of the catalyst immobilized on the ME is that it can be easily removed from the reaction vessel, it can be fully recovered, and the products can be extracted in a conventional way.…”

“…[10][11][12][13] Phenyl allyl ethers derived from aromatic phenols can be easily electrochemically polymerized on carbon electrodes to produce a modified electrode with good mechanical and chemical stability. 6,[14][15][16][17][18][19] The electropolymerization of the monomer to form this type of film can be performed by doing scans within a potential interval less positive than the oxidation potential of the functional group to preserve the key moiety.Modified electrodes (ME) can also be prepared using phenol compounds functionalized with azo groups as the key structure to anchor a variety of ligands which can be used Steter et al 661 Vol. 19, No.…”

Kinetic study of 2-propanol and benzyl alcohol oxidation by alkaline hexacyanoferrate(III) catalyzed by a terpyridyl ruthenium complex

“…Alcohol oxidation by the protonated intermediate is more likely a two-electron process to produce a Ru II intermediate, as shown in Eq. (7). The specifics of this reaction will be addressed later in this discussion.…”

Electrocatalytic Oxidation of Organic Substrates at Carbon Electrodes Modified with a Ruthenium-Containing Azo Phenol Polymer

“…Observed that the Ru II/III and Ru III/IV couples are not well defined. And this behavior can be associated to the favorable dislocation of the equilibrium to the (Ru IV = O) 2+ oxo-species: 50 (Ru III −OH) 2+ → ← (Ru IV =O) 2+ [1] Figure 4b shows the peaks corresponding to the redox process that occur above +0.90 V, according to the phenol mechanism polymerization proposed in the literature, 54 which is less positive than the potential range corresponding to the phenol polymerization. Figure 4a shows that phenolic portion oxidation occurs in a lower potential range (+0.5 to +0.9 V), thus the polymerization process of this monomer can be accomplished by anodic scans in a less positive range compared with the anodic interval that corresponds to ruthenium discharges or transitions.…”

“…[25][26][27][28][29][30] They are capable of oxidizing C-H bonds adjacent to unsaturated bonds to yield alcohols, ketones, aldehydes and carboxylic acids. [47][48][49][50][51][52][53] The aim of this study is the preparation of the ruthenium cis-[Ru(BAP)(bpy)(PPh 3 )(OH 2 )](ClO 4 ) 2 complex linked to a phenol film and recovery of different electrode surfaces, which act as heterogeneous catalysts for the oxidation of various organic compounds. The catalytic activity of these new electrodes modified by a ruthenium-azo phenol polymer was tested in selective electro oxidations, in a large class of organic substrates by potentiostatic electrolysis.…”

Modified electrodes prepared with polyphenolic film containing ruthenium complex and metal ligand anchored by azo covalent bond

“…The oxidation of cycle-hexenol had an excellent yield to form cycle-hexenone, and toluene produced benzoic acid, as expected. Table 1 shows that the yields obtained for the substrates studied in this work were most of the time better than those obtained using similar ruthenium catalysts, either mixed homogeneously [14][15][16][17][18][19] or supported in a carbon paste electrode. 18 An important advantage of the catalyst immobilized on the ME is that it can be easily removed from the reaction vessel, it can be fully recovered, and the products can be extracted in a conventional way.…”

“…[10][11][12][13] Phenyl allyl ethers derived from aromatic phenols can be easily electrochemically polymerized on carbon electrodes to produce a modified electrode with good mechanical and chemical stability. 6,[14][15][16][17][18][19] The electropolymerization of the monomer to form this type of film can be performed by doing scans within a potential interval less positive than the oxidation potential of the functional group to preserve the key moiety.Modified electrodes (ME) can also be prepared using phenol compounds functionalized with azo groups as the key structure to anchor a variety of ligands which can be used Steter et al 661 Vol. 19, No.…”

Kinetic study of 2-propanol and benzyl alcohol oxidation by alkaline hexacyanoferrate(III) catalyzed by a terpyridyl ruthenium complex

“…Alcohol oxidation by the protonated intermediate is more likely a two-electron process to produce a Ru II intermediate, as shown in Eq. (7). The specifics of this reaction will be addressed later in this discussion.…”

Electrocatalytic Oxidation of Organic Substrates at Carbon Electrodes Modified with a Ruthenium-Containing Azo Phenol Polymer

“…Observed that the Ru II/III and Ru III/IV couples are not well defined. And this behavior can be associated to the favorable dislocation of the equilibrium to the (Ru IV = O) 2+ oxo-species: 50 (Ru III −OH) 2+ → ← (Ru IV =O) 2+ [1] Figure 4b shows the peaks corresponding to the redox process that occur above +0.90 V, according to the phenol mechanism polymerization proposed in the literature, 54 which is less positive than the potential range corresponding to the phenol polymerization. Figure 4a shows that phenolic portion oxidation occurs in a lower potential range (+0.5 to +0.9 V), thus the polymerization process of this monomer can be accomplished by anodic scans in a less positive range compared with the anodic interval that corresponds to ruthenium discharges or transitions.…”

“…[25][26][27][28][29][30] They are capable of oxidizing C-H bonds adjacent to unsaturated bonds to yield alcohols, ketones, aldehydes and carboxylic acids. [47][48][49][50][51][52][53] The aim of this study is the preparation of the ruthenium cis-[Ru(BAP)(bpy)(PPh 3 )(OH 2 )](ClO 4 ) 2 complex linked to a phenol film and recovery of different electrode surfaces, which act as heterogeneous catalysts for the oxidation of various organic compounds. The catalytic activity of these new electrodes modified by a ruthenium-azo phenol polymer was tested in selective electro oxidations, in a large class of organic substrates by potentiostatic electrolysis.…”

Modified electrodes prepared with polyphenolic film containing ruthenium complex and metal ligand anchored by azo covalent bond

“…The oxidation of cycle-hexenol had an excellent yield to form cycle-hexenone, and toluene produced benzoic acid, as expected. Table 1 shows that the yields obtained for the substrates studied in this work were most of the time better than those obtained using similar ruthenium catalysts, either mixed homogeneously [14][15][16][17][18][19] or supported in a carbon paste electrode. 18 An important advantage of the catalyst immobilized on the ME is that it can be easily removed from the reaction vessel, it can be fully recovered, and the products can be extracted in a conventional way.…”

“…[10][11][12][13] Phenyl allyl ethers derived from aromatic phenols can be easily electrochemically polymerized on carbon electrodes to produce a modified electrode with good mechanical and chemical stability. 6,[14][15][16][17][18][19] The electropolymerization of the monomer to form this type of film can be performed by doing scans within a potential interval less positive than the oxidation potential of the functional group to preserve the key moiety.Modified electrodes (ME) can also be prepared using phenol compounds functionalized with azo groups as the key structure to anchor a variety of ligands which can be used Steter et al 661 Vol. 19, No.…”

Kinetic study of 2-propanol and benzyl alcohol oxidation by alkaline hexacyanoferrate(III) catalyzed by a terpyridyl ruthenium complex

“…Alcohol oxidation by the protonated intermediate is more likely a two-electron process to produce a Ru II intermediate, as shown in Eq. (7). The specifics of this reaction will be addressed later in this discussion.…”