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Radical Complex sentence examples within porphyrin π cation

porphyrin π cation

We synthesize oxoiron(IV) porphyrin π-cation radical complexes (1-CompI and 2-CompI) having the n-hexyl side chains.

Significant Solvent Effect on Reactivity of Oxoiron(IV) Porphyrin π-Cation Radical Complex: Activation in n-Alkane Solvent.

porphyrin π cation

To reveal the chemical and biological function of native hemes, we compare the reactivity of the oxoiron(IV) porphyrin π-cation radical complex (Compound I) of TMP (TMP-I) with that of TMTMP (TMTMP-I) for epoxidation, hydrogen abstraction, hydroxylation, sulfoxidation, and demethylation reactions.

meso-Substitution Activates Oxoiron(IV) Porphyrin π-Cation Radical Complex More Than Pyrrole-β-Substitution for Atom Transfer Reaction.

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Radical Complex sentence examples within Imidazolyl Radical Complex

Imidazolyl Radical Complex

We herein report a novel biphotochromic molecule composed of two fast negative photochromic phenoxyl-imidazolyl radical complex units showing incident light intensity dependence of the photochemical reaction.

Visible light intensity dependent negative photochromism of a binaphthyl-bridged phenoxyl-imidazolyl radical complex.

Imidazolyl Radical Complex

The development of the phenoxyl–imidazolyl radical complex (PIC), which generates two nonequivalent radicals upon light irradiation along with the fast photochemical reaction, is crucial for photoresponsive materials.

Molecular design to increase the photosensitivity of photochromic phenoxyl–imidazolyl radical complexes

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Radical Complex sentence examples within Cation Radical Complex

Cation Radical Complex

We report the synthesis, characterization, and electron-transfer (ET) oxidation reactivity of a chromium(V)–oxo TAML cation radical complex binding Sc3+ ion, {[CrV(O)(TAML•+)]-Sc3+}3+ (2-Sc).

A Highly Reactive Chromium(V)–Oxo TAML Cation Radical Complex in Electron Transfer and Oxygen Atom Transfer Reactions

Cation Radical Complex

We synthesize oxoiron(IV) porphyrin π-cation radical complexes (1-CompI and 2-CompI) having the n-hexyl side chains.

Significant Solvent Effect on Reactivity of Oxoiron(IV) Porphyrin π-Cation Radical Complex: Activation in n-Alkane Solvent.

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Radical Complex sentence examples within Phenoxyl Radical Complex

Phenoxyl Radical Complex

The formation of the NiII-phenoxyl radical complex by O2 was observed in the reaction of this complex in the solid state.

Formation of Ni(II)-phenoxyl radical complexes by O2: a mechanistic insight into the reaction of Ni(II)-phenol complexes with O2.

Phenoxyl Radical Complex

Phenoxyl radical complexes were generated in solution via chemical oxidation using ceric ammonium nitrate (CAN) and the redox properties were examined through cyclic voltammetric measurements.

Oxidative cyclization and synthesis of benzoxazole derivatives and hydrolytic phosphatase activity studies on dinuclear diphenoxo-bridged zinc(II)complexes

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Radical Complex sentence examples within Nitrene Radical Complex

Nitrene Radical Complex

The key carbene, mono- and bis-nitrene radical complexes coordinated to [Co(TPP)] (TPP = tetraphenylporphyrin) have previously been investigat-ed with a variety of experimental techniques and supporting (single-reference) DFT calculations that indicated doublet (S = ½) ground states for all three species.

Revisiting the Electronic Structure of Cobalt-Porphyrin Nitrene and Carbene Radicals with NEVPT2-CASSCF Calculations: Doublet versus Quartet Ground States

Nitrene Radical Complex

Reaction of the cobalt(III)-TAML complexes with PhINNs as a nitrene precursor leads to TAML-centered oxidation and produces nitrene radical complexes without oxidation of the metal ion.

Ligand Redox Noninnocence in [CoIII(TAML)]0/– Complexes Affects Nitrene Formation

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10.4236/ojic.2021.113006

Two new M(II)-radical complexes [M(hfac)2(IM-o-QN)] (M = Ni(1), Zn(2); IM-o-QN = 4'-quinoxalinyl-substituted imino nitroxide; hfac = hexafluoroa-cetylacetonate) have been synthesized and characterized by X-ray diffraction analysis, element analyses, IR and UV-Visible spectroscopy.

Synthesis and Crystal Structures of Two Metal-Radical Complexes

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10.1039/d0cp04453a

Here, we theoretically designed a metalloradical complex Co-C˙Ph3 with the triplet characters through the transition metal cobalt (Co0) coordinating a triphenylmethyl radical.

Metalloradical complex Co-C˙Ph3 catalyzes the CO2 reduction in gas phase: a theoretical study.

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10.1016/J.JPHOTOCHEM.2021.113440

In addition to the direct release of the NO3 radicals, a part of the light-excited CAN molecules were found to form the radical complex [(NH4)2CeIII(NO3)5…NO3 ], which lifetime is ca.

Photochemistry of cerium(IV) ammonium nitrate (CAN) in acetonitrile

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10.1016/J.PHYSB.2020.412700

The natural population and Bader's charge analysis are used to understand the charge transfer between the Li+ ion and graphene–radical complexes and calculate the theoretical specific capacity of the anode.

Enhanced Li+ ion adsorption on pristine and defected graphene via organic radical interaction – A DFT study

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10.1021/acsomega.1c02201

The reaction of LZnI (L = HC[C(Me)N(2,6-iPr2C6H3)]2) with NaB(C6F5)4 in the presence of bpy yielded [LZn(bpy)][B(C6F5)4] (1), with bpy serving as a neutral ligand, whereas reduction reactions of LZnI with 1 or 2 equiv of KC8 in the presence of bpy gave the radical complex LZn(bpy) (2) and [2.

Redox Activity of Noninnocent 2,2′-Bipyridine in Zinc Complexes: An Experimental and Theoretical Study

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10.1021/jacs.1c04149

Both the sign and intensity of photoinduced electron spin polarization (ESP) in the electronic ground state doublet (2S0/D0) of chromophore-radical complexes can be controlled by changing the nature of the metal ion.

Metal Ion Control of Photoinduced Electron Spin Polarization in Electronic Ground States.

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10.1039/d1cp01596f

It was revealed that the radical complex is composed of two chemically equivalent aluminum cations and two catechol-like ligands with the unpaired electron uniformly distributed between the two organic molecules.

o-Semiquinone radical anion isolated as an amorphous porous solid.

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10.3390/M1182

An [Ru(apy)2Cl2] precursor (apy = 2,2′-azopyridine) in 2-methoxyethanol was heated under a pressurized CO atmosphere to afford a diradical complex, [Ru(apy·−)2(CO)2], containing one-electron-reduced azo anion radical ligands.

Cis-Bis(2,2′-Azopyridinido)dicarbonylruthenium(II)

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10.1039/d0cy02329a

This peculiar ligands combination is herein exploited to tune the electrochemistry of the corresponding complexes: NHCs regulate the anodic process in a suitable potential region for oxidation of water to O2 and cyclopentadienone promotes a mono-electronic redox process through the formation of a radical complex (1˙).

Cyclopentadienone–NHC iron(0) complexes as low valent electrocatalysts for water oxidation

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What is/are Radical Complex?

Radical Complex - Two new M(II)-radical complexes [M(hfac)2(IM-o-QN)] (M = Ni(1), Zn(2); IM-o-QN = 4'-quinoxalinyl-substituted imino nitroxide; hfac = hexafluoroa-cetylacetonate) have been synthesized and characterized by X-ray diffraction analysis, element analyses, IR and UV-Visible spectroscopy. [1] Here, we theoretically designed a metalloradical complex Co-C˙Ph3 with the triplet characters through the transition metal cobalt (Co0) coordinating a triphenylmethyl radical. [2] In addition to the direct release of the NO3 radicals, a part of the light-excited CAN molecules were found to form the radical complex [(NH4)2CeIII(NO3)5…NO3 ], which lifetime is ca. [3] The natural population and Bader's charge analysis are used to understand the charge transfer between the Li+ ion and graphene–radical complexes and calculate the theoretical specific capacity of the anode. [4] The reaction of LZnI (L = HC[C(Me)N(2,6-iPr2C6H3)]2) with NaB(C6F5)4 in the presence of bpy yielded [LZn(bpy)][B(C6F5)4] (1), with bpy serving as a neutral ligand, whereas reduction reactions of LZnI with 1 or 2 equiv of KC8 in the presence of bpy gave the radical complex LZn(bpy) (2) and [2. [5] Both the sign and intensity of photoinduced electron spin polarization (ESP) in the electronic ground state doublet (2S0/D0) of chromophore-radical complexes can be controlled by changing the nature of the metal ion. [6] It was revealed that the radical complex is composed of two chemically equivalent aluminum cations and two catechol-like ligands with the unpaired electron uniformly distributed between the two organic molecules. [7] An [Ru(apy)2Cl2] precursor (apy = 2,2′-azopyridine) in 2-methoxyethanol was heated under a pressurized CO atmosphere to afford a diradical complex, [Ru(apy·−)2(CO)2], containing one-electron-reduced azo anion radical ligands. [8] This peculiar ligands combination is herein exploited to tune the electrochemistry of the corresponding complexes: NHCs regulate the anodic process in a suitable potential region for oxidation of water to O2 and cyclopentadienone promotes a mono-electronic redox process through the formation of a radical complex (1˙). [9]

porphyrin π cation

We synthesize oxoiron(IV) porphyrin π-cation radical complexes (1-CompI and 2-CompI) having the n-hexyl side chains. [1] To reveal the chemical and biological function of native hemes, we compare the reactivity of the oxoiron(IV) porphyrin π-cation radical complex (Compound I) of TMP (TMP-I) with that of TMTMP (TMTMP-I) for epoxidation, hydrogen abstraction, hydroxylation, sulfoxidation, and demethylation reactions. [2] Oxoiron(IV) porphyrin π-cation radical complexes (Compound I) of 1 (1-CompI) and 2 (2-CompI) are soluble in most organic solvents, allowing direct comparison of their electronic structure and reactivity with Compound I of tetramesitylporphyrin (3-CompI) and tetrakis-(2,6-dichlorophenyl)porphyrin (4-CompI) under the same conditions. [3]

Imidazolyl Radical Complex

We herein report a novel biphotochromic molecule composed of two fast negative photochromic phenoxyl-imidazolyl radical complex units showing incident light intensity dependence of the photochemical reaction. [1] The development of the phenoxyl–imidazolyl radical complex (PIC), which generates two nonequivalent radicals upon light irradiation along with the fast photochemical reaction, is crucial for photoresponsive materials. [2] Pentaarylbiimidazole (PABI) and phenoxyl-imidazolyl radical complex (PIC) are one of the fast photochromic molecules based on imidazolyl radicals. [3] Here, we demonstrated the red-light driven photochromism via the triplet fusion of a phenoxyl-imidazolyl radical complex, Pery-RPIC, that has a covalently bonded perylene as an annihilator unit. [4] Among various photoswitch molecules, phenoxyl-imidazolyl radical complex (PIC) is a recently developed thermally-reversible photochromic molecule whose thermal back reaction can be tuned from tens of nanoseconds to tens of seconds by rational designs of the molecular structure. [5] Among various photoswitch molecules, the phenoxyl-imidazolyl radical complex (PIC) is a recently developed thermally reversible photochromic molecule whose thermal back reaction can be tuned from tens of nanoseconds to tens of seconds by rational design of the molecular structure. [6]

Cation Radical Complex

We report the synthesis, characterization, and electron-transfer (ET) oxidation reactivity of a chromium(V)–oxo TAML cation radical complex binding Sc3+ ion, {[CrV(O)(TAML•+)]-Sc3+}3+ (2-Sc). [1] We synthesize oxoiron(IV) porphyrin π-cation radical complexes (1-CompI and 2-CompI) having the n-hexyl side chains. [2] As case studies, we have looked at a recently published iron(V)-imido ligand π-cation radical complex, which is formally an iron(VI)-imido complex [Fe V (NTs)(TAML +· )] ( 1 ; NTs = tosylimido), and an iron(V)-imido complex [Fe V (NTs)(TAML)] - ( 2 ). [3] To reveal the chemical and biological function of native hemes, we compare the reactivity of the oxoiron(IV) porphyrin π-cation radical complex (Compound I) of TMP (TMP-I) with that of TMTMP (TMTMP-I) for epoxidation, hydrogen abstraction, hydroxylation, sulfoxidation, and demethylation reactions. [4] Oxoiron(IV) porphyrin π-cation radical complexes (Compound I) of 1 (1-CompI) and 2 (2-CompI) are soluble in most organic solvents, allowing direct comparison of their electronic structure and reactivity with Compound I of tetramesitylporphyrin (3-CompI) and tetrakis-(2,6-dichlorophenyl)porphyrin (4-CompI) under the same conditions. [5] The effects of peripheral fluorine atoms on epoxidation reactions of ethylene by oxoiron(IV) porphyrin cation radical complex in the quartet and sextet spin multiplicities are systematically investigated using the DFT method. [6]

Phenoxyl Radical Complex

The formation of the NiII-phenoxyl radical complex by O2 was observed in the reaction of this complex in the solid state. [1] Phenoxyl radical complexes were generated in solution via chemical oxidation using ceric ammonium nitrate (CAN) and the redox properties were examined through cyclic voltammetric measurements. [2] From these results, the Cu(II)-phenoxyl radical complex 2 is concluded to be formed by the reaction of 1 with O₂ via the Cu(I)-phenoxyl radical species. [3]

Nitrene Radical Complex

The key carbene, mono- and bis-nitrene radical complexes coordinated to [Co(TPP)] (TPP = tetraphenylporphyrin) have previously been investigat-ed with a variety of experimental techniques and supporting (single-reference) DFT calculations that indicated doublet (S = ½) ground states for all three species. [1] Reaction of the cobalt(III)-TAML complexes with PhINNs as a nitrene precursor leads to TAML-centered oxidation and produces nitrene radical complexes without oxidation of the metal ion. [2]