Molecular catalysts design: Intramolecular supporting site assisting to metal center for efficient CO2 photo- and electroreduction

Wu, Xia; Wang, Rui

doi:10.1016/j.mcat.2022.112884

Cited by 6 publications

(2 citation statements)

References 113 publications

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“…Indeed, many Co complexes based on poly-aromatic aza ligands were reported to display good to excellent activity in reductive catalytic processes. [8][9][10][11][12][13][14][15] With TMPA ligands specifically, Co II complexes were described as active for electro-and photocatalytic reduction of small molecules such as CO 2 [16][17][18][19] and O 2 [20] along with H 2 evolution. [21][22][23][24][25][26] Most of the reported Co II complexes coordinated to a TMPA unit, devoid of cavitary control, are mono-cationic species due to their propensity to bind anions: some are 5-coordinate with an anion (such as I À , Cl À , Br À , TfO À , SCN À or carboxylates) bound at the apical site of the trigonal pyramid or 6-coordinate with anionic donors.…”

Section: Introductionmentioning

confidence: 99%

“…Wanting to explore reductive redox processes involving proton‐coupled multiple electron transfer, we decided to investigate the coordination of Co II to these calixarene ligands. Indeed, many Co complexes based on poly‐aromatic aza ligands were reported to display good to excellent activity in reductive catalytic processes [8–15] . With TMPA ligands specifically, Co II complexes were described as active for electro‐ and photo‐catalytic reduction of small molecules such as CO 2 [16–19] and O 2 [20] along with H 2 evolution [21–26] …”

Section: Introductionmentioning

confidence: 99%

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TMPA‐based Cavitary Cobalt (II) Funnel Complexes

Nyssen,

Abudayyeh,

Zhurkin

et al. 2024

Eur J Inorg Chem

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The synthesis of a series of mononuclear, dicationic CoII funnel complexes is reported herein. Three ligands Calix‐TMPAX present a calix[6]arene cone closed at its small rim by a tris(2‐pyridylmethyl)amine (TMPA) unit and differ by the nature of three cavity walls, anisole, phenol or quinone. The X‐ray diffraction structure of [CoII(MeCN)Calix‐TMPAOMe](ClO4)2 displays a trigonal bipyramidal geometry, with Co bound to all 4 nitrogen atoms of the TMPA cap, and to one MeCN guest molecule buried inside the calixarene cavity. All complexes were fully characterized in solution as high spin 5‐coordinate species using various techniques, including 1H NMR spectroscopy. For comparison purpose, an analogous CoII complex based on the TMPACH2OH ligand, devoid of a calixarene core, was synthetized. Its X‐ray structure shows a dicationic 7‐coordinate cobalt(II) center in the N4O3 environment provided by the ligand, leaving no space for exogenous ligand binding. This contrasts with the 5‐coordinate complexes obtained with the calix‐ligands that allow guest‐ligand binding and exchange. A brief overview of the coordination properties of the calix‐complexes, compared to those obtained with TMPA ligands, devoid of a cavity, highlights major differences in terms of complexation kinetics, geometry, coordination to the labile site, anion affinity, nuclearity, and stability.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

TMPA‐based Cavitary Cobalt (II) Funnel Complexes

Nyssen,

Abudayyeh,

Zhurkin

et al. 2024

Eur J Inorg Chem

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Organic and Non‐Precious Metal Photosensitizers for Photocatalytic CO₂ Reduction

Xue,

Chao

2024

ChemPhotoChem

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Carbon dioxide (CO2) is the primary greenhouse gas responsible for global warming, posing a significant challenge to the global environment. To reduce CO2 emission and support the sustainable development, efficient conversion of CO2 into chemical feedstocks has gained a lot of attention. One promising strategy inspired by natural photosynthesis is solar‐driven CO2 reduction, which uses appropriate photocatalytic systems to generate CO, HCOOH, CH4, CH3OH, etc. However, developing low‐cost, environmentally friendly, and non‐toxic materials for the catalytic conversion of CO2 remains a significant challenge. Light‐absorbing photosensitizers play an important role in photocatalytic systems. Recently, non‐precious metal photosensitizers such as organic compounds and earth‐abundant metal complexes have been intensively studied for developing low‐cost photocatalytic systems. This review focuses on recent reports on organic and non‐precious metal photosensitizers for photocatalytic CO2 reduction.

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Progress in design and preparation of multi-atom catalysts for photocatalytic CO2 reduction

Wang,

Zou,

Park

et al. 2024

Sci. China Mater.

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Molecular catalysts design: Intramolecular supporting site assisting to metal center for efficient CO2 photo- and electroreduction

Cited by 6 publications

References 113 publications

TMPA‐based Cavitary Cobalt (II) Funnel Complexes

TMPA‐based Cavitary Cobalt (II) Funnel Complexes

Organic and Non‐Precious Metal Photosensitizers for Photocatalytic CO₂ Reduction

Progress in design and preparation of multi-atom catalysts for photocatalytic CO2 reduction

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Molecular catalysts design: Intramolecular supporting site assisting to metal center for efficient CO2 photo- and electroreduction

Cited by 6 publications

References 113 publications

TMPA‐based Cavitary Cobalt (II) Funnel Complexes

TMPA‐based Cavitary Cobalt (II) Funnel Complexes

Organic and Non‐Precious Metal Photosensitizers for Photocatalytic CO2 Reduction

Progress in design and preparation of multi-atom catalysts for photocatalytic CO2 reduction

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Product

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Organic and Non‐Precious Metal Photosensitizers for Photocatalytic CO₂ Reduction