Lewis acids and bases ≈ Lewis acids and bases
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Dual Catalysis Strategies in Photochemical Synthesis Open
The interaction between an electronically excited photocatalyst and an organic molecule can result in the genertion of a diverse array of reactive intermediates that can be manipulated in a variety of ways to result in synthetically useful…
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Element Replacement Approach by Reaction with Lewis Acidic Molten Salts to Synthesize Nanolaminated MAX Phases and MXenes Open
Nanolaminated materials are important because of their exceptional properties and wide range of applications. Here, we demonstrate a general approach to synthesizing a series of Zn-based MAX phases and Cl-terminated MXenes originating from…
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NHCs in Main Group Chemistry Open
Since the discovery of the first stable N-heterocyclic carbene (NHC) in the beginning of the 1990s, these divalent carbon species have become a common and available class of compounds, which have found numerous applications in academic and…
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Influence of iron doping on tetravalent nickel content in catalytic oxygen evolving films Open
Significance Iron-doped nickel oxide films are the most active nonnoble metal oxygen evolution reaction (OER) catalysts in alkaline electrolyte. Since Corrigan’s original discovery of enhanced activity with Fe doping in nickel oxides, the …
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π‐Conjugated Lewis Base: Efficient Trap‐Passivation and Charge‐Extraction for Hybrid Perovskite Solar Cells Open
A π-conjugated Lewis base is introduced into perovskite solar cells, namely, indacenodithiophene end-capped with 1.1-dicyanomethylene-3-indanone (IDIC), as a multifunctional interlayer, which combines efficient trap-passivation and electro…
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Highly efficient all-inorganic perovskite solar cells with suppressed non-radiative recombination by a Lewis base Open
All-inorganic perovskite solar cells (PVSCs) have drawn increasing attention because of their outstanding thermal stability. However, their performance is still inferior than the typical organic-inorganic counterparts, especially for the d…
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Rational design of Lewis base molecules for stable and efficient inverted perovskite solar cells Open
Lewis base molecules that bind undercoordinated lead atoms at interfaces and grain boundaries (GBs) are known to enhance the durability of metal halide perovskite solar cells (PSCs). Using density functional theory calculations, we found t…
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Transition-Metal-Catalyzed C–H Bond Activation for the Formation of C–C Bonds in Complex Molecules Open
Site-predictable and chemoselective C-H bond functionalization reactions offer synthetically powerful strategies for the step-economic diversification of both feedstock and fine chemicals. Many transition-metal-catalyzed methods have emerg…
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Enantioselective photochemistry through Lewis acid–catalyzed triplet energy transfer Open
Relatively few catalytic systems are able to control the stereochemistry of electronically excited organic intermediates. Here we report the discovery that a chiral Lewis acid complex can catalyze triplet energy transfer from an electronic…
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Overview of acidic deep eutectic solvents on synthesis, properties and applications Open
This review divides the acidic deep eutectic solvents (ADES) into Brønsted and Lewis DES according to their diversity of acidic character. The hydrogen bond donors and halide salts for formulating an ADES are classified, the synthesis meth…
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Engineering oxygen-containing and amino groups into two-dimensional atomically-thin porous polymeric carbon nitrogen for enhanced photocatalytic hydrogen production Open
Oxygen-containing and amino groups functionalized polymeric carbon nitride atomically-thin porous nanosheets with hydrophilic surfaces and strong Lewis basicity are designed and synthesized for enhanced photocatalytic H2evolution.
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Protodeboronation of Heteroaromatic, Vinyl, and Cyclopropyl Boronic Acids: pH–Rate Profiles, Autocatalysis, and Disproportionation Open
pH-rate profiles for aqueous-organic protodeboronation of 18 boronic acids, many widely viewed as unstable, have been studied by NMR and DFT. Rates were pH-dependent, and varied substantially between the boronic acids, with rate maxima tha…
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Nature of Active Sites and Surface Intermediates during SCR of NO with NH<sub>3</sub> by Supported V<sub>2</sub>O<sub>5</sub>–WO<sub>3</sub>/TiO<sub>2</sub> Catalysts Open
Time-resolved in situ IR was performed during selective catalytic reduction of NO with NH3 on supported V2O5-WO3/TiO2 catalysts to examine the distribution and reactivity of surface ammonia species on Lewis and Brønsted acid sites. While b…
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Suppressing defects through the synergistic effect of a Lewis base and a Lewis acid for highly efficient and stable perovskite solar cells Open
The synergistic combination of a Lewis base and a Lewis acid enables perovskite solar cells with high efficiency and stability.
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The Significance of Lewis Acid Sites for the Selective Catalytic Reduction of Nitric Oxide on Vanadium‐Based Catalysts Open
The long debated reaction mechanisms of the selective catalytic reduction (SCR) of nitric oxide with ammonia (NH 3 ) on vanadium‐based catalysts rely on the involvement of Brønsted or Lewis acid sites. This issue has been clearly elucidate…
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Phosphorus-Based Catalysis Open
Phosphorus-based organocatalysis encompasses several subfields that have undergone rapid growth in recent years. This Outlook gives an overview of its various aspects. In particular, we highlight key advances in three topics: nucleophilic …
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Exploiting hexafluoroisopropanol (HFIP) in Lewis and Brønsted acid-catalyzed reactions Open
Hexafluoroisopropanol (HFIP) is a solvent with unique properties that has recently gained attention for promoting a wide range of challenging chemical reactions.
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An Extensive Set of Accurate Fluoride Ion Affinities for <i>p</i>‐Block Element Lewis Acids and Basic Design Principles for Strong Fluoride Ion Acceptors Open
The computed fluoride ion affinity (FIA) is a valuable descriptor to assess the Lewis acidity of a compound. Despite its widespread use, the varying accuracy of applied computational models hampers the broad comparability of literature dat…
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Direct catalytic hydrogenation of CO2 to formate over a Schiff-base-mediated gold nanocatalyst Open
Catalytic transformation of CO 2 to formate is generally realized through bicarbonate hydrogenation in an alkaline environment, while it suffers from a thermodynamic sink due to the considerable thermodynamic stability of the bicarbonate i…
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Heterolytic Dissociation of H<sub>2</sub> in Heterogeneous Catalysis Open
H2 dissociation plays crucial roles in catalytic hydrogenation reactions and hydrogen storage. Metal-nanoparticle-based heterogeneous catalysts often dissociate H2 via a homolytic pathway. The heterolytic H2 dissociation pathway was identi…
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Chalcogen Bonding Catalysis of a Nitro‐Michael Reaction Open
Chalcogen bonding is the non‐covalent interaction between Lewis acidic chalcogen substituents and Lewis bases. Herein, we present the first application of dicationic tellurium‐based chalcogen bond donors in the nitro‐Michael reaction betwe…
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Engineering a Highly Defective Stable UiO-66 with Tunable Lewis- Brønsted Acidity: The Role of the Hemilabile Linker Open
The stability of metal-organic frameworks (MOFs) typically decreases with an increasing number of defects, limiting the number of defects that can be created and limiting catalytic and other applications. Herein, we use a hemilabile (Hl) l…
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Acid-Promoter-Free Ethylene Methoxycarbonylation over Ru-Clusters/Ceria: The Catalysis of Interfacial Lewis Acid–Base Pair Open
The interface of metal-oxide plays pivotal roles in catalytic reactions, but its catalytic function is still not clear. In this study, we report the high activity of nanostructured Ru/ceria (Ru-clusters/ceria) in the ethylene methoxycarbon…
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Still Unconquered: Enantioselective Passerini and Ugi Multicomponent Reactions Open
The Passerini three-component (P-3CR) and the Ugi four-component (U-4CR) are two of the most prominent isocyanide-based multicomponent reactions (IMCRs). The P-3CR transforms isocyanides, aldehydes (ketones), and carboxylic acids to α-acyl…
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β-Selective Reductive Coupling of Alkenylpyridines with Aldehydes and Imines via Synergistic Lewis Acid/Photoredox Catalysis Open
Umpolung (polarity reversal) strategies of aldehydes and imines have dramatically expanded the scope of carbonyl and iminyl chemistry by facilitating reactions with non-nucleophilic reagents. Herein, we report the first visible light photo…
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Tris(pentafluorophenyl)borane and Beyond: Modern Advances in Borylation Chemistry Open
As main-group chemistry, in particular boron chemistry, has expanded and developed over the past 20 years, one reagent has risen to prominence as well. Tris(pentafluorophenyl)borane, B(C6F5)3 (commonly known as BCF), has demonstrated exten…
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Carbon–Halogen Bond Activation by Selenium‐Based Chalcogen Bonding Open
Chalcogen bonding is a little explored noncovalent interaction similar to halogen bonding. This manuscript describes the first application of selenium‐based chalcogen bond donors as Lewis acids in organic synthesis. To this end, the solvol…
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Use of deep eutectic solvents as catalyst: A mini-review Open
Deep eutectic solvents (DESs) exhibit numerous advantages over conventional ones used in several chemical and biochemical processes. Besides addressing most of the principles of green chemistry, DESs can also act as catalyst depending on t…
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Bismuth Redox Catalysis: An Emerging Main-Group Platform for Organic Synthesis Open
Bismuth has recently been shown to be able to maneuver between different oxidation states, enabling access to unique redox cycles that can be harnessed in the context of organic synthesis. Indeed, various catalytic Bi redox platforms have …
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Selective Hydrogen Atom Abstraction through Induced Bond Polarization: Direct α‐Arylation of Alcohols through Photoredox, HAT, and Nickel Catalysis Open
The combination of nickel metallaphotoredox catalysis, hydrogen atom transfer catalysis, and a Lewis acid activation mode, has led to the development of an arylation method for the selective functionalization of alcohol α‐hydroxy C−H bonds…