Heterolytic SS Bond Cleavage by a Purely Carbogenic Frustrated Lewis Pair

2010 ◽  
Vol 49 (45) ◽  
pp. 8389-8391 ◽  
Author(s):  
Blanca Inés ◽  
Sigrid Holle ◽  
Richard Goddard ◽  
Manuel Alcarazo
Keyword(s):  
Bond Cleavage ◽  
Frustrated Lewis Pair

scholarly journals H2 activation by hydrogenase-inspired NiFe catalyst using frustrated Lewis pair: effect of buffer and halide ion in the heterolytic H–H bond cleavage

RSC Advances ◽  
2021 ◽  
Vol 11 (45) ◽  
pp. 28420-28432
Author(s):  
Miho Isegawa ◽  
Takahiro Matsumoto ◽  
Seiji Ogo
Keyword(s):  
Fossil Fuels ◽  
Bond Cleavage ◽  
Clean Fuel ◽  
Frustrated Lewis Pair

Hydrogen is a clean fuel alternative to fossil fuels, and it is vital to develop catalysts for its efficient activation and production.

Carbon Monoxide Bond Cleavage Mediated by an Intramolecular Frustrated Lewis Pair: Access to New B/N Heterocycles via Selective Incorporation of Single Carbon Atoms

2021 ◽  
Author(s):  
Clemens Krempner ◽  
Chamila Manankandayalage ◽  
Daniel K Unruh
Keyword(s):  
Carbon Monoxide ◽  
Bond Cleavage ◽  
Frustrated Lewis Pair ◽  
Selective Incorporation

Utilizing an intramolecular frustrated Lewis pair (FLP) decorated with a strongly donating guanidino moiety enabled the formation of a thermally remarkably stable FLP-CO adduct, which at 120°C underwent CO migration...

scholarly journals Trioxatriangulenium (TOTA+) as a robust carbon-based Lewis acid in frustrated Lewis pair chemistry

2021 ◽  
Author(s):  
Aslam C. Shaikh ◽  
José M. Veleta ◽  
Jules Moutet ◽  
Thomas L. Gianetti
Keyword(s):  
Lewis Acid ◽  
Bond Cleavage ◽  
Stable Carbon ◽  
Lewis Bases ◽  
Frustrated Lewis Pair ◽  
Carbon Based

Frustration at carbon! Herein, we present a frustrated Lewis pair system derived from a water stable carbon-based Lewis acid, trioxatriangulene (TOTA+), and a variety of Lewis bases, which successfully promotes bond cleavage and molecule fixation.

Heterolytic SS Bond Cleavage by a Purely Carbogenic Frustrated Lewis Pair

2010 ◽  
Vol 122 (45) ◽  
pp. 8567-8569 ◽  
Author(s):  
Blanca Inés ◽  
Sigrid Holle ◽  
Richard Goddard ◽  
Manuel Alcarazo
Keyword(s):  
Bond Cleavage ◽  
Frustrated Lewis Pair

Hydrogen cleavage by solid-phase frustrated Lewis pairs

2016 ◽  
Vol 52 (69) ◽  
pp. 10478-10481 ◽  
Author(s):  
Jun-Yi Xing ◽  
Jean-Charles Buffet ◽  
Nicholas H. Rees ◽  
Peter Nørby ◽  
Dermot O'Hare
Keyword(s):  
Solid Phase ◽  
Bond Cleavage ◽  
Direct Synthesis ◽  
Frustrated Lewis Pairs ◽  
Mild Conditions ◽  
Frustrated Lewis Pair ◽  
Lewis Pairs

We report the direct synthesis of a solid-phase frustrated Lewis pair (s-FLP), reaction with H2 under mild conditions led to heterolytic H–H bond cleavage and the formation of [SiOB(H)(C6F5)2][tBu3PH].

Metal-Metal Cooperative Bond Activation by Heterobimetallic Alkyl, Aryl, and Acetylide PtII/CuI Complexes

2020 ◽  
Author(s):  
Shubham Deolka ◽  
Orestes Rivada Wheelaghan ◽  
Sandra Aristizábal ◽  
Robert Fayzullin ◽  
Shrinwantu Pal ◽  
...  
Keyword(s):  
Alkyl Group ◽  
Bond Activation ◽  
Bond Cleavage ◽  
Terminal Alkyne ◽  
Alkyl Aryl ◽  
Metal Metal ◽  
The Stability ◽  
Selective Formation ◽  
Organoplatinum Compounds

We report selective formation of heterobimetallic PtII/CuI complexes that demonstrate how facile bond activation processes can be achieved by altering reactivity of common organoplatinum compounds through their interaction with another metal center. The interaction of the Cu center with Pt center and with a Pt-bound alkyl group increases the stability of PtMe2 towards undesired rollover cyclometalation. The presence of the CuI center also enables facile transmetalation from electron-deficient tetraarylborate [B(ArF)4]- anion and mild C-H bond cleavage of a terminal alkyne, which was not observed in the absence of an electrophilic Cu center. The DFT study indicates that the role of Cu center acts as a binding site for alkyne substrate, while activating its terminal C-H bond.

Room Temperature Alkali Metal Reduction of Carbon Dioxide

2020 ◽  
Author(s):  
Lucas A. Freeman ◽  
Akachukwu D. Obi ◽  
Haleigh R. Machost ◽  
Andrew Molino ◽  
Asa W. Nichols ◽  
...  
Keyword(s):  
Alkali Metal ◽  
Alkali Metals ◽  
Room Temperature ◽  
Chemical Reduction ◽  
Bond Cleavage ◽  
Open Shell ◽  
Metal Reduction ◽  
One Pot ◽  
Earth Abundant ◽  
Electron Reduction

The reduction of the relatively inert carbon–oxygen bonds of CO<sub>2</sub> to access useful CO<sub>2</sub>-derived organic products is one of the most important fundamental challenges in synthetic chemistry. Facilitating this bond-cleavage using earth-abundant, non-toxic main group elements (MGEs) is especially arduous because of the difficulty in achieving strong inner-sphere interactions between CO<sub>2</sub> and the MGE. Herein we report the first successful chemical reduction of CO<sub>2</sub> at room temperature by alkali metals, promoted by a cyclic(alkyl)(amino) carbene (CAAC). One-electron reduction of CAAC-CO<sub>2</sub> adduct (<b>1</b>) with lithium, sodium or potassium metal yields stable monoanionic radicals clusters [M(CAAC–CO<sub>2</sub>)]<sub>n</sub>(M = Li, Na, K, <b> 2</b>-<b>4</b>) and two-electron alkali metal reduction affords open-shell, dianionic clusters of the general formula [M<sub>2</sub>(CAAC–CO<sub>2</sub>)]<sub>n </sub>(<b>5</b>-<b>8</b>). It is notable that these crystalline clusters of reduced CO<sub>2</sub> may also be isolated via the “one-pot” reaction of free CO<sub>2</sub> with free CAAC followed by the addition of alkali metals – a reductive process which does not occur in the absence of carbene. Each of the products <b>2</b>-<b>8</b> were investigated using a combination of experimental and theoretical methods.<br>

Oxygen-Oxygen Bond Cleavage and Formation in Co(II) Mediated Stoichiometric O2 Reduction via the Potential Intermediacy of a Co(IV) Oxyl Radical

2018 ◽  
Author(s):  
Lucie Nurdin ◽  
Denis M. Spasyuk ◽  
Laura Fairburn ◽  
Warren Piers ◽  
Laurent Maron
Keyword(s):  
Bond Cleavage ◽  
Peroxo Complex ◽  
Oxygen Oxygen ◽  
O2 Reduction ◽  
Oxygen Bond ◽  
Pentadentate Ligand

Diprotonation of a remarkably stable, toluene soluble cobalt peroxo complex supported by a neutral, dianionic pentadentate ligand leads to facile O-O bond cleavage and production of a highly reactive Co(IV) oxyl cation intermediate that dimerizes and releases O<sub>2</sub>. These processes are relevant to both O<sub>2</sub> reduction and O<sub>2</sub> evolution and the mechanism was probed in detail both experimentally and computationally.

Electron Donation by Low-Crystalline Ba-La-Ce Oxygen-Deficient Composite Oxide Accumulating on Ru Nanoparticles for Ammonia Synthesis under Mild Conditions

2019 ◽  
Author(s):  
Katsutoshi Sato ◽  
Shin-ichiro Miyahara ◽  
Yuta Ogura ◽  
Kotoko Tsujimaru ◽  
Yuichiro Wada ◽  
...  
Keyword(s):  
Ammonia Synthesis ◽  
Bond Cleavage ◽  
Synthesis Process ◽  
Strong Electron ◽  
Mild Conditions ◽  
Ru Nanoparticles ◽  
Rate Determining Step ◽  
Highly Active ◽  
Composite Oxides ◽  
Low Crystalline

<p>To mitigate global problems related to energy and global warming, it is helpful to develop an ammonia synthesis process using catalysts that are highly active under mild conditions. Here we show that the ammonia synthesis activity of Ru/Ba/LaCeO<i><sub>x</sub></i> pre-reduced at 700 °C is the highest reported among oxide-supported Ru catalysts. Our results indicate that low crystalline oxygen-deficient composite oxides, which include Ba<sup>2+</sup>, Ce<sup>3+</sup> and La<sup>3+</sup>, with strong electron-donating ability, accumulate on Ru particles and thus promote N≡N bond cleavage, which is the rate determining step for ammonia synthesis.</p>

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