Publications related to Sigma bond

Supramolecular architectures of molecularly thin yet robust free-standing layers

Henning Paul-Julius Stahlberg, Mina Moradi, Patrick Shahgaldian

Stable, single-nanometer thin, and free-standing two-dimensional layers with controlled molecular architectures are desired for several applications ranging from (opto-)electronic devices to nanoparticle and single-biomolecule characterization. It is, howe ...

American Association for the Advancement of Science (AAAS)2019

Interplay of H-Bonds with Aromatics in Isolated Complexes Identifies Isomeric Carbohydrates

Vladimir Kopysov, Ruslan Yamaletdinov, Aleksandr Pereverzev

The tremendous isomeric diversity of carbohydrates enables a wide range of their biological functions but makes the identification and study of these molecules difficult. We investigated the ability of intermolecular interactions to communicate structural ...

WILEY-V C H VERLAG GMBH2019

Are pi-pi Interactions in Ionic Liquids Related to Conductivities?

Paul Joseph Dyson, Rosario Scopelliti, Zhaofu Fei, Farzaneh Fadaei Tirani, Zhangjun Huang

A series of functionalised imidazolium halide salts with substituents able to form pi-bonds have been prepared and characterised. Subsequent reaction of these imidazolium halides with Ag[C(CN)(3)] affords imidazolium-based ionic liquids (ILs), some of whic ...

WILEY-V C H VERLAG GMBH2018

Equilibrium and Out-of-Equilibrium Adherence of Hydrogels against Polymer Brushes

Jennifer Mary Adrienne Alice Macron, Costantino Creton

At low pH, underwater adherence between poly(N,N-dimethylacrylamide) hydrogels and poly(acrylic acid) brushes is due to the formation of multiple hydrogen bonds. The effect of the key parameters controlling the formation of these interactions (contact time ...

AMER CHEMICAL SOC2018

Catalytic Enantioselective Transformations Involving C-H Bond Cleavage by Transition-Metal Complexes

Nicolai Cramer, Shouguo Wang, Christopher Gordon Newton, Caio Costa Oliveira

The development of new methods for the direct functionalization of unactivated C-H bonds is ushering in a paradigm shift in the field of retrosynthetic analysis. In particular, the catalytic enantioselective functionalization of C-H bonds represents a high ...

2017

Switchable [3+2] and [4+2] Heteroannulation of Primary Propargylamines with Isonitriles to Imidazoles and 1,6-Dihydropyrimidines: Catalyst Loading Enabled Reaction Divergence

Qian Wang, Jieping Zhu, Shuo Tong

Isonitrile 1 due to its carbene-like reactivity serves generally as a one-carbon synthon in a diverse set of organic transformations. We report in this article that the isocyano group can also act as a polarized triple bond to undergo, as a two-atom syntho ...

Wiley-Blackwell2016

Facile CO Cleavage by a Multimetallic CsU2 Nitride Complex

Rosario Scopelliti, Marinella Mazzanti, Marta Falcone

Uranium nitrides are important materials with potential for application as fuels for nuclear power generation, and as highly active catalysts. Molecular nitride compounds could provide important insight into the nature of the uranium–nitride bond, but curr ...

2016

Highly Enantioselective Rhodium(I)-Catalyzed Activation of Enantiotopic Cyclobutanone C-C Bonds

Nicolai Cramer, Laetitia Marie Mélanie Souillart

The selective functionalization of carbon-carbon sigma bonds is a synthetic strategy that offers uncommon retrosynthetic disconnections. Despite progress in CC activation and its great importance, the development of asymmetric reactions lags behind. Rhodiu ...

Wiley-V C H Verlag Gmbh2014

Synthetic Study towards Strictamine: The Oxidative Coupling Approach

Qian Wang, Jieping Zhu, Weiwu Ren, Nicholas David Charles Tappin

A synthetic approach featuring a key intramolecular oxidative coupling of a dianion for the formation of the C7–C16 bond was exploited aiming at the synthesis of strictamine. Treatment of substituted tetrahydrocarboline with LHMDS at –78 °C followed by iod ...

Georg Thieme Verlag Kg2013

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Sigma bond

Supramolecular architectures of molecularly thin yet robust free-standing layers

Interplay of H-Bonds with Aromatics in Isolated Complexes Identifies Isomeric Carbohydrates

Are pi-pi Interactions in Ionic Liquids Related to Conductivities?

Equilibrium and Out-of-Equilibrium Adherence of Hydrogels against Polymer Brushes

Catalytic Enantioselective Transformations Involving C-H Bond Cleavage by Transition-Metal Complexes

Fe N-Heterocyclic Carbene Complexes as Promising Photosensitizers

Switchable [3+2] and [4+2] Heteroannulation of Primary Propargylamines with Isonitriles to Imidazoles and 1,6-Dihydropyrimidines: Catalyst Loading Enabled Reaction Divergence

Facile CO Cleavage by a Multimetallic CsU2 Nitride Complex

Highly Enantioselective Rhodium(I)-Catalyzed Activation of Enantiotopic Cyclobutanone C-C Bonds

Synthetic Study towards Strictamine: The Oxidative Coupling Approach

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Facile CO Cleavage by a Multimetallic CsU2 Nitride Complex

Equilibrium and Out-of-Equilibrium Adherence of Hydrogels against Polymer Brushes

Highly Enantioselective Rhodium(I)-Catalyzed Activation of Enantiotopic Cyclobutanone C-C Bonds

Fe N-Heterocyclic Carbene Complexes as Promising Photosensitizers

Synthetic Study towards Strictamine: The Oxidative Coupling Approach

Supramolecular architectures of molecularly thin yet robust free-standing layers

Are pi-pi Interactions in Ionic Liquids Related to Conductivities?

Interplay of H-Bonds with Aromatics in Isolated Complexes Identifies Isomeric Carbohydrates

Catalytic Enantioselective Transformations Involving C-H Bond Cleavage by Transition-Metal Complexes

Switchable [3+2] and [4+2] Heteroannulation of Primary Propargylamines with Isonitriles to Imidazoles and 1,6-Dihydropyrimidines: Catalyst Loading Enabled Reaction Divergence