Results 81 to 90 of about 2,724,653 (291)

Electrochemical oxidations of thioethers: Modulation of oxidation potential using a hydrogen bonding network

open access: yesElectrochemistry Communications, 2019
A highly efficient chemo-selective electrochemical oxidation of thioethers to sulfoxides and sulfones was developed. The hydrogen bonding network generated from hexafluoro-2-propanol (HFIP) and acetic acid (AcOH) plays an important role in the modulation
Shiwen Liu   +6 more
doaj  

First-principles calculations of the crystal structure, electronic structure, and thermodynamic stability of Be(BH4)2 [PDF]

open access: yes, 2008
Alanates and boranates are intensively studied because of their potential use as hydrogen storage materials. In this paper, we present a first-principles study of the electronic structure and the energetics of beryllium boranate BeBH42. From total energy
Brocks, Geert   +2 more
core   +2 more sources

Benzylammonium 2,4-bis(dicyanomethylene)-2,3-dihydroisoindolide [PDF]

open access: yes, 2005
The cation and anion of the title salt, C⁷H₁₀N⁺.C₁₄H₄N₅-, are both bisected by a crystallographic mirror plane.
Conway, Shane P.   +3 more
core   +1 more source

Dissimilar diffusion bonding behavior of hydrogenated Ti2AlNb-based and Ti-6Al-4V alloys

open access: yesMaterials & Design, 2018
The effects of hydrogen concentration, heating rate and bonding temperature on dissimilar diffusion bonding of Ti2AlNb-based and Ti-6Al-4V alloys were investigated.
Fuhui Zhu   +3 more
doaj  

N-(Phenylsulfonyl)-l-asparagine

open access: yesActa Crystallographica Section E, 2009
In the title compound, C10H12N2O5S, one of the sulfonyl O atoms is hydrogen bonded to the amido N atom of an adjacent molecule. There is also a weak hydrogen-bonding interaction between the other sulfonyl O atom and the secondary amino N atom.
Muhammad Shafiq   +4 more
doaj   +1 more source

Hydrogen bonding characterization in water and small molecules

open access: yes, 2017
The prototypical Hydrogen bond in water dimer and Hydrogen bonds in the protonated water dimer, in other small molecules, in water cyclic clusters, and in ice, covering a wide range of bond strengths, are theoretically investigated by first-principles ...
Silvestrelli, Pier Luigi
core   +1 more source

Adhesion and Surface Interactions of a Self‐Healing Polymer with Multiple Hydrogen‐Bonding Groups

open access: yes, 2014
The surface properties and self‐adhesion mechanism of self‐healing poly(butyl acrylate) (PBA) copolymers containing comonomers with 2‐ureido‐4[1H]‐pyrimidinone quadruple hydrogen bonding groups (UPy) are investigated using a surface forces apparatus (SFA)
Ali Faghihnejad   +7 more
semanticscholar   +1 more source

How Cellulose Stretches: Synergism between Covalent and Hydrogen Bonding

open access: yesBiomacromolecules, 2014
Cellulose is the most familiar and most abundant strong biopolymer, but the reasons for its outstanding mechanical performance are not well understood.
C. Altaner   +3 more
semanticscholar   +1 more source

Tris(hydroxypropyl)phosphine Oxide: A Chiral Three-Dimensional Material with Nonlinear Optical Properties [PDF]

open access: yes, 2010
The achiral C_(3v) organic phosphine tris(hydroxypropyl)phosphine oxide (1) crystallizes in the unusual chiral hexagonal space group P6_3. The structure is highly ordered because each phosphine oxide moiety forms three hydrogen bonds with adjacent ...
Durrell, Alec C.   +5 more
core   +2 more sources

An NMR method for the quantitative assessment of intramolecular hydrogen bonding; application to physicochemical, environmental, and biochemical properties.

open access: yesJournal of Organic Chemistry, 2014
(1)H NMR chemical shifts have been obtained in the solvents deuterochloroform and dimethyl sulfoxide. The difference in the chemical shifts of an OH or NH group in these two solvents, Δδ = δ(DMSO) - δ(CDCl3), can be converted into the hydrogen bond ...
M. Abraham   +5 more
semanticscholar   +1 more source

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