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Hydrogen proton

Nucleophilic attack on ring hydrogen (proton abstraction) (Section 5.05.3.5)... [Pg.100]

Nucleophilic Attack on Ring Hydrogen (Proton Abstraction)... [Pg.113]

Moreover, a specially active hydrogen species present in a reaction mixture (e.g. atomic hydrogen, protons) (83) or forming during the surface reaction (37) can penetrate into a metal catalyst lattice and become... [Pg.286]

To shuttle between the catalytic site located at the centre of the molecule and the surface, the components of the reaction, i.e. molecular hydrogen, protons and electrons, have to cover a distance of about 3 nm. To do so, they most probably use specific routes. [Pg.122]

It is important to appreciate the role of the solvent in this transformation, removing and supplying protons, and to understand that tautomerism is not merely transfer of a proton from the a-carbon to the carbonyl oxygen. The rate-determining step in tautomerism will be removal of the a-hydrogen protonation of... [Pg.349]

There are also some C-H. ..tt intermoleeular interaetions. Such interactions use the n cloud of the aromatic rings as acceptors for the hydrogen protons. [Pg.111]

H-NMR hexaazaisowurtzitane(CL-20) Hydrogen(proton) nuclear magnetic resonance... [Pg.492]

Industrially, chlnrinaiions are carried out in five ways 11) radical substitution of hydrogens (protons) 2) addition across unsaluruted (double or triple) bonds, using molecular Cl. HCI, or HOCI (3) HCI reaction with an alcohol 14) chlorinolysis. in which the oxidative power of Cl is... [Pg.366]

PROTON-PROTON REACTION. A thermonuclear reaction in which two protons collide at very high velocities and combine to form a deuteron. The resultant deuteron may capture another proton to form tritium and the latter may undergo proton capture to form helium. The proton-proton reaction is now believed to be the principal source of energy within the sun and other stars of its dass. A temperature of the order of five million degrees Kelvin and high hydrogen (proton) concentrations are required for this reaction to proceed at rates compatible with energy emission by such stius. [Pg.1378]

The main synthetic methods used in the preparation of the coordination compounds mentioned above are reactions of coordinatively unsaturated complexes with hydrogen, protonation of hydride complexes, and formation of complexes containing molecular hydrogen by a synthesis reaction under reducing conditions. [Pg.26]

An interesting variant of a geometric isomerization was observed for the 7,7-dimethylbicyclo[4.1.0]hept-2-ene system. The electron transfer reaction of the highly strained rrans-fused isomer (30) with 1-cyanonaphthalene rapidly converted it to the cw-fused system (31) [224], The observed rearrangement requires inversion at one of the tertiary cyclopropane carbons. This can be accomplished either by removal of a hydrogen (proton) or by cleavage of a cyclopropane or an allylic bond. [Pg.177]


See other pages where Hydrogen proton is mentioned: [Pg.237]    [Pg.166]    [Pg.288]    [Pg.69]    [Pg.165]    [Pg.306]    [Pg.385]    [Pg.163]    [Pg.458]    [Pg.118]    [Pg.2]    [Pg.131]    [Pg.166]    [Pg.403]    [Pg.430]    [Pg.66]    [Pg.237]    [Pg.131]    [Pg.166]    [Pg.403]    [Pg.430]    [Pg.66]    [Pg.428]    [Pg.204]    [Pg.1]    [Pg.231]    [Pg.41]    [Pg.84]    [Pg.692]    [Pg.69]    [Pg.182]    [Pg.185]   
See also in sourсe #XX -- [ Pg.2 ]

See also in sourсe #XX -- [ Pg.2 ]




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1,2-Addition proton-type hydrogen transfer

Acidic and Exchangeable Protons Hydrogen Bonding

Alkyl hydrogen carbonates, protonated

Coherent Proton Tunneling in Hydrogen Bonds of Isolated Molecules Malonaldehyde and Tropolone

Coupled protons, hydrogen bonds, tunneling

Electrolysis, hydrogen from Proton Energy Systems

General Classification of Negatively Polarized Hydrogen Atoms as Proton-Accepting Sites Basicity Factors

Hard hydrogen-bonded protons

Hydrated proton hydrogen bonding

Hydrogen Bonding, Tautomerism and Proton Exchange

Hydrogen Bonds and Proton Abstraction Reactions

Hydrogen Evaluation Involving Ligands as Proton Donors

Hydrogen abstraction, ketones proton transfer

Hydrogen and proton transfer

Hydrogen bond, free proton

Hydrogen bond, independent proton

Hydrogen bond, independent proton model

Hydrogen bond, isotropic proton

Hydrogen bonded proton clusters

Hydrogen bonding proton acidity

Hydrogen bonding proton sponges

Hydrogen bonding proton transfer and

Hydrogen bonding, protons

Hydrogen bonds proton donors

Hydrogen bonds proton ejection

Hydrogen bonds proton ordering

Hydrogen bonds proton ordering model

Hydrogen bonds proton path active site

Hydrogen bonds proton polaron

Hydrogen bonds proton transfer process

Hydrogen bonds proton-phonon coupling

Hydrogen bonds tunneling transition, coupled protons

Hydrogen bonds, charge-assisted proton transfer

Hydrogen bonds, proton sponges

Hydrogen bridges proton sponge cations

Hydrogen catalytic proton transfer reactions

Hydrogen chiral proton” catalysts

Hydrogen cyanide, protonated

Hydrogen fluoride, proton-donor

Hydrogen ions Proton

Hydrogen peroxide, protonated

Hydrogen peroxide, protonated oxygenation

Hydrogen proton deficient

Hydrogen proton exchange

Hydrogen proton exchange Electrode Assemblies

Hydrogen proton exchange Specialized Membrane

Hydrogen proton exchange barriers

Hydrogen proton exchange membrane fuel cell

Hydrogen proton exchange membranes

Hydrogen proton exchange transportation

Hydrogen protonic model

Hydrogen protonic state

Hydrogen spectroscopy Protons

Hydrogen sulfide protonated

Hydrogen sulfide protonation

Hydrogen-bonded amide protons

Hydrogen-bonded imide protons

Hydrogen-bonded protons

Hydrogen-bonded systems proton tunneling

Hydrogenation protonation

Hydrogenation protonation

Intramolecular hydrogen bonds proton sponges

Naphthalene hydrogen bonding Proton

Nucleophilic Attack on Hydrogen Proton Abstraction)

Nucleophilic Attack on Ring Hydrogen (Proton Abstraction)

PKa values of hydrogen-bonded protons

Peculiarities of N-Vinylpyrroles Protonation with Hydrogen Halides

Phenolic hydrogen-bonded protons

Proton Affinity of Hydridic Hydrogens

Proton Dynamics in Hydrogen-bonded Crystals

Proton Transfer in Systems with the Intramolecular Hydrogen Bonding

Proton Transfer to a Hydridic Hydrogen in the Solid State

Proton Transfers in Hydrogen-Bonded Systems

Proton bifurcation, hydrogen bonds

Proton conductivity hydrogen bonds

Proton donors, hydrogen-bonded complexes

Proton exchange membrane direct hydrogen

Proton exchange membrane fuel cell hydrogen crossover

Proton exchange membrane fuel cell hydrogen economy

Proton nuclear magnetic resonance hydrogen bonding

Proton ordering, hydrogen bonds quantum mechanics

Proton ordering, hydrogen bonds systems

Proton removal from intramolecular hydrogen bonds

Proton transfer (cyanide+hydrogen

Proton transfer along hydrogen bonds

Proton transfer, hydrogen bonding

Proton transfer, hydrogen bonds

Proton transfer, hydrogen bonds aqueous systems

Proton transfer, hydrogen bonds bacteriorhodopsin

Proton transfer, hydrogen bonds bond vibrations

Proton transfer, hydrogen bonds cluster formation

Proton transfer, hydrogen bonds dynamics

Proton transfer, hydrogen bonds experimental results

Proton transfer, hydrogen bonds mechanisms

Proton transfer, hydrogen bonds molecular associates

Proton transfer, hydrogen bonds molecular clustering

Proton transfer, hydrogen bonds quantum mechanics

Proton transfer, hydrogen bonds switching

Proton transfer, hydrogen bonds thermodynamics

Proton transfer, hydrogen bonds tunneling

Proton-Deficient Hydrogen Bonds

Proton-conducting ceramic membrane hydrogen production

Proton-exchange membrane fuel cells hydrogen storage

Protonation and Hydrogen Exchange

Reactions excited-state intramolecular hydrogen/proton

Reactions hydrogen/proton transfer

Schiff base protonation, hydrogen bonds

Solid-State Tautomerism, Proton Transfer, and Hydrogen Bonding

Symmetrical hydrogen bridges, proton

Tautomerism, Proton Transfer, and Resonance-Assisted Hydrogen Bonding

The hydrogen ion (proton)

Third Example Proton Transfer and Hydrogen Abstraction Reactions

Tunneling mechanisms, hydrogen bonds proton transfer

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