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Thursday, August 13, 2020 | History

4 edition of Proton transfer in hydrogen-bonded systems found in the catalog.

Proton transfer in hydrogen-bonded systems

Proton transfer in hydrogen-bonded systems

  • 272 Want to read
  • 30 Currently reading

Published by Plenum Press in New York .
Written in English

    Subjects:
  • Proton transfer reactions -- Congresses,
  • Hydrogen bonding -- Congresses

  • Edition Notes

    Statementedited by T. Bountis.
    SeriesNATO ASI series. Series B, Physics ;, vol. 291, NATO ASI series., v. 291.
    ContributionsBountis, Tassos., North Atlantic Treaty Organization. Scientific Affairs Division.
    Classifications
    LC ClassificationsQD501 .P8279 1992
    The Physical Object
    Paginationxiv, 365 p. :
    Number of Pages365
    ID Numbers
    Open LibraryOL1712469M
    ISBN 100306442167
    LC Control Number92014543

    A responsible approach to the development of alternative energy sources, storage and conversion systems is to utilize abundant materials, with minimal or no negative environmental impacts. Here we report that lepidocrocite (γ-FeOOH, a naturally occurring . (C5) Estimates of charge transfer in hydrogen bonds show that the interaction energy correlates well with the extent of charge transfer between the donor and the acceptor. (C6) Analysis of the electron density topology of hydrogen bonded systems usually.

      Moreover, in PCET reactions the radical intermediates are generated as hydrogen-bonded adducts with the conjugate acid or base of the catalytic proton donor/acceptor. We have found that these non-covalent associations can be strongly stabilizing, providing a basis for asymmetric induction in subsequent bond forming events when chiral proton. Ultrafast Hydrogen Bonding Dynamics and Proton Transfer Processes in the Condensed Phase (Understanding Chemical Reactivity) (1st Edition) by Editor-Thomas Elsaesser, Editor-H.J. Bakker, Huib J. Bakker, Thomas Elsässer (Editor) Hardcover, Pages, Published ISBN / ISBN / Book Edition: 1st Edition.

    An extremely strong H/D isotope effect observed in hydrogen bonded A-H B systems is connected with a reach diversity of the potential shape for the proton/deuteron motion. It is connected with the anharmonicity of the proton/deuteron vibrations and of the tunneling effect, particularly in cases of short bridges with low barrier for protonic and deuteronic by:   Due to molecular structure, proton transfer can be intermolecular as well as intramolecular. Excited-state intramolecular proton transfer (ESIPT) reactions in hydrogen-bonded systems have been studied experimentally and theoretically [14–17].Author: Se Wang, Zhuang Wang, Ce Hao.


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Proton transfer in hydrogen-bonded systems Download PDF EPUB FB2

The Concept of Soliton-Carrier Collective Variable for Proton Transfer in Extended Hydrogen-Bonded Systems: Overview Eugene S. Kryachko, Vladimir P. Sokhan Pages Charge transport through the transfer of protons between molecules has long been recognized as a fundamental process, which plays an important role in many chemical reactions.

In particular, proton transfer through Hydrogen (H-) bonds has been identified as the main mechanism, via which many bio­. Proton transfer obeys, in principle, the same physical laws as electron transfer. However, a proton, unlike an electron, cannot tunnel over a large distance because of its larger mass.

Therefore, the transfer of proton over larger distances is accomplished via hydrogen-bonded networks. Proton Transfer in Hydrogen-Bonded Systems (NATO Science Series B: Physics) 1st Edition by T. Bountis (Editor) ISBN ISBN Why is ISBN important.

ISBN. This bar-code number lets you verify that you're getting exactly the right version or edition of a book. Format: Hardcover. Proton Transfer in Hydrogen-Bonded Systems (Nato Science Series B:) Softcover reprint of the original 1st ed.

Edition by T. Bountis (Editor) ISBN ISBN Proton transfer in hydrogen-bonded systems book is ISBN important. ISBN. This bar-code number lets you verify that you're getting exactly the right version or edition of a book. Format: Paperback. Proton transfer in hydrogen-bonded systems.

New York: Plenum Press, © (OCoLC) Material Type: Conference publication, Internet resource: Document Type: Book, Internet Resource: All Authors / Contributors: Tassos Bountis; North Atlantic Treaty Organization.

Scientific Affairs Division. COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus.

Pnevmatikos, Savin A.V., Zolotaryuk A.V. () Soliton Modelling for the Proton Transfer in Hydrogen-Bonded Systems. In: Bountis T. (eds) Proton Transfer in Hydrogen-Bonded Systems. NATO ASI Series (Series B: Physics), vol Cited by: 2. Finally, the book examines experimental and theoretical studies on the nature and control of excited-state hydrogen transfer in various systems.

Hydrogen Bonding and Transfer in the Excited State is an essential overview of this increasingly important field of study, surveying the entire field over 2 volumes, 40 chapters and pages. The transfer of the central proton between the two NH3 units of (H3NHNH3)+ is studied using the 4–31 G basis set within the ab-initio Hartree-Fock formalism.

Electron density difference maps are constructed which clearly indicate electronic redistributions which accompany the half-transfer of the proton from its equilibrium position (NHN) to the midpoint of the hydrogen bond (NHN).Cited by: 3.

Request PDF | Unprecedented high fluorescence anisotropy in protic solvents: Hydrogen bond induced solvent caging. | Atypical high fluorescence anisotropy has been revealed in protic solvents for. Renowned experts from a number of disciplines provide a thorough overview on all aspects of hydrogen transfer in natural and artificial systems, thus aiding readers in their own research.

Numerous tables and illustrations facilitate fast and easy access to the desired information, making this an indispensable source of knowledge for every. The “hydrogen bonding” chemical shift of the —OH proton of methyl alcohol has been separated into two parts, one due to the formation of dimer and the other to all other polymeric species.

A molecule which is hydrogen bonded as dimer contributes only about one-third as much as a molecule in a higher polymer. Ab initio molecular orbital methods are used to calculate potential energy surfaces for proton transfers between water molecules in the linear hydrogen-bonded systems H+(H20)n, n = 2, 3, 4, and 5.

The split valence-shell G basis set used is shown to provide results in excellent agreement with more sophisticated treatments which include correlation energy by: Proton transfer reaction has been of great interest since it is considered as one of the fundamental chemical reactions in many chemical and biological systems.

Ultrafast proton transfer reactions either intra- or intermolecular occurring in the excited states have been extensively studied by many time-resolved electronic and vibrational Author: Myungsam Jen, Kooknam Jeon, Sebok Lee, Sunjoo Hwang, Won-jin Chung, Yoonsoo Pang.

Excited State Proton Transfer via Hydrogen Bonded Dimers and Complexes in Condensed Phase (Cheng-Chih Hsieh, Chang-Ming Jiang and Pi-Tai Chou).

Introduction. Biprotonic transfer within doubly H-bonded homo and heterodimers. Proton transfer through host/guest types of hydrogen bonded : Hardcover.

On average, the hydrogen-bonded, mixed-valent states are stabilized by – () kcal mol–1 relative to the isovalent, neutral, hydrogen-bonded dimers and – () kcal mol–1.

Proceedings of a NATO ARW held in Crete, Greece, MayCharge transport through the transfer of protons between molecules has long been recognized as a fundamental process, which plays an important role in many chemical reactions.

In particular, proton transfer through Hydrogen (H-) bonds has been identified as the main mechanism, via which many bio logical functions are. In this work the role of higher molecular aggregation in the proton transfer processes within hydrogen bond (H-bond) is investigated.

The H-bonded complex consisting of 4-cyanopyridine (CyPy) with trichloroacetic acid (TCA) has been studied in the solutions of acetonitrile, carbon tetrachloride, chloroform and dichloroethane as solvent by FTIR spectroscopy and quantum chemical DFT.

Isotope Effects In Chemistry and Biology. DOI link for Isotope Effects In Chemistry and Biology. Isotope Effects In Chemistry and Biology bookAuthor: Amnon Kohen, Hans-Heinrich Limbach. This energetically compensating process reduces the activation energy required for proton transfer.

In solvents with hydrogen bonded clusters or chains (water would be one such example), this process can be repeated within the cluster thus allowing the proton to cover large distances (from one side of the cluster to the other) on a very short. The absorption of a photon by a hydroxy-aromatic photoacid triggers a cascade of events contributing to the overall phenomenon of intermolecular excited-state proton transfer.

The fundamental steps involved were studied over the last 20 years using a combination of theoretical and experimental techniques. They are surveyed in this sequel in sequential order, from fast to by:   Hydrogen-transfer reactions; 4v. Ed. by James T.

Hynes et al. Wiley-VCH pages $ Hardcover QD As one of the simplest of chemical reactions, the transfer of hydrogen atoms or ions is thus one of the most fundamental to a broad range of natural phenomena.