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Showing 81-100 of 6,234 results
  1. Borasilylenes in Focus: Topological Effects of Nitrogen Atoms by DFT

    DFT calculations in combination with appropriate isodesmic reactions are employed to assess topological effects of nitrogens on thermodynamic...

    Nastaran Abedini, Mohammad Zaman Kassaee, Peter T. Cummings in Silicon
    Article 19 November 2020
  2. Exploring the electronic structure of knotted proteins: the case of two ornithine transcarbamylase family

    Context:

    Geometrical knots are rare structural arrangements in proteins in which the polypeptide chain ties itself into a knot, which is very...

    José Cícero Alves Silva, Igor Barden Grillo, ... Gerd Bruno Rocha in Journal of Molecular Modeling
    Article 15 July 2024
  3. Telescoped synthesis of vicinal diamines via ring-opening of electrochemically generated aziridines in flow

    A vicinal diamine motif can be found in numerous natural compounds and pharmaceuticals, making it an important synthetic target. Herein, we report a...

    Marharyta Laktsevich-Iskryk, Anastasiya Krech, ... Maksim Ošeka in Journal of Flow Chemistry
    Article 29 November 2023
  4. Substituent Effect On Structure, Stability, and Electronic Properties of the Novel Bicyclic Silylenes at DFT

    The density functional theory (DFT) calculations are carried out to assay the effects of nitrogen atoms on the stability and reactivity of singlet...

    Nastaran Abedini, Mohamad Zaman Kassaee in Silicon
    Article 23 February 2021
  5. Porous polymer beads with grafted poly(tertiary amine) as catalysts for fixation of carbon dioxide into propylene carbonate

    Porous polymer beads with grafted poly(tertiary amine) were prepared by grafting triethylenetetramine to porous crosslinked poly(methyl acrylate)...

    Weiwei Niu, Zhiyi Yin, ... Husheng Yan in Polymer Bulletin
    Article 06 May 2024
  6. A Comparative Study of the Performance of Polyaluminum Chloride-Sodium Alginate and Polyaluminum Chloride-Chitosan Composite Coagulants in Dam Water Treatment

    Polyaluminum chloride (PAC)/natural polyelectrolyte composite coagulants have received considerable attention recently due to their exceptional...

    Abdellah-Anouar. El Foulani, Omar Ounas, ... Mohammed Chafi in Journal of Polymers and the Environment
    Article 27 May 2023
  7. Theoretical insight into the mechanism and selectivity of the [3 + 2] cycloaddition reaction of N-methyl-1-phenylmethanimine oxide and bicyclopropylidene from the MEDT perspective

    The mechanism and regioselectivity of [3 + 2] cycloaddition (32CA) reactions of N-methyl-1-phenylmethanimine oxide nitrone 1 and bicyclopropylidene 2 ...

    Haydar A. Mohammad-Salim, Jesus Vicente de Julián-Ortiz in Structural Chemistry
    Article 26 July 2023
  8. In situ formation of reactive (di)gallenes for bond activation

    Access to reactive low-valent main-group complexes capable of bond activation commonly requires multistep syntheses, limiting options for electronic...

    Philipp Dabringhaus, Harald Scherer, Ingo Krossing in Nature Synthesis
    Article 26 April 2024
  9. A theoretical investigation into novel germylenes: effects of nitrogen substitution on stability and multiplicity

    The effects of substituting nitrogen atoms on the stability of novel singlet (s) and triplet (t) forms of germylenes ( 1 20 ) are compared and...

    Nastaran Abedini, Mohammad Z. Kassaee in Journal of Molecular Modeling
    Article 31 October 2020
  10. Alcoholysis of oxyphenylene-based super engineering plastics mediated by readily available bases

    Herein we describe the alcoholysis of super engineering plastics under mild conditions. Treatment of polysulfone (PSU) with methanol mediated by...

    Yasunori Minami, Rena Honobe, ... Masaru Yoshida in Polymer Journal
    Article 04 January 2024
  11. A molecular electron density theory study on the [3 + 2] cycloaddition reaction of a 2,4-dienone and a nitrone: regioselectivity, diastereoselectivity, energetic aspects, and molecular mechanism

    [3 + 2] Cycloaddition reaction of N -methyltrifluoromethylmethylene nitrone ( MFN ) and 2 E ,4 E -5-(benzo[1,3]dioxol-5-yl)-1-(piperidin-1-yl)penta-2,4-dien-...

    Mousa Soleymani, Mahdieh Chegeni, ... Reza Khazaeinejad in Monatshefte für Chemie - Chemical Monthly
    Article 08 May 2024
  12. Molecular docking, expounding the regiospecificity, stereoselectivity, and the mechanism of [5+2] cycloaddition reaction between ethereal ether and oxidopyrylium

    Application of molecular electron density theory (MEDT) to investigate the [5+2] cycloaddition reaction between oxidopyrylium and ethervinylether, we...

    Anas Ouled Aitouna, Noureddine Mazoir, ... Radomir Jasiński in Structural Chemistry
    Article 12 October 2023
  13. Prospects and challenges for nitrogen-atom transfer catalysis

    Conversion of C–H bonds to C–N bonds via C–H amination promises to streamline the synthesis of nitrogen-containing compounds. Nitrogen-group...

    Mario N. Cosio, David C. Powers in Nature Reviews Chemistry
    Article 13 April 2023
  14. Effects of nitrogen atoms on the stability and reactivity of tricyclic boracarbenes by DFT

    Following our quest for novel carbenes, effects of substituting 1 to 5 nitrogen atoms on the stability and reactivity of singlet (s) and triplet (t)...

    Nastaran Abedini, Mohamad Z. Kassaee, P. T. Cummings in Theoretical Chemistry Accounts
    Article 10 August 2020
  15. Kinetic and mechanistic studies of the first step of the reaction between thiols and selenite

    Here, we report the results of kinetic and mechanistic studies of the first step of reaction between thiols (viz., cysteine, N -acetylcysteine,...

    Ilia A. Dereven’kov, Pavel A. Molodtsov, Sergei V. Makarov in Reaction Kinetics, Mechanisms and Catalysis
    Article 29 September 2020
  16. Theoretical implications on the [3 + 2] cycloaddition reactions of dibromoformaldoxime and (Z)-, (E)-3-(4-chlorobenzylidene)-1-methylindolin-2-one in terms of FMO, MEDT, and distortion-interaction theories

    Regio- and stereoselectivities of the [3 + 2] cycloaddition reactions of dibromoformaldoxime and (Z) -, (E) -3-(4-chlorobenzylidene)-1-methylindolin-2-o...

    Omid Amiri, Hormoz Khosravi, Ayoob Bazgir in Structural Chemistry
    Article 16 August 2023
  17. A MEDT study of the mechanism and selectivity of the hetero-Diels–Alder reaction between 3-benzoylpyrrolo[1,2-c][1,4]-benzoxazine-1,2,4-trione and vinyl acetate

    The chemo-, regio-, and stereoselectivity of the hetero-Diels–Alder reaction between 3-benzoylpyrrolo[1,2- c ][1,4]benzoxazine-1,2,4-trione and vinyl...

    Soukaina Ameur, Ali Barhoumi, ... Luis R. Domingo in Chemistry of Heterocyclic Compounds
    Article 01 March 2023
  18. Chemoselective cycloisomerization of O-alkenylbenzamides via concomitant 1,2-aryl migration/elimination mediated by hypervalent iodine reagents

    As an ambident nucleophile, controlling the reaction selectivities of nitrogen and oxygen atoms in amide moiety is a challenging issue in organic...

    Jiaxin He, Feng-Huan Du, ... Yunfei Du in Communications Chemistry
    Article Open access 17 June 2023
  19. ADME Study, Molecular Docking, Elucidating the Selectivities and the Mechanism of [4 + 2] Cycloaddition Reaction Between (E)-N ((dimethylamino)methylene)benzothioamide and (S)-3-acryloyl-4-phenyloxazolidin-2-one

    The molecular electron density theory (MEDT) was employed to examine the [4 + 2] cycloaddition reaction between (E)- N -((dimethylamino)methylene)benzot...

    Mhamed Atif, Ali Barhoumi, ... Mohammed El Idrissi in Molecular Biotechnology
    Article 08 March 2024
  20. DFT, Fukui indices, and molecular dynamic simulation studies on corrosion inhibition characteristics: a review

    The density functional theory (DFT), a well-known tool, can be employed to predict the high electron density position and HOMO–LOMO difference in...

    Nur Zalin Khaleda Razali, Wan Nur Shakirah Wan Hassan, ... Nur Nadia Dzulkifli in Chemical Papers
    Article 25 October 2023
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