Steric effects in cyclization reactions [PDF]
Australian Journal of Chemistry, 1976 Calculations of geometric probability factors indicate that steric effects are important in determining whether the cyclization of β-substituted diallylmethylammonium ions results in five- or six-memberedrings. Evidence is obtained of the direction of intramolecular attack.
SD Hamann +3 more
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Poisson-Fermi Formulation of Nonlocal Electrostatics in Electrolyte Solutions [PDF]
Computational and Mathematical Biophysics, 2017 We present a nonlocal electrostatic formulation of nonuniform ions and water molecules with interstitial voids that uses a Fermi-like distribution to account for steric and correlation efects in electrolyte solutions.
Liu Jinn-Liang +2 more
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Electrostatic and steric effects underlie acetylation-induced changes in ubiquitin structure and function [PDF]
Nature Communications, 2022 Ubiquitin is not only a posttranslational modifier but itself is subject to modifications, such as acetylation. Characterization of distinct acetylated ubiquitin variants reveals that each acetylation site has a particular impact on ubiquitin structure ...
Simon Maria Kienle +9 more
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A Highly Efficient Regioselective Addition of Acetylides to Enediones Based on Steric Effects [PDF]
Molecules, 2013 A simple and efficient strategy for the synthesis of 1-ethynylcyclohex-2-enol derivatives was developed utilizing regioselective addition of acetylides to enediones based on steric effects.
Zhaohai Qin +6 more
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Review and Modification of Entropy Modeling for Steric Effects in the Poisson-Boltzmann Equation [PDF]
Entropy, 2020 The classical Poisson-Boltzmann model can only work when ion concentrations are very dilute, which often does not match the experimental conditions.
Tzyy-Leng Horng
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Mercury(II) Complexes of Anionic N-Heterocyclic Carbene Ligands: Steric Effects of the Backbone Substituent [PDF]
Molecules, 2020 Mercury(II) complexes (Me-maloNHCDipp)HgCl (1b), (t-Bu-maloNHCDipp)HgCl (2b) and (t-Bu-maloNHCDipp)HgMe (2c) supported by anionic N-heterocyclic carbenes have been obtained in good yields from the reaction of the potassium salt of N-heterocyclic carbene ...
Chandrakanta Dash +2 more
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London dispersion forces and steric effects within nanocomposites tune interaction energies and chain conformation [PDF]
Communications ChemistryThe interplay between attractive London dispersion forces and steric effects due to repulsive forces resulting from the Pauli principle often determines the geometry and stability of nanostructures.
Baode Zhang +5 more
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Inorganics, 2023 Three homoleptic Hg(S2CNR2)2, for R = ethyl (1), isobutyl (2), and cyclohexyl (3), compounds apparently exhibit a steric-dependent supramolecular association in their crystals.
Rosa M. Gomila +2 more
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PB-steric equations: A general model of Poisson-Boltzmann equations [PDF]
SIAM J. Appl. Math. 83 (2023) 1603-1622, 2023 When ions are crowded, the effect of steric repulsion between ions (which can produce oscillations in charge density profiles) becomes significant and the conventional Poisson-Boltzmann (PB) equation should be modified. Several modified PB equations were developed but the associated total ionic charge density has no oscillation.
arxiv +1 more source
Steric Effects on Space Electroosmotic Thrusters in Soft Nanochannels
Mathematics, 2021 The influence of steric effects on the performances of space electroosmotic thrusters (EOTs) was numerically delineated in soft nanochannels for which its walls are covered with polyelectrolyte materials.
Jiaxuan Zheng, Beinan Jia, Yongjun Jian
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