Results 11 to 20 of about 264,880 (337)
Insights on tert-butyl alkylation effects on fluorobenzene
Scientific African, 2021 Directing effects of substituents on the benzene ring, ortho and para directors by electron donating groups and meta directors using electron withdrawing groups have been studied and reported widely. In particular and for many years, the directing effect
Lewis Mtashobya
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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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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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Micromachines, 2021 In this paper, the combined effect of the fluid rheology, finite-sized ions, and slippage toward augmenting a non-reacting solute’s mass transport due to an oscillatory electroosmotic flow (OEOF) is determined.
Ruben Baños +3 more
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A Highly Efficient Regioselective Addition of Acetylides to Enediones Based on Steric Effects
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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UNA PROPUESTA PARA ENSEÑAR EL EFECTO DE LA FORMA DE LAS MOLÉCULAS EN LA REACTIVIDAD QUÍMICA
Química Nova, 2015 We address the concept of steric effect in the pursuit of establishing quantitative correlations between reactivity of molecules and their molecular shape.
José G. Cermeños-Estrada +2 more
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Steric Effects on Electroosmotic Nano-Thrusters under High Zeta Potentials
Mathematics, 2021 Here, space electroosmotic thrusters in a rigid nanochannel with high wall zeta potentials are investigated numerically, for the first time, considering the effect of finite size of the ionic species. The effect, which is called a steric effect, is often
Jiaxuan Zheng, Siyi An, Yongjun Jian
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Molecules, 2001 Benzonorbornadiene 21, 7-spirocyclopropylbenzonorbornadiene 23, 7,7-dimethylbenzonorbornadiene 25, and 7-spirocyclopentylbenzonorbornadiene 27 have been reacted with 3,6-di(2-pyridyl)-s-tetrazine (rate: 21>23>25=27) to form symmetrical 4,5 ...
Peter A. Harrison, Ronald N. Warrener
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In silico geometric and energetic data of all possible simple rotamers made of non-metal elements
Data in Brief, 2020 This article presents theoretical data on geometric and energetic features of halogenated rotamers of the following backbone structures, CC, NN, PP, OO, SS, NP, OS, CN, CP, CO, CS, NO, NS, PO and PS.
Taweetham Limpanuparb +3 more
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Hypervariability of accessible and inaccessible conformational space of proteins
Current Research in Structural Biology, 2021 Proteins undergo motions in a range of amplitudes, from domain motions to backbone rotations, leading to changes in (φ,ψ) torsion angles and small-scale bond vibrations and angle bending.
Ashraya Ravikumar +1 more
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