Results 1 to 10 of about 147,609 (247)

Steric Effects in Electrolytes: A Modified Poisson-Boltzmann Equation [PDF]

, 1998
The adsorption of large ions from solution to a charged surface is investigated theoretically. A generalized Poisson--Boltzmann equation, which takes into account the finite size of the ions is presented.
A. G. Volkov, B. V. Derjaguin, B. W. Ninham, D. Henderson, D. L. Chapman, David Andelman, E. J. W. Verwey, G. Gouy, Henri Orland, I. Borukhov, Itamar Borukhov, J. N. Israelachvili, O. Stern, P. Attard, P. Debye, R. J. Hunter, R. Kjellander, R. Kjellander, V. A. Parsegian, Yu. Ya. Gurevich   +19 more
core   +2 more sources

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
doaj   +1 more source

A Computational Chemistry Investigation of the Influence of Steric Bulk of Dithiocarbamato-Bound Organic Substituents upon Spodium Bonding in Three Homoleptic Mercury(II) Bis(N,N-dialkyldithiocarbamato) Compounds for Alkyl = Ethyl, Isobutyl, and Cyclohexyl

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, Edward R. T. Tiekink, Antonio Frontera   +2 more
doaj   +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
doaj   +1 more source

Steric effects of alkyl substituents in silicon chemistry

ARKIVOC, 2006
Anu Ploom, Dmitri Panov, Ants Tuulmets
doaj   +3 more sources

Steric and Slippage Effects on Mass Transport by Using an Oscillatory Electroosmotic Flow of Power-Law Fluids

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, José Arcos, Oscar Bautista, Federico Méndez   +3 more
doaj   +1 more source

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, Yumei Xiao, Shijie Du, Xiaoyong Yuan, Dongyan Yang, Chuan Wan, Xiaoqiang Han   +6 more
doaj   +1 more source

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, John J. Pérez-Moncada, Daniel Barragán   +2 more
doaj   +1 more source

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, CC, NN, PP, OO, SS, NP, OS, CN, CP, CO, CS, NO, NS, PO and PS.
Taweetham Limpanuparb, Sopanant Datta, Kridtin Chinsukserm, Peerayar Teeraniramitr   +3 more
doaj   +1 more source

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
doaj   +1 more source