Results 11 to 20 of about 9,420,423 (308)

Steric Effects on Electroosmotic Nano-Thrusters under High Zeta Potentials

open access: yesMathematics, 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

Geometric and energetic data from quantum chemical calculations of halobenzenes and xylenes

open access: yesData in Brief, 2020
This article presents theoretical data on geometric and energetic features of halobenzenes and xylenes. Data were obtained from ab initio geometry optimization and frequency calculations at HF, B3LYP, MP2 and CCSD levels of theory on 6–311++G(d,p) basis ...
Sopanant Datta, Taweetham Limpanuparb
doaj   +1 more source

Steric and Stereochemical Modulation in Pyridyl- and Quinolyl-Containing Ligands

open access: yesMolecules, 2016
Nitrogen-containing pyridine and quinoline are outstanding platforms on which excellent ionophores and sensors for metal ions can be built. Steric and stereochemical effects can be used to modulate the affinity and selectivity of such ligands toward ...
Zhaohua Dai
doaj   +1 more source

Ferrocenoyl-adenines: substituent effects on regioselective acylation

open access: yesBeilstein Journal of Organic Chemistry, 2022
A series of N6-substituted adenine–ferrocene conjugates was prepared and the reaction mechanism underlying the synthesis was explored. The SN2-like reaction between ferrocenoyl chloride and adenine anions is a regioselective process in which the product ...
Mateja Toma   +5 more
doaj   +1 more source

Kinetics of the reaction of 5-substituted orotic acids with diazodiphenylmethane [PDF]

open access: yesJournal of the Serbian Chemical Society, 2004
Rate konstants for the reaction of eight 5-substituted orotic acids with diazodiphenylmethane (DDM) in dimethylformamide (DMF) were determined at 30 ºC by the known spectrophotometricmethod.
Jovanović Bratislav Ž.   +2 more
doaj   +3 more sources

Electronic integral characteristics of groups in the fluoro-substituted of isobutan and neopentan [PDF]

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2018
Within a «quantum theory of atoms in molecules» (QTAIM) the equilibrium geometry and the electron structure of fluoro-substituted molecules (CH3)2−CH−CH(3-n)Fn and (CH3)3−C−CH(3-n)Fn, where 1 ≤ n ≤ 3, were studied.
A.V. Kotomkin   +3 more
doaj   +1 more source

Steric- and Electronic-Controlled Intramolecular [2 + 2]-Cycloaddition of Cyclohexadienone-Containing 1,7-Enynes

open access: yes, 2022
Herein we have developed the silver-catalyzed electronic- and steric-controlled intramolecular formal [2 + 2]-cycloaddition of alkyne-tethered cyclohexadienones.
Anandarao Munakala (9306436)   +7 more
core   +1 more source

Evaluation of Steric Effect of Hydroquinone, Tert-Butyl Hydroquinone and 2, 5-Ditert-Butyl Hydroquinone by using a Briggs-Rauscher Oscillator

open access: yesInternational Journal of Electrochemical Science, 2018
This article indicated a novel methodology of evaluation of steric effect of (hydroquinone (HQ), tert-Butyl hydroquinone (TBHQ) and 2, 5-ditert-butyl hydroquinone (DTBHQ)) by using a Briggs-Rauscher chemical oscillating system.
Saif Ullah   +4 more
doaj   +1 more source

Steric-Deficient Oligoglycine Surrogates Facilitate Multivalent and Bifunctional Nanobody Synthesis via Combined Sortase A Transpeptidation and Click Chemistry

open access: yes, 2023
Conferring multifunctional properties to proteins via enzymatic approaches has greatly facilitated recent progress in protein nanotechnology. In this regard, sortase (Srt) A transpeptidation has facilitated many of these developments due to its ...
Alex Fulcher (1859869)   +3 more
core   +1 more source

Quantification of the Steric Properties of 1,8-Naphthyridine Based Ligands in Dinuclear Complexes [PDF]

open access: yes, 2022
Steric properties of ligands are an important parameter for tuning the reactivity of the corresponding complexes. For various ligands used in mononuclear complexes, methods have been developed to quantify their steric bulk.
Daniël Laurens Johannes, Broere   +2 more
core   +2 more sources

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