Results 71 to 80 of about 269,366 (337)

Ferrocenoyl-adenines: substituent effects on regioselective acylation

Beilstein 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, Gabrijel Zubčić, Jasmina Lapić, Senka Djaković, Davor Šakić, Valerije Vrček   +5 more
doaj   +1 more source

Steric Effects of Alkyl Ammonium Salts on the Combustion of Exchanged Smectite Clays [PDF]

, 2018
Bomb calorimetry was explored as a new method for determining the cation exchange capacity (CEC) of clays. Smectite clays were modified with several alkyl ammonium salts varying in number of carbons and the spatial orientation of the carbons about the ...
Keith, Celeste A.
core   +1 more source

A new perspective on the analysis of helix-helix packing preferences in globular proteins

, 2003
For many years it had been believed that steric compatibility of helix interfaces could be the source of the observed preference for particular angles between neighbouring helices as emerging from statistical analysis of protein databanks.
Seno, F., Trovato, A.
core   +1 more source

Unlocking Ultra‐Long Cycle Stability of Li Metal Electrode by Separators Modified by Porous Red Phosphorus Nanosheets

Advanced Functional Materials, EarlyView.
Coating the standard polypropylene separator with a porous red phosphorous nanosheet greatly improves cycling performance in Li electrode cells. The phosphorus‐based surface chemistry deactivates electrolyte solvent decomposition and enhances the cleavage of F‐containing salt, resulting in an inorganic‐dominated electrolyte interphase (SEI) composition
Jiangpeng Wang, Mingzi Sun, Feng Lang, Zhijun Cai, Xitao Hu, Yao Gao, Chao Lin, Xueqiang Zhang, Bolong Huang, Quan Li   +9 more
wiley   +1 more source

Semiempirical and Ab Initio calculation of the molecular structures of substituted N-Benzoylimidazoles

Semina: Ciências Exatas e Tecnológicas, 2001
Possible reasons of low reactivities of some N-(2-X-benzoyl) imidazoles utilising ab initio Hartree-Fock calculations have been studied in imidazole-catalyzed hydrolysis.
Paulo Meneghelli
doaj  

(How) does 1,3,5-triethylbenzene scaffolding work? Analyzing the abilities of 1,3,5-triethylbenzene- and 1,3,5-trimethylbenzene-based scaffolds to preorganize the binding elements of supramolecular hosts and to improve binding of targets

Beilstein Journal of Organic Chemistry, 2012
1,3,5-triethylbenzenes have been widely used as supramolecular templates to organize molecular-recognition elements. It is believed that the steric-gearing effect of the 1,3,5-triethylbenzene template directs the binding elements toward the same face of ...
Xing Wang, Fraser Hof
doaj   +1 more source

Hydrogen Transfer from Hantzsch 1,4-Dihydropyridines to Carbon-Carbon Double Bonds under Microwave Irradiation

Molecules, 2002
1,4-Dihydropyridines (DHPs) have been used in the reduction of carbon-carbon double bonds under microwave irradiation without solvent. The efficiency of the reactions is dramatically dependent on the steric effects in the DHPs and on the electronic ...
Jean Jacques Vanden Eynde, Didier Barbry, Guy Cordonnier, Séverine Torchy   +3 more
doaj   +1 more source

Crystallinity and phase separation induced morphological modulation for efficient ternary all-polymer solar cells

APL Energy, 2023
All-polymer solar cells (all-PSCs) have attracted enormous attention and achieved significant progress in recent years due to their long-term stability and excellent film stretchability.
Mengzhen Sha, Bili Zhu, Qian Wang, Ping Deng, Xunfan Liao, Hang Yin, Xiaotao Hao   +6 more
doaj   +1 more source

Cu‐Based MOF/TiO2 Composite Nanomaterials for Photocatalytic Hydrogen Generation and the Role of Copper

Advanced Functional Materials, EarlyView.
HKUST‐1/TiO2 composite materials show a very high photocatalytic hydrogen evolution rate which increases as a function of the irradiation time until reaching a plateau and even surpasses the performance of the 1%Pt/TiO2 material after three photocatalytic cycles.
Alisha Khan, Marie Le Pivert, Alireza Ranjbari, Diana Dragoe, Daniel Bahena‐Uribe, Christophe Colbeau‐Justin, Christian Herrero, Dorota Rutkowska‐Zbik, Johnny Deschamps, Hynd Remita   +9 more
wiley   +1 more source

steric isotope effect

, 2014
Citation: 'steric isotope effect' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.S06001 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source