Results 111 to 120 of about 5,976 (269)

Aromatic, or Antiaromatic, That Is the Question: [PDF]

, 2021
Ben Joseph R. Cuyacot, Cina Foroutan‐Nejad   +1 more
openalex   +2 more sources

Aromaticity as a Guiding Concept for Spectroscopic Features and Nonlinear Optical Properties of Porphyrinoids

Molecules, 2018
With their versatile molecular topology and aromaticity, porphyrinoid systems combine remarkable chemistry with interesting photophysical properties and nonlinear optical properties.
Tatiana Woller, Paul Geerlings, Frank De Proft, Benoît Champagne, Mercedes Alonso   +4 more
doaj   +1 more source

Изучение ароматичности пятичленных мезоионных гетероциклов [PDF]

, 2011
Результаты основных критериев ароматичности (NICS, ASE, HOMA, I5) 54 пятичленных мезоионных гетероциклов, полученные с помощью квантово-химических расчетов произведенных в валентно-расщепленном базисе 6-31G* в рамках метода Хартри-Фока и теории ...
Моржерин, Ю. Ю., Нейн, Ю. И.   +1 more
core  

Energetic Preferences in Cyclic π-Conjugated Systems: Aromaticity Localizes and Antiaromaticity Spreads

Chemistry
Cyclic π-conjugated organic species are classical examples of (anti)aromatic compounds. Two key features that characterize their (anti)aromatic behavior are the aromatic stabilization (or destabilization) energy and the degree of bond-length equalization
Miquel Solà, Luigi Cavallo
doaj   +1 more source

Synthesis and electronic properties of polycyclic aromatic hydrocarbons doped with phosphorus and sulfur

, 2016
International ...
Bouit, Pierre-Antoine, Delaunay, W., Hissler, M., Mocanu, A., Nyulászi, L., Pascal, Simon, Szűcs, R.   +6 more
core   +3 more sources

Friedel–Crafts acylation of antiaromatic norcorroles: electronic and steric modulation of the paratropic current

, 2021
Sha Li, Oskar Smaga, Yahan Sun, Xiaofang Li, Miłosz Pawlicki, Marzena Sukniewicz, Piotr J. Chmielewski   +6 more
openalex   +2 more sources

Emergence of highly elaborated π-space and its function [PDF]

, 2013
research ...
赤阪 健
core  

Hyperconjugative Antiaromaticity Activates 4H-Pyrazoles as Inverse-Electron-Demand Diels-Alder Dienes.

Organic Letters, 2019
The Diels-Alder reactivity of 4,4-difluoro-3,5-diphenyl-4H-pyrazole was investigated experimentally and computationally with endo-bicyclo[6.1.0]non-4-yne.
Brian J. Levandowski, Nile S. Abularrage, K. Houk, Ronald T. Raines   +3 more
semanticscholar   +1 more source

Nucleophilicity/Electrophilicity Excess in Analyzing Molecular Electronics

, 2005
Intramolecular electron transfer capability of all metal aromatic and anti-aromatic aluminum cluster compounds is studied in terms of density functional theory based global and local reactivity descriptors.
Chattaraj, P. K., Roy, D. R., Subramanian, V.   +2 more
core  

Recent advances in antiaromatic metallacycles

Dalton Transactions
Recently, several antiaromatic metallacycles are reported, establishing a new area of (anti)aromaticity. Herein, we briefly review the syntheses and characterizations of these fascinating antiaromatic structures.
Lei Li, Yang Li, Wenfeng Jiang, Wei Bai
openaire   +2 more sources