Results 31 to 40 of about 443,970 (323)
Journal of Molecular Structure, 2014 We report experimental and theoretical evidences for supramolecular aromaticity as a new concept to be widely used in researches about molecular crystals. CSD survey regarding frequently encountered resonance-assisted H-bonds (RAHBs) in formic acid, formamide, formimidamide, formic acid-formamide, and formamide-formimidamide dimers shows that ...
Karabiyik, Hande +2 more
openaire +3 more sources
Química Nova, 2009 In this paper the evolution of the concept of aromaticity is discussed. It considers not only historical aspects of the aromaticity concept but also the different criteria (theoretical and experimental) that have appeared to explain the properties of the
Giovanni Finoto Caramori +1 more
doaj +1 more source
Characterization of the Structure of Saudi Crude Asphaltenes by X-ray Diffraction [PDF]
, 1997 Structural characterization studies have been carried out on four commercial Saudi Arabian crude oils. The aromaticity and crystallite parameters of the asphaltenes were studied by X-ray diffraction methods and compared to the average structural ...
Ali, Mohammad F. +2 more
core +4 more sources
Photoinduced Changes in Aromaticity Facilitate Electrocyclization of Dithienylbenzene Switches
Journal of the American Chemical Society, 2020 The concepts of excited-state aromaticity and antiaromaticity have in recent years with increasing frequency been invoked to rationalize the photochemistry of cyclic conjugated organic compounds, with the long-term goal of using these concepts to improve
Baswanth Oruganti +4 more
semanticscholar +1 more source
Influence of production variables and starting material on charcoal stable isotopic and molecular characteristics [PDF]
, 2008 We present a systematic study on the effect of starting species, gas composition, temperature, particle size and duration of heating upon the molecular and stable isotope composition of high density (mangrove) and low density (pine) wood.
Alemany +76 more
core +1 more source
Non-aromatic annulene-based aggregation-induced emission system via aromaticity reversal process
Nature Communications, 2019 Aggregation-induced emission (AIE) is a photophysical phenomenon correlated closely with the excited-state intramolecular motions. Although AIE has attracted increasing attention due to the significant applications in biomedical and optoelectronics, an ...
Zheng Zhao +20 more
semanticscholar +1 more source
Controls on the composition and lability of dissolved organic matter in Siberia's Kolyma River basin [PDF]
, 2012 High-latitude northern rivers export globally significant quantities of dissolved organic carbon (DOC) to the Arctic Ocean. Climate change, and its associated impacts on hydrology and potential mobilization of ancient organic matter from permafrost, is ...
A. Davydova +84 more
core +1 more source
Сyclo[18]Carbon: Insight into Electronic Structure, Aromaticity and Surface Coupling.
Journal of Physical Chemistry Letters, 2019 Cyclo[18]carbon (C18) is studied computationally at density functional theory (DFT) and ab initio levels to obtain insights into its electronic structure, aromaticity, and adsorption properties on the NaCl surface.
G. Baryshnikov +4 more
semanticscholar +1 more source
Molecules, 2020 Systematic scrutiny is carried out of the ability of multicentre bond indices and the NOEL-based similarity index dAB to serve as excited-state aromaticity criteria.
Robert Ponec +2 more
doaj +1 more source
Inorganics, 2023 The experimental and theoretical study of the influence of metal complexing on geometry, aromaticity, chirality, and the ability to twist the nematic phase by complexes based on modified natural chlorin e6 was carried out.
Vladimir Burmistrov +6 more
doaj +1 more source