Results 31 to 40 of about 40,114 (276)

Acoplanarity, Aromaticity, Chirality, and Helical Twisting Power of Chlorin e6 13(N)-Methylamide-15,17-dimethyl Ester Complexes: Effect of a Metal

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, Viktor Aleksandriiskii, Igor Novikov, Alena Batrakova, Dmitry Belykh, Olga Startseva, Oskar I. Koifman   +6 more
doaj   +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, Alling, Amon, Aufdenkampe, Balcarczyk, Benner, Bertilsson, Boyer, Bro, Brown, Bélanger, Cauwet, Coble, Coble, Coble, Cory, Cory, Cory, Dittmar, E. Bulygina, Fellman, Fellman, Fellman, Finlay, Frey, Geller, Gibson, Gordeev, Guo, Hansell, Helms, Hernes, Hernes, Holmes, Holmes, Hood, Hornberger, Inamdar, Kieber, Kimble, Lafrenière, Laudon, Letscher, Lindsay, Lobbes, McGlynn, McGuire, McKnight, McKnight, Miller, Mopper, Murphy, N. Zimov, Neff, O'Donnell, Opsahl, Opsahl, Opsahl, Osburn, P. J. Mann, Peterson, R. G. M. Spencer, R. M. Holmes, Raymond, S. Davydov, S. Zimov, Sierra, Spencer, Spencer, Spencer, Spencer, Stedmon, Stedmon, Stedmon, Stedmon, Stone, Striegl, Striegl, Stubbins, Tarnocai, Tranvik, Walker, Weishaar, Wu, Zimov   +84 more
core   +1 more source

Novel Synthetic Approach to Heteroatom Doped Polycyclic Aromatic Hydrocarbons: Optimizing the Bottom-Up Approach to Atomically Precise Doped Nanographenes

Molecules, 2021
The success of the rational bottom-up approach to nanostructured carbon materials and the discovery of the importance of their doping with heteroatoms puts under the spotlight all synthetic organic approaches to polycyclic aromatic hydrocarbons.
Giacomo Biagiotti, Ilaria Perini, Barbara Richichi, Stefano Cicchi   +3 more
doaj   +1 more source

A critical review on sustainable biochar system through gasification: energy and environmental applications [PDF]

, 2017
This review lays great emphasis on production and characteristics of biochar through gasification. Specifically, the physicochemical properties and yield of biochar through the diverse gasification conditions associated with various types of biomass were
Chen, Season S., Kwon, Eilhann E., Lee, Jechan, Ok, Yong Sik, Tsang, Daniel C.W., Wang, Chi-Hwa, You, Siming   +6 more
core   +1 more source

Nucleus-independent chemical shift profiles along the intrinsic distortion path for Jahn-Teller active molecules. Study on cyclopentadienyl radical and cobaltocene [PDF]

Journal of the Serbian Chemical Society, 2015
The aromatic/antiaromatic behavior of the cyclopentadienyl anion (Cp-), bis(η5-cyclopentadienyl)iron(II) (Fe(Cp)2), as well as of the Jahn-Teller (JT) active cyclopentadienyl radical (Cp∙) and bis(η5-cyclopentadienyl)cobalt(II) (Co(Cp)2) has ...
Anđelković Ljubica, Perić Marko, Zlatar Matija, Gruden-Pavlović Maja   +3 more
doaj   +1 more source

Nucleus-Independent Chemical Shift (NICS) as a Criterion for the Design of New Antifungal Benzofuranones

Molecules, 2021
The assertion made by Wu et al. that aromaticity may have considerable implications for molecular design motivated us to use nucleus-independent chemical shifts (NICS) as an aromaticity criterion to evaluate the antifungal activity of two series of indol-
María de los Ángeles Zermeño-Macías, Marco Martín González-Chávez, Francisco Méndez, Arlette Richaud, Rodolfo González-Chávez, Luis Enrique Ojeda-Fuentes, Perla del Carmen Niño-Moreno, Roberto Martínez   +7 more
doaj   +1 more source

Dissolved carbon and CDOM in lake ice and underlying waters along a salinity gradient in shallow lakes of Northeast China [PDF]

, 2019
The variations of DOC and DIC concentrations in lake ice and underlying waters were examined in 40 shallow lakes across the Songnen Plain, Northeast China.
Du, Jia, Jacinthe, Pierre-André, Song, Kaishan, Wen, Zhidan, Zhao, Ying   +4 more
core   +1 more source

Too Persistent to Resist: Aromaticity in 16e Osmapentalene Radicals Survives Regardless of Redox

Chemistry
As one of the most important concepts in organic chemistry, aromaticity has attracted considerable attention from both theoretical and experimental chemists.
Shijie Pan, Jun Yan, Weitang Li, Zhigang Shuai, Jun Zhu   +4 more
doaj   +1 more source

Aromaticity in a Surface Deposited Cluster: Pd$_4$ on TiO$_2$ (110)

, 2011
We report the presence of \sigma-aromaticity in a surface deposited cluster, Pd$_4$ on TiO$_2$ (110). In the gas phase, Pd$_4$ adopts a tetrahedral structure. However, surface binding promotes a flat, \sigma-aromatic cluster.
Alexandrova A. N., Alexandrova A. N., Alexandrova A. N., Anastassia N. Alexandrova, Averkiev B. B., Boldyrev A. I., Boldyrev A. I., Duncan W. R., Fowler P. W., Fowler P. W., Frank M., Fu Q., Hakkinen H., Haruta M., Heiz U., Herzing A. A., Jin Zhang, Juselius J., Kaden W. E., Kuznetsov A. E., Kuznetsov A. E., Kuznetsov A. E., Kuznetsov A. E., Kuznetsov A. I., Lee S., Li X., Li X., Li X. W., Li X. W., Long R., Lopez N., Meiwes-Broer K.-H., Moruzzi V. L., Murahashi T., Nolte P., Remediakis L., Robinson G. H., Röttgen M. A., Sanchez A., Sergeeva A. P., Sergeeva A. P., Sergeeva A. P., Sergeeva A. P., Vajda S., Valden M., Valden M., Yoon B., Zhai H.-J., Zhai Y., Zhang J., Zubarev D. Yu., Zubarev D. Yu.   +51 more
core   +1 more source

Synthesis and Properties of NitroHPHAC: The First Example of Substitution Reaction on HPHAC

Molecules, 2020
Hexapyrrolohexaazacoronene (HPHAC) is one of the N-containing polycyclic aromatic hydrocarbons in which six pyrroles are fused circularly around a benzene.
Yoshiki Sasaki, Masayoshi Takase, Shigeki Mori, Hidemitsu Uno   +3 more
doaj   +1 more source