Results 11 to 20 of about 17,342 (289)

Halogens Enhance Haze Pollution in China [PDF]

, 2021
Unidad de excelencia María de Maeztu CEX2019-000940-MSevere and persistent haze events in northern China, characterized by high loading of fine aerosol especially of secondary origin, negatively impact human health and the welfare of ecosystems. However,
Saiz López, Alfonso, Chen, Jianmin, Mu, Yujing, Wang, Tao, Fernández, Rafael P., Cuevas Rodríguez, Carlos Alberto, Fu, Xiao, Peng, Xiang, Badia, Alba, Jimenez, Jose L., Cuevas, Carlos A., Saiz-Lopez, Alfonso, Li, Qinyi, Saiz-Lopez, A., Fernandez, Rafael Pedro, Wang, Weihao   +15 more
core   +3 more sources

Halogen–Halogen Nonbonded Interactions [PDF]

ACS Omega, 2021
Halogen-halogen nonbonded interactions were studied for methyl halides and phenyl halides using both B3LYP and MP2 along with 6-311+G* and aug-cc-pVTZ. With the methyl halides, the linear approach was found to lead to little stabilization, whereas the "90°" approach gave 1-2 kcal/mol. This modest stabilization was due to long-range electron correlation
openaire   +3 more sources

Halogens and the chemistry of the free troposphere [PDF]

Atmospheric Chemistry and Physics, 2005
The role of halogens in both the marine boundary layer and the stratosphere has long been recognized, while their role in the free troposphere is often not considered in global chemical models.
D. J. Lary, D. J. Lary
doaj   +1 more source

Activation of a Metal‐Halogen Bond by Halogen Bonding [PDF]

Angewandte Chemie International Edition, 2020
Abstract In recent years, the non‐covalent interaction of halogen bonding (XB) has found increasing application in organocatalysis. However, reports of the activation of metal‐ligand bonds by XB have so far been limited to a few reactions with elemental iodine or bromine. Herein, we present the activation of metal‐halogen bonds by two
Julian Wolf, Florian Huber, Nikita Erochok, Flemming Heinen, Vincent Guérin, Claude Y. Legault, Stefan F. Kirsch, Stefan M. Huber   +7 more
openaire   +4 more sources

Type II halogen···halogen contacts are halogen bonds [PDF]

IUCrJ, 2013
Cl/Br/I alternative substitutions in a series of dihalophenols indicate that type I and type II halogen···halogen contacts have different chemical nature. Only the latter ones qualify as true halogen bonds, according to the recent IUPAC definition.
METRANGOLO, PIERANGELO, RESNATI, GIUSEPPE   +1 more
openaire   +4 more sources

Probing halogen–halogen interactions in solution [PDF]

Physical Chemistry Chemical Physics, 2017
Weak but measurable: a supramolecular balance detects interactions between CBr3groups in solution and estimates the corresponding free energy (0.2 kJ mol−1).
Ayzac, V., Raynal, Matthieu, Isare, B., Idé, J., Brocorens, P., Lazzaroni, R., Etienne, T., Monari, A., Assfeld, Xavier, Bouteiller, Laurent   +9 more
openaire   +3 more sources

Evidence for an Active, Transcrustal Magma System in the Last 60 ka and Eruptive Degassing Budget (H2O, CO2, S, F, Cl, Br): The Case of Dominica

Geochemistry, Geophysics, Geosystems, 2020
The Morne Trois Pitons‐Micotrin volcanic complex on the island of Dominica (Lesser Antilles) emitted a series of plinian eruptions between 18 and 9 ka BP.
T. d'Augustin, H. Balcone‐Boissard, G. Boudon, C. Martel, E. Deloule, P. Bürckel   +5 more
doaj   +1 more source

Preparo de amostras de combustíveis fósseis por piroidrólise para a determinação de flúor e cloro Fluoride and chloride determination in fossil fuels after sample preparation by pyrohydrolysis

Química Nova, 2010
Pyrohydrolysis is proposed for fossil fuels sample preparation for further fluorine and chlorine determination. Samples were heated during 10 min at temperatures up to 1000 °C.
Fabiane G. Antes, Fábio A. Duarte, Éder L. M. Flores, José Neri G. Paniz, Érico M. M. Flores, Valderi L. Dressler   +5 more
doaj   +1 more source

Defect Processes in Halogen Doped SnO₂

Applied Sciences, 2021
In the present study, we performed density functional theory calculations (DFT) to investigate structural changes and their impact on the electronic properties in halogen (F, Cl, Br, and I) doped tin oxide (SnO2).
Petros-Panagis Filippatos, Nikolaos Kelaidis, Maria Vasilopoulou, Dimitris Davazoglou, Alexander Chroneos   +4 more
doaj   +1 more source

Composition of minerals (apatite, magnenite, ilmenite and others) as an index of conditions of layered massive ore formation in the laminated gabbro of Kusa intrusion (the Southern Urals)

Литосфера, 2019
Research subject. In this research, we carried out a series of mineralogical, petrological and geochemical studies to investigate ore zones present in the Kusa ilmenite-magnetite deposit located within the boundaries of a similarly-named laminated gabbro
T. D. Bocharnikova, V. V. Kholodnov, Y. S. Shagalov   +2 more
doaj   +1 more source