Results 31 to 40 of about 148,467 (378)

Gas emission strength and evolution of the molar ratio of BrO/SO2 in the plume of Nyiragongo in comparison to Etna [PDF]

open access: yes, 2015
Airborne and ground-based differential optical absorption spectroscopy observations have been carried out at the volcano Nyiragongo (Democratic Republic of Congo) to measure SO2 and bromine monoxide (BrO) in the plume in March 2004 and June 2007 ...
Aiuppa   +73 more
core   +1 more source

The first mononuclear PtIII complex. Molecular structures of (NBu4)[PtIII(C6Cl5)4] and of its parent compound {NBu4}2[PtII(C6Cl5)4]·2CH2Cl2 [PDF]

open access: yes, 1984
(NBu4)[PtIII(C6Cl5)4], fully characterized by crystallographic, spectral, and magnetic measurements has been isolated by oxidation with halogens or TICl3 of the parent compound (NBu4)2[PtII(C6CL5)4], which has also been analysed by X-ray ...
Bau, Robert   +5 more
core   +1 more source

Ions at the air-water interface: An end to one hundred year old mystery? [PDF]

open access: yes, 2009
Availability of highly reactive halogen ions at the surface of aerosols has tremendous implications for the atmospheric chemistry. Yet neither simulations, experiments, nor existing theories are able to provide a fully consistent description of the ...
Diehl, Alexandre   +2 more
core   +2 more sources

Halogen⋯halogen contra C–H⋯halogen interactions

open access: yesCrystEngComm, 2014
Pressure affects the competition between C–H⋯X hydrogen bonds and X⋯X halogen⋯halogen interactions. In bromomethane, CH3Br, pressure changes the molecular arrangement of the two solid-state phases of this compound: low-pressure phase α is dominated by halogen⋯halogen interactions, whereas above 1.5 GPa the β phase is governed by C–H⋯halogen bonds.
Marcin Podsiadło   +2 more
openaire   +2 more sources

Halogen (Cl, F) release during explosive, effusive, and intrusive phases of the 2011 rhyolitic eruption at Cordón Caulle volcano (Chile)

open access: yesVolcanica, 2019
We investigate sulphur, chlorine and fluorine release during explosive, effusive and intrusive phases the 2011 Cordón Caulle eruption, with a focus on halogen devolatilization. Petrological analysis shows halogen release to have been promoted by isobaric
C Ian Schipper   +8 more
doaj   +1 more source

New Oxindole-Bridged Acceptors for Organic Sensitizers: Substitution and Performance Studies in Dye-Sensitized Solar Cells

open access: yesMolecules, 2020
New D-π-A configured organic sensitizers featuring halogen-substituted oxindole-bridged acceptor units have been synthesized for dye-sensitized solar cells applications.
Yogesh S. Tingare   +5 more
doaj   +1 more source

Direct C2–H alkylation of indoles driven by the photochemical activity of halogen-bonded complexes

open access: yesBeilstein Journal of Organic Chemistry, 2023
A light-driven metal-free protocol for the synthesis of sulfone-containing indoles under mild conditions is reported. Specifically, the process is driven by the photochemical activity of halogen-bonded complexes formed upon complexation of a sacrificial ...
Martina Mamone   +4 more
doaj   +1 more source

Rethinking reactive halogen budgets in the midlatitude lower stratosphere [PDF]

open access: yes, 1999
Current stratospheric models have difficulties in fully explaining the observed midlatitude ozone depletion in the lowermost stratosphere, particularly near the tropopause.
Atlas, EL   +5 more
core   +1 more source

Adsorption of diatomic halogen molecules on graphene: A van der Waals density functional study [PDF]

open access: yes, 2010
The adsorption of fluorine, chlorine, bromine, and iodine diatomic molecules on graphene has been investigated using density functional theory with taking into account nonlocal correlation effects by means of vdW-DF approach. It is shown that the van der
Katsnelson, M. I.   +3 more
core   +2 more sources

Stable bromine isotopic composition of atmospheric CH3Br

open access: yesTellus: Series B, Chemical and Physical Meteorology, 2013
Tropospheric methyl bromide (CH3Br) is the largest source of bromine to the stratosphere and plays an important role in ozone depletion. Here, the first stable bromine isotope composition (%26dgr%3B81Br) of atmospheric CH3Br is presented.
Axel Horst   +5 more
doaj   +1 more source

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