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2.249 Aktuelle Fachpublikationen zum Thema temperature

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A Single-Component Conductor Based on a Radical Gold Dithiolene Complex with Alkyl-Substituted Thiophene-2,3-dithiolate Ligand

02.10.2015 | Toshiki Higashino; Olivier Jeannin; Tadashi Kawamoto; Dominique Lorcy; Takehiko Mori; Marc Fourmigué, Inorganic Chemistry, 2015

Alkyl-substituted thiophene-2,3-dithiolate ligands are prepared through a Thio-Claisen rearrangement of 4,5-bis(propargylthio)-1,3-dithiole-2-thione derivatives. The two novel dithiolate ligands, namely, 4,5-dimethyl-thiophene-2,3-dithiolate (α-Me2tpdt) and ...


Isolation and Crystal Structure of a Dithiophene Dication: Controlling Covalent Connection and Disconnction with Temperature and Phase

01.10.2015 | Xinping Wang; Ningning Yuan; Zaichao Zhang; Xingyong Wang, Chemical Communication, 2015

A dithienylethene (1o) undergoes a two-electron chemical oxidation to a singlet diradical as an open-isomer (1o2+) in solution, which cyclizes to a closed-form (1c2+) upon cooling. The latter crystallizes out and its structure is analyzed by single crystal X-ray diffraction. Equilibrium between ...


Atmospheric chemistry of (CF3)2C[double bond, length as m-dash]CH2: OH radicals, Cl atoms and O3 rate coefficients, oxidation end-products and IR spectra

01.10.2015 | Vassileios C. Papadimitriou; Christina S. Spitieri; Panos Papagiannakopoulos; Mathieu Cazaunau; Maria Lendar; Véroni ..., Physical Chemistry Chemical Physics, 2015

The rate coefficients for the gas phase reactions of OH radicals, k1, Cl atoms, k2, and O3, k3, with 3,3,3-trifluoro-2(trifluoromethyl)-1-propene ((CF3)2C [[double bond, length as m-dash]] CH2, hexafluoroisobutylene, HFIB) were determined at room temperature and atmospheric pressure employing the ...


Combustive, Postcombustive, and Tropospheric Butadiyne Oxidation by O2, Following Initial HO Attack. Theoretical Study

29.09.2015 | Andrea Maranzana; Giovanni Ghigo; Glauco Tonachini, Journal of Physical Chemistry A, 2015

Butadiyne (diacetylene, HC4H) is produced during combustions, and has been quantified in different flames as well as a biomass burning emission. Its reaction with the hydroxyl radical, HO(2Π3/2), under combustion conditions, was investigated in a thorough RRKM study by J. P. Senosiain, S. J. ...


Chromium speciation methods and infrared spectroscopy for studying the chemical reactivity of lead chromate-based pigments in oil medium

27.09.2015 | Author(s): Letizia Monico, Koen Janssens, Marine Cotte, Lorenzo Sorace, Frederik Vanmeert, Brunetto Giovan ..., Microchemical Journal, 2015

Publication date: January 2016 Source:Microchemical Journal, Volume 124 Author(s): Letizia Monico, Koen Janssens, Marine Cotte, Lorenzo Sorace, Frederik Vanmeert, Brunetto Giovanni Brunetti, Costanza Miliani Environmental factors, such as light, humidity and temperature are ...


Differential behaviors of tea catechins under thermal processing: Formation of non-enzymatic oligomers

27.09.2015 | Author(s): Fang-Yuan Fan, Meng Shi, Ying Nie, Yue Zhao, Jian-Hui Ye, Yue-Rong Liang, Food Chemistry, 2015

Publication date: 1 April 2016 Source:Food Chemistry, Volume 196 Author(s): Fang-Yuan Fan, Meng Shi, Ying Nie, Yue Zhao, Jian-Hui Ye, Yue-Rong Liang Tea catechins as a member of flavan-3-ols subclass with the same skeleton may behave differentially. This study investigated the ...


Supercritical water gasification of petrochemical wastewater for hydrogen production

25.09.2015 | Xie Runcheng, Liu Yi, Bu Tao, Yao Yong, Deng Kun, Yang Zhibin, Environmental Progress, 2015

Supercritical water gasification of petrochemical wastewater is a promising technology for clean petrochemical wastewater utilization. In this paper, hydrogen production by noncatalytic partial oxidation of petrochemical wastewater was systematically investigated in supercritical water with a ...


Preparation and Properties of Boron‐Based Nano‐B/NiO Thermite

25.09.2015 | Ting Liu, Xin Chen, Huixiang Xu, Aijun Han, Mingquan Ye, Gongpei Pan, Propellants, Explosives, Pyrotechnics, 2015

Abstract Boron particles have several major burning problems, such as incomplete combustion, poor ignitability, and a complex burning process in solid propellants. It is documented that the low ignitability and combustion efficiency of boron are caused by the oxidation of its surface. In order ...


Synthesis, Properties, and Enantiomerization Behavior of Axially Chiral Phenolic Derivatives of 8-(Naphth-1-yl)quinoline and Comparison to 7,7′-Dihydroxy-8,8′-biquinolyl and 1,1′-Bi-2-naphthol

25.09.2015 | Somdev Banerjee; Brian E. Riggs; Lev N. Zakharov; Paul R. Blakemore, Synthesis, 2015

SynthesisDOI: 10.1055/s-0035-1560640 An aza-analogue of 1,1′-bi-2-naphthol (BINOL, 3), 7-hydroxy-8-(2-hydroxynaphth-1-yl)quinoline (8-azaBINOL, 2), was prepared in 3 steps and 49% yield from N,N-diethyl O-(7-hydroxy-8-iodoquinolyl)carbamate via Suzuki coupling with 1-naphthylboronic acid ...


ChemInform Abstract: Arene Oxidation with Malonoyl Peroxides.

24.09.2015 | Andrei Dragan, Tomasz M. Kubczyk, Julian H. Rowley, Stephen Sproules, Nicholas C. O. Tomkinson, ChemInform, 2015

Abstract Malonoyl peroxide (II) is found to be an efficient reagent for the oxidation of arenes at room temperature or slightly elevated temperatures to furnish protected phenols.


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