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855 Newest Publications about the topic bromine

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Combined LA-ICP-MS microanalysis of iodine, bromine and chlorine in fluid inclusions

30-May-2018 | Tobias Fusswinkel; Christopher Giehl; Oliver Beermann; Johan R. Fredriksson; Dieter Garbe-Schönberg; Lea Scholt ..., Journal of Analytical Atomic Spectrometry, 2018

Halogens are excellent tracers of hydrothermal fluid sources in sedimentary, magmatic, metamorphic and ore-forming environments. In situ LA-ICP-MS analysis of Cl and Br in single fluid inclusions has provided fundamentally new insight into the processes leading to the formation of economic ...

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The effects of bromine atoms on the photophysical and photochemical properties of 3-cinnamoylcoumarin derivatives

29-May-2018 | Zhiyuan Sun; Yu Wang; De-Cai Fang; Yuxia Zhao, New Journal of Chemistry, 2018

Eight coumarin derivatives (T1–T8) with or without modification using one or two bromine atoms were synthesized through the aldol condensation reaction. Their photophysical, photochemical and electrochemical properties were investigated. It was shown that the position and the number of bromine ...

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Lone Pair-[small pi] vs [sigma]-Hole-[small pi] Interactions in Bromine Head Containing Oxacalix[2]arene[2]triazines

29-May-2018 | Muhammad Moazzam Naseer; Antonio Bauza; Hazem Alnasar; Klaus Jurkschat; Antonio Frontera, CrystEngComm, 2018

Two new bromine head containing oxacalix[2]arene[2]triazines were designed and synthesized. Owing to the bromine head and complementary V-shaped cavity, the solid state structure of oxacalix[2]arene[2]triazine having N,N-dipropylamino substituents showed intriguing and unique 1D-supramolecular ...

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Negative 2D thermal expansion in the halogen bonded acetone bromine complex.

27-May-2018 | Richard Hywel Jones; Kevin Knight; William G. Marshall, CrystEngComm, 2018

The crystal structure of the complex formed between acetone and bromine has been determined between 14K and 200K. The structure exhibits negative 2D thermal expansion at low temperature and colossal thermal expansion in the perpendicular dimension. At low temperature the C=O bond is significantly ...

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Bromination and iodination of diphosphane dichalcogenides

26-May-2018 | Daniel Upmann; Peter G. Jones, Dalton Transactions, 2018

The diphosphane dichalcogenides dppmSe2, dppeSe2, diprpmSe2, diprpeSe2, dppmS2 and dppeS2, [dppm = bis(diphenylphosphano)methane, dppe = bis(diphenylphosphano)ethane, diprpm = bis(diisopropylphosphano)methane, diprpe = bis(diisopropylphosphano)ethane] have been treated with elemental bromine or ...

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Bromine-rich complexes of bismuth: experimental and theoretical studies

25-May-2018 | Sergey A. Adonin; Igor D. Gorokh; Alexander S. Novikov; Denis G. Samsonenko; Pavel E. Plyusnin; Maxim N. Sokolov; Vl ..., Dalton Transactions, 2018

Three novel polybromide complexes of bismuth(iii) – (2,6-MePyH)3[BiBr5(Br3)] (1), (H2bpp){[BiBr5](Br2)} (2) and (3-ClPyH)2{[BiBr5](Br2)} (3) – were synthesized. The results of an extended screening involving a set of organic cations resulting in the formation/non-formation of Bi(iii) polybromides ...

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Bromine adatom promoted C–H bond activation in terminal alkynes at room temperature on Ag(111)

24-May-2018 | Jing Liu; Qiwei Chen; Qilin He; Yajie Zhang; Xiangyu Fu; Yongfeng Wang; Dahui Zhao; Wei Chen; Guo Qin Xu; Kai Wu, Physical Chemistry Chemical Physics, 2018

The activation of C–H bonds in terminal alkynyl groups at room temperature was achieved in the reaction of 2,5-diethynyl-1,4-bis(4-bromophenylethynyl)benzene on Ag(111). Scanning tunneling microscopy studies showed the formation of organometallic species, whose stabilization was confirmed by ...

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Oxidation of p-toluic acid to terephthalic acid via a bromine-free process using nano manganese and manganese–copper mixed oxides

23-May-2018 | Mohamed A. Betiha; Nadia G. Kandile; Abdelfattah M. Badawi; Sanaa M. Solyman; Ahmed S. Afify, New Journal of Chemistry, 2018

The industrial process of terephthalic acid (TPA) production suffers from many environmental and economical drawbacks. Liquid-phase catalytic oxidation of alkylbenzene by oxygen is usually initiated by bromine in a corrosive acetic acid solvent. A recent catalytic system used environmentally ...

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3D charge and 2D phonon transports leading to high out-of-plane ZT in n-type SnSe crystals

18-May-2018 | Cheng Chang; Minghui Wu; Dongsheng He; Yanling Pei; Chao-Feng Wu; Xuefeng Wu; Hulei Yu; Fangyuan Zhu; Kedong Wang; Y ..., Science , 2018

Thermoelectric technology enables the harvest of waste heat and its direct conversion into electricity. The conversion efficiency is determined by the materials figure of merit ZT. Here we show a maximum ZT of ~2.8 ± 0.5 at 773 kelvin in n-type tin selenide (SnSe) crystals out of plane. The ...

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Preparation and characterization of high softening point and homogeneous isotropic pitches produced from distilled ethylene tar by a novel bromination method

15-Apr-2018 | Author(s): Chuan-zhang Ge, Zhen-long Sun, Hai-xiao Yang, Dong-hui Long, Wen-ming Qiao, Li-cheng Ling, New Carbon Materials, 2018

Publication date: February 2018 Source:New Carbon Materials, Volume 33, Issue 1 Author(s): Chuan-zhang Ge, Zhen-long Sun, Hai-xiao Yang, Dong-hui Long, Wen-ming Qiao, Li-cheng Ling Homogeneous isotropic pitches with high softening points were prepared from vacuum-distilled heavy ...

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