Results 21 to 30 of about 5,131 (236)
[1,4]Ditellurino[2,3-b:5,6-b′]dipyrazine
IUCrData, 2022 [1,4]Ditellurino[2,3-b:5,6-b′]dipyrazine represents the first reported [1,4]chalcogena[2,3-b:5,6-b′]dipyrazine containing a heavy chalcogens The asymmetric unit consists of three molecules. In contrast to its sulfur analog, which is planar [Lynch et al. (
Donna Franklin +3 more
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Molecules, 2018 The heavier chalcogens sulfur and selenium are important in organic and inorganic chemistry, and the role of such chalcogens in biological systems has recently gained more attention.
Sahar Nikoo +3 more
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The allylic chalcogen effect in olefin metathesis
Beilstein Journal of Organic Chemistry, 2010 Olefin metathesis has emerged as a powerful tool in organic synthesis. The activating effect of an allylic hydroxy group in metathesis has been known for more than 10 years, and many organic chemists have taken advantage of this positive influence for ...
Yuya A. Lin, Benjamin G. Davis
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Surface Enhanced Raman Scattering Revealed by Interfacial Charge-Transfer Transitions
The Innovation, 2020 Surface enhanced Raman scattering (SERS) is a fingerprint spectral technique whose performance is highly dependent on the physicochemical properties of the substrate materials.
Shan Cong +4 more
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Te-mediated electro-driven oxygen evolution reaction
Nano Research Energy, 2022 In the 21st century, the rapid development of human society has made people's demand for green energy more and more urgent. The high-energy-density hydrogen energy obtained by fully splitting water is not only environmentally friendly, but also is ...
Feng Gao +8 more
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Effective $n$-type Doping of Mg$_3$Sb$_2$ with Group-3 Elements
, 2018 The recent discovery of high thermoelectric performance in Mg$_3$Sb$_2$ has been critically enabled by the success in $n$-type doping of this material, which is achieved under Mg-rich growth conditions, typically with chalcogens (Se, Te) as extrinsic ...
Gorai, Prashun +2 more
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Supramolecular macrocycles reversibly assembled by Te…O chalcogen bonding
Nature Communications, 2016 Similarly to halogen bonding, the heavier chalcogens are capable of forming supramolecular links with electron rich sites. Here, the authors show that these forces can allow the formation of well-defined cyclic structures that are stable in solution and ...
Peter C. Ho +10 more
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Selection of isomerization pathways of multistep photoswitches by chalcogen bonding
Nature Communications, 2023 Multistep photoswitches are able to engage in different photoisomerization pathways and are challenging to control. Here we demonstrate a multistep sequence of E/Z isomerization and photocyclization/cycloreversion of photoswitches via manipulating the ...
Shuaipeng Jia +4 more
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1,2σ3λ3-Oxaphosphetanes and Their P-Chalcogenides—A Combined Experimental and Theoretical Study
Molecules, 2022 Although 1,2σ5λ5-oxaphosphetanes have been known for a long time, the “low-coordinate” 1,2σ3λ3-oxaphosphetanes have only been known since their first synthesis in 2018 via decomplexation.
Florian Gleim +4 more
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Superconductivity in the Chalcogens up to Multimegabar Pressures
, 2001 Highly sensitive magnetic susceptibility techniques were used to measure the superconducting transition temperatures in S up to 231($\pm$5) GPa. S transforms to a superconductor with T$_c$ of 10 K and has a discontinuity in T_c dependence at 160 GPa ...
Eremets, Mikhail I. +5 more
core +2 more sources