Results 21 to 30 of about 1,488 (236)
The Nature of Strong Chalcogen Bonds Involving Chalcogen‐Containing Heterocycles
Angewandte Chemie International Edition, 2020 AbstractChalcogen bonds are σ hole interactions and have been used in recent years as an alternative to hydrogen bonds. In general, the electrostatic potential at the chalcogen atom and orbital delocalization effects are made responsible for the orientation of the chalcogen bond. Here, we were able to show by means of SAPT calculations that neither the
Gebhard Haberhauer, Rolf Gleiter
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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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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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Inorganic Chemistry, 2007 To understand the intermolecular interactions between chalcogen centers (O, S, Se, Te), quantum chemical calculations on model systems were carried out. These model systems were pairs of monomers of the composition (CH3)2X1 (X1 = O, S, Se, Te) as the donors and CH3X2Z (with X2 = O, S, Se, Te and Z = Me, CN) as the acceptors.
Bleiholder, Christian +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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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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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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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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Catalysis with Chalcogen Bonds
Angewandte Chemie International Edition, 2016 AbstractHerein, we introduce catalysts that operate with chalcogen bonds. Compared to conventional hydrogen bonds, chalcogen bonds are similar in strength but more directional and hydrophobic, thus ideal for precision catalysis in apolar solvents. For the transfer hydrogenation of quinolines and imines, rate enhancements well beyond a factor of 1000 ...
Sebastian Benz +4 more
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