Results 51 to 60 of about 10,693 (226)

I2-Catalyzed/DMSO System for the Oxidation of Se-Se Bond Activated by the Use of SynLED Parallel Photoreactor®

open access: yesChemistry Proceedings, 2022
Among the different green oxidative protocols, I2-catalyzed/DMSO systems have recently received considerable attention due to being greener, efficient, atom-economical, low-cost, and offering the possibility to perform reactions under safe and mild ...
Gloria Pizzoli   +3 more
doaj   +1 more source

A Tight Binding Approach to Strain and Curvature in Monolayer Transition-Metal Dichalcogenides [PDF]

open access: yes, 2016
We present a model of the electronic properties of monolayer transition-metal dichalcogenides based on a tight binding approach which includes the effects of strain and curvature of the crystal lattice.
Burkard, Guido   +2 more
core   +2 more sources

The Balance between Hydrogen Bonds, Halogen Bonds, and Chalcogen Bonds in the Crystal Structures of a Series of 1,3,4-Chalcogenadiazoles

open access: yesMolecules, 2021
In order to explore how specific atom-to-atom replacements change the electrostatic potentials on 1,3,4-chalcogenadiazole derivatives, and to deliberately alter the balance between intermolecular interactions, four target molecules were synthesized and ...
Viraj De Silva   +3 more
doaj   +1 more source

Structural Features of Chalcogen Bonds and Weak Interactions Involving Chalcogens

open access: yes, 2023
The structural features of chalcogen bonding (ChB) interactions in linear fragments R–Ch⋯Nu (Ch = S, Se, Te; R = C, N, O, S, Se, Te; Nu = N, O, S, Se, Te, F, Cl, Br, I) involving Ch⋯Nu distances shorter than the sum of relevant van der Waals (vdW) radii are reviewed.
M. CARLA ARAGONI, Yury Turubaev
openaire   +2 more sources

Comparative Strengths of Tetrel, Pnicogen, Chalcogen, and Halogen Bonds and Contributing Factors

open access: yesMolecules, 2018
Ab initio calculations are employed to assess the relative strengths of various noncovalent bonds. Tetrel, pnicogen, chalcogen, and halogen atoms are represented by third-row atoms Ge, As, Se, and Br, respectively.
Wenbo Dong, Qingzhong Li, Steve Scheiner
doaj   +1 more source

Stereoselective Processes Based on σ-Hole Interactions

open access: yesMolecules, 2022
The σ-hole interaction represents a noncovalent interaction between atoms with σ-hole(s) on their surface (such as halogens and chalcogens) and negative sites.
Paola Peluso, Victor Mamane
doaj   +1 more source

Understanding the catalysis by bis-selenonium cations as bidentate chalcogen bond donors

open access: yesTetrahedron Chem, 2022
The mode of activation and catalysis of bidentate bis-selenonium cations have been computationally explored in detail by means of Density Functional Theory calculations.
Susana Portela, Israel Fernández
doaj   +1 more source

Atomic Layer Deposition in Transistors and Monolithic 3D Integration

open access: yesAdvanced Functional Materials, EarlyView.
Transistors are fundamental building blocks of modern electronics. This review summarizes recent progress in atomic layer deposition (ALD) for the synthesis of two‐dimensional (2D) metal oxides and transition‐metal dichalcogenides (TMDCs), with particular emphasis on their enabling role in monolithic three‐dimensional (M3D) integration for next ...
Yue Liu   +5 more
wiley   +1 more source

Thiosulfoxide (Sulfane) Sulfur: New Chemistry and New Regulatory Roles in Biology

open access: yesMolecules, 2014
The understanding of sulfur bonding is undergoing change. Old theories on hypervalency of sulfur and the nature of the chalcogen-chalcogen bond are now questioned.
John I. Toohey, Arthur J. L. Cooper
doaj   +1 more source

Photoemission studies of the near Fermi level spectral weight shifts in FeSe1-xTex superconductor

open access: yes, 2014
Our valence band photoelectron spectroscopic studies show a temperature dependent spectral weight transfer near the Fermi level in the Fe-based superconductor FeSe1-xTex.
Awana, V. P. S.   +4 more
core   +1 more source

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