Results 31 to 40 of about 10,693 (226)

Enantioseparation of 5,5′-Dibromo-2,2′-dichloro-3-selanyl-4,4′-bipyridines on Polysaccharide-Based Chiral Stationary Phases: Exploring Chalcogen Bonds in Liquid-Phase Chromatography

open access: yesMolecules, 2021
The chalcogen bond (ChB) is a noncovalent interaction based on electrophilic features of regions of electron charge density depletion (σ-holes) located on bound atoms of group VI.
Paola Peluso   +10 more
doaj   +1 more source

Molecular Tuning of the Magnetic Response in Organic Semiconductors [PDF]

open access: yes, 2017
The tunability of high-mobility organic semi-conductors (OSCs) holds great promise for molecular spintronics. In this study, we show this extreme variability - and therefore potential tunability - of the molecular gyromagnetic coupling ("g-") tensor with
Babak, Vladimir   +6 more
core   +3 more sources

Chalcogen Bond versus Weak Hydrogen Bond: Changing Contributions in Determining the Crystal Packing of [1,2,5]-Chalcogenadiazole-Fused Tetracyanonaphthoquinodimethanes

open access: yesOrganic Materials, 2021
The crystal structures of a series of tetracyanonaphthoquinodimethanes fused with a selenadiazole or thiadiazole ring revealed that their molecular packing is determined mainly by two intermolecular interactions: chalcogen bond (ChB) and weak hydrogen ...
Yusuke Ishigaki   +5 more
doaj   +1 more source

Local motifs in GeS$_2$-Ga$_2$S$_3$ glasses [PDF]

open access: yes, 2016
The structure of (GeS$_2$)$_{0.75}$(Ga$_2$S$_3$)$_{0.25}$ and (GeS$_2$)$_{0.83}$(Ga$_2$S$_3$)$_{0.17}$ glasses was investigated by Raman scattering, high energy X-ray diffraction and extended X-ray absorption fine structure (EXAFS) measurements at the Ga
Belin, Stéphanie   +6 more
core   +4 more sources

Chalcogen–chalcogen secondary bonding interactions in trichalcogenaferrocenophanes

open access: yesCrystEngComm, 2016
The solid-state structures of all members in the series of trichalcogenaferrocenophanes [FeIJC5H4E)2E′] (E, E′ = S, Se, Te) (1–9) have been explored to understand the trends in secondary bonding interactions (SBIs) between chalcogen elements sulfur, selenium, and tellurium.
Karjalainen, Minna M.   +4 more
openaire   +3 more sources

The Origin of Chalcogen-Bonding Interactions [PDF]

open access: yesJournal of the American Chemical Society, 2017
Favorable molecular interactions between group 16 elements have been implicated in catalysis, biological processes, and materials and medicinal chemistry. Such interactions have since become known as chalcogen bonds by analogy to hydrogen and halogen bonds. Although the prevalence and applications of chalcogen-bonding interactions continues to develop,
Dominic J. Pascoe   +2 more
openaire   +3 more sources

Chalcogen Bonds Involving Selenium in Protein Structures [PDF]

open access: yesACS Chemical Biology, 2021
Chalcogen bonds are the specific interactions involving group 16 elements as electrophilic sites. The role of chalcogen atoms as sticky sites in biomolecules is underappreciated, and the few available studies have mostly focused on S. Here, we carried out a statistical analysis over 3562 protein structures in the Protein Data Bank (PDB) containing 18 ...
Carugo O., Resnati G., Metrangolo P.
openaire   +4 more sources

Bond orders for intermolecular interactions in crystals: charge transfer, ionicity and the effect on intramolecular bonds

open access: yesIUCrJ, 2018
The question of whether intermolecular interactions in crystals originate from localized atom...atom interactions or as a result of holistic molecule...molecule close packing is a matter of continuing debate.
Khidhir Alhameedi   +3 more
doaj   +1 more source

Hybrid chalcogen bonds in prodrug nanoassemblies provides dual redox-responsivity in the tumor microenvironment

open access: yesNature Communications, 2022
While homodimeric prodrug assemblies can improve drug loading and limit toxicity in cancer therapy, bioactivation within the target site is limited. Here, the authors introduce a hybrid chalcogen bond linker to a docetaxel dimeric prodrug nanoassembly ...
Tian Liu   +14 more
doaj   +1 more source

Noncovalent Bonds through Sigma and Pi-Hole Located on the Same Molecule. Guiding Principles and Comparisons

open access: yesMolecules, 2021
Over the last years, scientific interest in noncovalent interactions based on the presence of electron-depleted regions called σ-holes or π-holes has markedly accelerated.
Wiktor Zierkiewicz   +2 more
doaj   +1 more source

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