Results 131 to 140 of about 36,268 (249)

Periodic Influences on the Charge‐Transfer and Radical Ion Pair Formation in Pnictogen‐Based Frustrated Lewis Pairs

open access: yesChemistryEurope, Volume 4, Issue 5, May 2026.
Systematic pnictogen variation (P, As, Sb, Bi) in PnMes3–B(C6F5)3 Frustrated Lewis Pairs (FLPs) reveals how both the energy and intensity of charge–transfer excitation can be tuned. Increasing pnictogen–boron orbital overlap and dispersion enhances oscillator strength and encounters complex stability, enabling higher radical ion pair concentrations ...
Lars J. C. van der Zee   +8 more
wiley   +1 more source

Bridged Pyrroloindole‐CAYC‐Gold Complexes: Harnessing Weak Secondary Intramolecular Au···H−C(sp3) Interactions in Gold(I) Catalysis

open access: yesAngewandte Chemie, Volume 138, Issue 17, 20 April 2026.
We present a new class of electronically and sterically hindered N‐heterocyclic carbenes, referred to as bridged cyclic (amino)ylide carbene (bCAYC), where 9H‐pyrrolo[1,2‐a]indole acted as carbene core and diaryl sulfonium as ylide partner. Corresponding bCAYC‐Au(I) exhibits a weak secondary intramolecular Au···H−C(sp3) interaction as a secondary ...
Sourav Sekhar Bera   +6 more
wiley   +2 more sources

A Density Functional Theory Study of the Structural Preferences of Type B Heteropentalene Mesomeric Betaines and Their Non‐Aromatic Azacyclooctatetraene Isomers

open access: yesJournal of Heterocyclic Chemistry, Volume 63, Issue 5, Page 778-784, May 2026.
DFT has been used to rationalize the relative stabilities of the Type B heteropentalene mesomeric betaines (HMBs) and their azacyclooctatetraene isomers; the tetraaza and triaza HMBs are generally expected to be thermodynamically more stable than their azacyclooctatetraene isomers, whereas the converse is true for diaza systems.
Jake Bell   +2 more
wiley   +1 more source

Insights Into Bifenthrin Stereoisomers and Their Regulatory Implications

open access: yesChemistryOpen, Volume 15, Issue 5, May 2026.
Bifenthrin is a pyrethroid insecticide with two stereogenic centers, generating four stereoisomers with distinct physicochemical and electronic properties. A combined crystallographic and density functional theory study, supported by Hirshfeld surface, quantum theory of atoms in molecules, natural bond orbital, and reactivity descriptor analyses ...
Nayara C. M. Santos   +7 more
wiley   +1 more source

NiH‐Catalyzed Enantioconvergent α‐Alkenylation of Carbonyl Compounds via Markovnikov Alkyne Hydronickellation

open access: yesAngewandte Chemie, Volume 138, Issue 17, 20 April 2026.
A NiH‐catalyzed α‐alkenylation via Markovnikov hydronickellation of alkynes enables convenient access to α‐chrial β‐methylene carbonyl frameworks that are prevalent in biorelevant molecules. High regio‐ and enantioselectivities have been achieved with excellent functional group tolerance and applicability toward complex structures. The β‐methylene unit
Hyeontaek Nam   +3 more
wiley   +2 more sources

Low-gravity sloshing in rectangular tanks [PDF]

open access: yes
Low-gravity sloshing in rectangular ...
Dodge, F. T., Garza, L. R.
core   +1 more source

Casein as rare elicitor of food allergy dependent on augmentation factors ‐ A case report

open access: yes
JDDG: Journal der Deutschen Dermatologischen Gesellschaft, EarlyView.
Charlotte Jasmin Kiani   +5 more
wiley   +1 more source

Partial Sigma Covalent Bonding in Transition Metals

open access: yesJournal of Computational Chemistry, Volume 47, Issue 11, 30 April 2026.
This study demonstrates partial σ‐covalent bonding is a general electronic phenomenon spanning main‐group biradicals and d8–d8 transition‐metal systems (Co, Rh, Ir). The analyses in this study reveal that ligand field (Dimen and Lantern organic frameworks) and orbital symmetry govern metal–metal interactions, with different bonding expressions ...
Lam H. Nguyen, Thanh N. Truong
wiley   +1 more source

Enhancing Blood–Brain Barrier Integrity in Patients With Acute Ischemic Stroke Via Normobaric Hyperoxia

open access: yesJournal of the American Heart Association: Cardiovascular and Cerebrovascular Disease
BACKGROUND Recent advancements in animal studies have demonstrated the potential of normobaric hyperoxia (NBO) as a promising intervention for preserving the integrity of the blood–brain barrier (BBB). However, there is still limited understanding of the
Weili Li   +8 more
doaj   +1 more source

Selective growth of NbO whisker.

open access: yesJournal of the Ceramic Association, Japan, 1975
Seiji MOTOJIMA   +2 more
openaire   +2 more sources

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