Results 91 to 100 of about 7,785 (240)

Superconducting Vacancy-Ordered Rock-Salt NbO Films

open access: yesChemistry of Materials
12 pages, 7 ...
Jeong Rae Kim   +7 more
openaire   +2 more sources

New Insights into Poly(Dichlorophosphazene) Synthesis via Me3Si─N═PCl3 Polymerization: An Experimental and Theoretical Study

open access: yesChemistry – A European Journal, EarlyView.
Poly(dichlorophosphazene) synthesis via Me3Si─N═PCl3 polymerization was reinvestigated using quantum chemical calculations and experiments. A cationic initiator (Ph3PCl2) enables ambient‐temperature polymerization through chloride‐catalyzed cationic pathways involving dissociation, nucleophilic chloride attack, and chain‐propagating species formation ...
Cornelius Knuth   +6 more
wiley   +1 more source

Selective growth of NbO whisker.

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

Regioselective Aldol Reactions Directed by Charge and Orbital Effects in Cyclic Germyl Dienolates: Synthesis of Three Distinct Regio‐ and Stereoisomers

open access: yesChemistry – A European Journal, EarlyView.
Charge and orbital control represent fundamental principles in organic chemistry. In this study, these principles are applied to the aldol reactions of a cyclic Ge‐dienolate. By systematically tuning the charge and orbital distributions of the Ge‐dienolates and their aldehyde reaction partners, regio‐ and stereoselective access to three distinct aldol ...
Taishi Nojima   +2 more
wiley   +1 more source

Synthesis of Tris(indol‐3‐yl)methanes From Indoles, CO2, and Dimethylphenylsilane With BPh3: Two‐Step Construction of π‐Conjugated Systems

open access: yesChemistry – A European Journal, EarlyView.
Tris(indol‐3‐yl)methanes were synthesized from indoles, CO2, and PhMe2SiH in the presence of BPh3 in acetonitrile at 50°C. One product, tris(4‐bromo‐1‐methylindol‐3‐yl)methane, underwent a palladium‐catalyzed cascade reaction for the formation of a novel polycyclic heteroaromatic compound, where the methine C(sp3) atom originating from CO2 was ...
Sha Li   +5 more
wiley   +1 more source

From Charge‐Transfer Adducts to (Tri)Halide‐Templated Supramolecular Cages: Covalent vs Ionic Products in the Reactions of Pyridin‐4‐ylthio‐Substituted Tetrathiafulvalene With Dihalogens and Interhalogens

open access: yesChemistry – A European Journal, EarlyView.
The reactions between tetra(pyridin‐4‐ylthio)tetrathiafulvalene and Br2/I2/ICl/IBr led to a variety of products, including a rare example of neutral 1:4 CT adduct and ionic products showing supramolecular cage motifs at (tri)halide templates. The nature of the reaction products was elucidated based on XRD analysis, Raman spectroscopy and QTAIM, NCI ...
Anna Caria   +6 more
wiley   +1 more source

Advances in Design Strategy and Mechanism Insights for Alkaline Hydrogen Evolution Reaction: Multilevel Site Engineering and Structure–Activity Relationship

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This review is about material design based on engineering multilevel sites from theoretical calculation and synthetic routes to mechanism, structure–activity relationship, challenges and perspectives for boosting hydrogen production in alkaline electrolyte. Electrolytic water splitting is a clean, carbon‐free method for producing green hydrogen and has
Ke Zhang   +9 more
wiley   +1 more source

Dissecting the Electronic Factors Governing Phosphine Oxide Reduction With Silanes: A Computational Study

open access: yesEuropean Journal of Inorganic Chemistry, EarlyView.
Phosphine oxide reduction with silanes is governed by phosphine oxide distortion and silane interaction energies. In R3SiH silanes, NBO analysis reveals that n(O)→σ*(SiR) donation is distributed among several acceptor orbitals, whereas in Ph2RSiH silanes, small electronegative substituents directly bonded to silicon (RCl, OCN, OH) enhance the σ ...
Leonardo I. Lugo‐Fuentes   +4 more
wiley   +1 more source

Normobaric Oxygen Therapy for Scleral Ischemia or Melt

open access: yesJournal of Ophthalmic & Vision Research, 2012
Purpose: To investigate the efficacy of normobaric oxygen (NBO) therapy for treatment of scleral ischemia or melt. Methods: This prospective interventional case series includes 9 eyes of 8 patients with scleral ischemia or melt of diverse etiologies ...
Farideh Sharifipour   +4 more
doaj  

Truncation of Samroiyotmycin: Tailored seco‐Acids as Novel Antimalaria Compounds

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
Six truncated samroiyotmycin‐derived antimalarials were synthesized by replacing the tosyloxazole unit with electron‐deficient aryl groups. The most active seco‐acid with EWG = 2 × CF3 outperformed the natural product SamA. Its enhanced activity supports a donor–acceptor interaction involving the electron‐poor aryl unit, consistent with inhibition of ...
Anton Czuczkowski   +10 more
wiley   +1 more source

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