NSF PAR Search | NSF Public Access Repository

Note: When clicking on a Digital Object Identifier (DOI) number, you will be taken to an external site maintained by the publisher. Some full text articles may not yet be available without a charge during the embargo (administrative interval).
What is a DOI Number?

Some links on this page may take you to non-federal websites. Their policies may differ from this site.

Snapshot of cyclooctyne ring-opening to a tethered alkylidene cyclic polymer catalyst

https://doi.org/10.1039/D4SC04411H

Hurst, Javier M; Yadav, Rinku; Boeck, Parker T; Ghiviriga, Ion; Brantley, ChristiAnna L; Dobrzycki, Łukasz; Veige, Adam S (October 2024, Chemical Science)

Cyclooctyne reacts with the trianionic pincer ligand supported alkylidyne [^tBuOCO]WCC(CH₃)₃(THF)₂(1) to yield tungstacyclopropene (3) and tungstacyclopentadiene (4) complexes.
more » « less
Full Text Available
Probing tungsten-alkylidyne cyclic polymer initiator decomposition pathways with oxidants

https://doi.org/10.1016/j.poly.2024.116987

Yadav, Rinku; Brantley, ChristiAnna L; Ghiviriga, Ion; Abboud, Khalil A; Lester, Daniel W; Veige, Adam S (July 2024, Polyhedron)

An OCO-pincer supported tungsten(VI) alkylidyne exhibits diverse reactivity depending on the identity of the oxidizing agent and the stoichiometry of the reaction. Oxidation reactions are studied with azo, nitroso, and oxo compounds. Benzo(c)cinnoline facilitates migratory insertion of the alkylidyne carbon in the pincer backbone forming a tethered tungsten (VI) alkylidene complex. Analogous azobenzene activates a Csingle bondC bond in the tert—butyl group of the alkylidyne and results in a tungsten di-imido complex. Nitrosobenzene and pyridine N-oxide undergo oxygen atom transfer (OAT) reactions and result in tungsten oxo complexes. Reactions with nitrosobenzene are sensitive to stoichiometry; Csingle bondC bond activation is observed in stoichiometric reactions, while only OAT occurs with excess nitrosobenzene.
more » « less
Full Text Available
Mononuclear Four-Coordinate Bis-Fluoride Bis-NHC Complexes of Chromium(II), Iron(II), and Cobalt(II)

https://doi.org/10.1021/acs.inorgchem.3c02442

Acosta, Carlos M; Belov, Dmitry S; Lamur, Andy H; Brantley, ChristiAnna L; Solans-Monfort, Xavier; Rue, Kelly L; Christou, George; Bukhryakov, Konstantin V (November 2023, Inorganic Chemistry)

Full Text Available

Search for: All records