Constrained phosphine chalcogenide selenoethers supported by peri-substitution
Abstract
A series of phosphorus and selenium peri-substituted acenaphthene species with the phosphino group oxidized by O, S, and Se has been isolated and fully characterized, including by single-crystal X-ray diffraction. The P(V) and Se(II) systems showed fluxional behavior in solution due to the presence of two major rotamers, as evidenced with solution NMR spectroscopy. Using Variable-Temperature NMR (VT NMR) and supported by DFT (Density Functional Theory) calculations and solid-state NMR, the major rotamers in the solid and in solution were identified. All compounds showed a loss of the through-space JPSe coupling observed in the unoxidized P(III) and Se(II) systems due to the sequestration of the lone pair of the phosphine, which has been previously identified as the major contributor to the coupling pathway.
Citation
Tarcza , A E , Slawin , A M Z , Carpenter-Warren , C L , Buehl , M , Kilian , P & Chalmers , B A 2023 , ' Constrained phosphine chalcogenide selenoethers supported by peri -substitution ' , Molecules , vol. 28 , no. 21 , 7297 . https://doi.org/10.3390/molecules28217297
Publication
Molecules
Status
Peer reviewed
ISSN
1420-3049Type
Journal article
Rights
Copyright: © 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
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