Isolation of an Arsenic Diradicaloid with a Cyclic C2As2-Core

Steffenfauseweh H, Vishnevskiy Y, Neumann B, Stammler H-G, Andrada DM, Ghadwal R (2022)
Angewandte Chemie International Edition.

Zeitschriftenaufsatz | E-Veröff. vor dem Druck | Englisch
 
Download
Es wurden keine Dateien hochgeladen. Nur Publikationsnachweis!
Autor*in
Abstract / Bemerkung
Herein, we report on the synthesis, characterization, and reactivity studies of the first cyclic C 2 As 2 -diradicaloid {(IPr)CAs} 2 ( 6 ) (IPr = C{N(Dipp)CH} 2 ; Dipp = 2,6- i Pr 2 C 6 H 3 ). Treatment of (IPr)CH 2 ( 1 ) with AsCl 3 affords the Lewis adduct {(IPr)CH 2 }AsCl 3 ( 2 ). Compound 2 undergoes stepwise dehydrochlorination to yield {(IPr)CH}AsCl 2 ( 3 ) and {(IPr)CAsCl} 2 ( 5a ) or [{(IPr)CAs} 2 Cl]OTf ( 5b ). Reduction of 5a (or 5b ) with magnesium turnings gives 6 as a red crystalline solid in 90% yield. Compound 6 featuring a planar C 2 As 2 ring is diamagnetic and exhibits well resolved NMR signals. DFT calculations reveal a singlet ground state for 6 with a small singlet-triplet energy gap of 8.7 kcal/mol. The diradical character of 6 amounts to 20% (CASSCF, complete active space self consistent field) and 28% (DFT). Treatments of 6 with (PhSe) 2 and Fe 2 (CO) 9 give rise to {(IPr)CAs(SePh)} 2 ( 7 ) and {(IPr)CAs} 2 Fe(CO) 4 ( 8 ), respectively. © 2022 Wiley-VCH GmbH.
Erscheinungsjahr
2022
Zeitschriftentitel
Angewandte Chemie International Edition
eISSN
1521-3773
Page URI
https://pub.uni-bielefeld.de/record/2963685

Zitieren

Steffenfauseweh H, Vishnevskiy Y, Neumann B, Stammler H-G, Andrada DM, Ghadwal R. Isolation of an Arsenic Diradicaloid with a Cyclic C2As2-Core. Angewandte Chemie International Edition. 2022.
Steffenfauseweh, H., Vishnevskiy, Y., Neumann, B., Stammler, H. - G., Andrada, D. M., & Ghadwal, R. (2022). Isolation of an Arsenic Diradicaloid with a Cyclic C2As2-Core. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.202207415
Steffenfauseweh, H., Vishnevskiy, Y., Neumann, B., Stammler, H. - G., Andrada, D. M., and Ghadwal, R. (2022). Isolation of an Arsenic Diradicaloid with a Cyclic C2As2-Core. Angewandte Chemie International Edition.
Steffenfauseweh, H., et al., 2022. Isolation of an Arsenic Diradicaloid with a Cyclic C2As2-Core. Angewandte Chemie International Edition.
H. Steffenfauseweh, et al., “Isolation of an Arsenic Diradicaloid with a Cyclic C2As2-Core”, Angewandte Chemie International Edition, 2022.
Steffenfauseweh, H., Vishnevskiy, Y., Neumann, B., Stammler, H.-G., Andrada, D.M., Ghadwal, R.: Isolation of an Arsenic Diradicaloid with a Cyclic C2As2-Core. Angewandte Chemie International Edition. (2022).
Steffenfauseweh, Henric, Vishnevskiy, Yury, Neumann, Beate, Stammler, Hans-Georg, Andrada, Diego M, and Ghadwal, Rajendra. “Isolation of an Arsenic Diradicaloid with a Cyclic C2As2-Core”. Angewandte Chemie International Edition (2022).

Export

Markieren/ Markierung löschen
Markierte Publikationen

Open Data PUB

Web of Science

Dieser Datensatz im Web of Science®

Quellen

PMID: 35652361
PubMed | Europe PMC

Suchen in

Google Scholar