Dimerization and ring-opening in bis(diisopropylamino)cyclopropenylidene (BAC) mediated by [U(NR2)3(CCPh)] (R = SiMe3)

Thien H. Nguyen; Christophe Pauly; Greggory T. Kent; Guang Wu; Trevor W. Hayton

doi:10.1039/D3DT02741D

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Dimerization and ring-opening in bis(diisopropylamino)cyclopropenylidene (BAC) mediated by [U(NR₂)₃(CCPh)] (R = SiMe₃)†

Thien H. Nguyen,

^a Christophe Pauly,^a Greggory T. Kent,^a Guang Wu^a and Trevor W. Hayton

*^a

Author affiliations

* Corresponding authors

^a Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, CA 93106, USA
E-mail: hayton@chem.ucsb.edu

Abstract

Addition of 2 equiv. of bis(diisopropylamino)cyclopropenylidene (BAC) to [U(NR₂)₃(CCPh)] (1, R = SiMe₃), in Et₂O, results in formation of [cyclo-N(ⁱPr)C(Me)₂CH(NⁱPr₂)C{ [double bond, length as m-dash] CHC₃(NⁱPr₂)₂}][U(NR₂)₂(N(SiMe₃)SiMe₂CH₂)(CCPh)] (2) in moderate isolated yield. Complex 2 is the result of coupling and protonation of two BAC molecules, where complex 1 contributes the required proton. It was characterized by NMR spectroscopy and X-ray crystallography and represents a new mode of reactivity of the cyclopropenylidene fragment.

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DOI: https://doi.org/10.1039/D3DT02741D
Article type: Communication
Submitted: 22 Aug 2023
Accepted: 18 Sep 2023
First published: 19 Sep 2023

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Dalton Trans., 2023,52, 13868-13871

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Dimerization and ring-opening in bis(diisopropylamino)cyclopropenylidene (BAC) mediated by [U(NR₂)₃(CCPh)] (R = SiMe₃)

T. H. Nguyen, C. Pauly, G. T. Kent, G. Wu and T. W. Hayton, Dalton Trans., 2023, 52, 13868 DOI: 10.1039/D3DT02741D

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