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Title: Diboron-carbene complexes derived from a geminal dianion
Authors: Fan, Jun
Yang, Ming-Chung
Hooper, Thomas J. N.
Su, Ming-Der
So, Cheuk-Wai
Keywords: Science::Chemistry
Issue Date: 2021
Source: Fan, J., Yang, M., Hooper, T. J. N., Su, M. & So, C. (2021). Diboron-carbene complexes derived from a geminal dianion. Organometallics, 40(12), 1848-1853.
Project: RG121/17
Journal: Organometallics
Abstract: The reaction of the bis(thiophosphinoyl) geminal dianion [C(PPh2S)2]2- with B2Br4(SMe2)2 in toluene afforded the diboron-carbene complex [(SPh2P)2CB]2 (2). The lability of the boron-carbene bond was found in the reaction of the sterically hindered thiophosphinoyl iminophosphoranyl geminal dianion [C(PPh2NAr)(PPh2S)]2- (Ar = 2,6-iPr2C6H3) with B2Br4(SMe2)2 in toluene to form the diboron-carbene complex 4, where one boron center bonds with two methanediides, leading to an allyl anionic-like C═B←C2- electronic structure, while another boron center is stabilized by two imino substituents. Complex 4 underwent rearrangement via a 1,2-methanediide shift in toluene at 60 °C to give the diboron-carbene complex [(SPh2P)(ArNPh2P)CB]2 (5).
ISSN: 0276-7333
DOI: 10.1021/acs.organomet.1c00108
Schools: School of Physical and Mathematical Sciences 
Rights: © 2021 American Chemical Society. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SPMS Journal Articles

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