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1. Air-Stable Thermoluminescent Carbodicarbene-Borafluorenium Ions

   https://doi.org/10.1021/jacs.1c11861  

   Hollister, Kimberly K.; Molino, Andrew; Breiner, Grace; Walley, Jacob E.; Wentz, Kelsie E.; Conley, Ashley M.; Dickie, Diane A.; Wilson, David J.; Gilliard, Robert J. (January 2022, Journal of the American Chemical Society)
2. Organometallic Uranyl Complexes Featuring a Carbodicarbene Ligand

   https://doi.org/10.1021/acs.organomet.9b00860  

   Maity, Arnab K.; Ward, Robert J.; Rupasinghe, D. M.; Zeller, Matthias; Walensky, Justin R.; Bart, Suzanne C. (March 2020, Organometallics)
3. Chiral Pincer Carbodicarbene Ligands for Enantioselective Rhodium-Catalyzed Hydroarylation of Terminal and Internal 1,3-Dienes with Indoles

   https://doi.org/10.1021/jacs.7b08575  

   Marcum, Justin S.; Roberts, Courtney C.; Manan, Rajith S.; Cervarich, Tia N.; Meek, Simon J. (October 2017, Journal of the American Chemical Society)
4. Carbodicarbene‐Stibenium Ion‐Mediated Functionalization of C(sp ³ )−H and C(sp)−H Bonds

   https://doi.org/10.1002/anie.202415070  

   Warring, Levi; Westendorff, Karl_S; Bennett, Marc_T; Nam, Kijeong; Stewart, Brennan_M; Dickie, Diane_A; Paolucci, Christopher; Gunnoe, T_Brent; Gilliard, Jr., Robert_J (November 2024, Angewandte Chemie International Edition)

   Abstract Main‐group element‐mediated C−H activation remains experimentally challenging and the development of clear concepts and design principles has been limited by the increased reactivity of relevant complexes, especially for the heavier elements. Herein, we report that the stibenium ion [(^pyCDC)Sb][NTf₂]₃(1) (^pyCDC=bis‐pyridyl carbodicarbene; NTf₂=bis(trifluoromethanesulfonyl)imide) reacts with acetonitrile in the presence of the base 2,6‐di‐tert‐butylpyridine to enable C(sp³)−H bond breaking to generate the stiba‐methylene nitrile complex [(^pyCDC)Sb(CH₂CN)][NTf₂]₂(2). Kinetic analyses were performed to elucidate the rate dependence for all the substrates involved in the reaction. Computational studies suggest that C−H activation proceeds via a mechanism in which acetonitrile first coordinates to the Sb center through the nitrogen atom in a κ¹fashion, thereby weakening the C−H bond which can then be deprotonated by base in solution. Further, we show that1reacts with terminal alkynes in the presence of 2,6‐di‐tert‐butylpyridine to enable C(sp)−H bond breaking to form stiba‐alkynyl adducts of the type [(^pyCDC)Sb(CCR)][NTf₂]₂(3 a–f). Compound1shows excellent specificity for the activation of the terminal C(sp)−H bond even across alkynes with diverse functionality. The resulting stiba‐methylene nitrile and stiba‐alkynyl adducts react with elemental iodine (I₂) to produce iodoacetonitrile and iodoalkynes, while regenerating an Sb trication. 

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