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1. Photocatalytic Ketyl Radical Initiated C _ketyl −C _sp2 /C _sp3 Coupling on ZnIn ₂ S ₄

   https://doi.org/10.1002/chem.202203785  

   Han, Chuang; Han, Guanqun; Habibur_Rahman, Md; Mannodi‐Kanakkithodi, Arun; Sun, Yujie (May 2023, Chemistry – A European Journal)

   Abstract Visible‐light‐driven C−C bond formation utilizing ketyl radical (C_ketyl) species has attracted increasing attention recently, as it provides a direct route for the synthesis of complex molecules. However, the most‐developed homogeneous photocatalytic systems for the generation and utilization of ketyl radicals usually entail noble metal‐based (e. g., Ru and Ir) photosensitizers, which suffer from not only high cost but also potential degradation and hence pose challenges in product separation and purification. In contrast, readily accessible, inexpensive, and recyclable semiconductors represent a class of attractive and alternative photocatalysts but remain much less explored for photocatalytic ketyl radical initiated C−C bond formation. This work demonstrates that a wide range of industrially important chemicals, including substituted chromanes and tertiary alcohols, can be produced on ZnIn₂S₄under visible light irradiation through intramolecular cyclization (C_ketyl−C_sp2) and intermolecular cross‐coupling (C_ketyl−C_sp3) reactions, respectively, using ketyl radicals. A suite of experimental studies aided by computational investigation were carried out to shed light on the mechanistic insights of these two types of ketyl radical initiated C−C coupling reactions on ZnIn₂S₄. 

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2. Synthesis and Oxidation of Dirhenium C ₄ , C ₆ , and C ₈ Complexes of the Formula (η ⁵ -C ₅ Me ₅ )Re(NO)(PR ₃ )(C⋮C) _n (R ₃ P)(ON)Re(η ⁵ -C ₅ Me ₅ ) (R = 4-C ₆ H ₄ R‘, c-C ₆ H ₁₁ ):  In Search of Dications and Radical Cations with Enhanced Stabilities ^†

   https://doi.org/10.1021/om000961m  

   Meyer, Wayne E.; Amoroso, Angelo J.; Horn, Clemens R.; Jaeger, Monika; Gladysz, J. A. (March 2001, Organometallics)
3. Isolation and Crystallographic Characterization of Two, Nonisolated Pentagon Endohedral Fullerenes: Ho ₃ N@ C ₂ (22010)‐C ₇₈ and Tb ₃ N@ C ₂ (22010)‐C ₇₈

   https://doi.org/10.1002/chem.201902559  

   Stevenson, Steven; Rothgeb, Amanda J.; Tepper, Katelyn R.; Duchamp, James; Dorn, Harry C.; Powers, Xian B.; Roy, Mrittika; Olmstead, Marilyn M.; Balch, Alan L. (August 2019, Chemistry – A European Journal)
4. Synthesis and Characterization of Non-Isolated-Pentagon-Rule Actinide Endohedral Metallofullerenes U@ C ₁ (17418)-C ₇₆ , U@ C ₁ (28324)-C ₈₀ , and Th@ C ₁ (28324)-C ₈₀ : Low-Symmetry Cage Selection Directed by a Tetravalent Ion

   https://doi.org/10.1021/jacs.8b10435  

   Cai, Wenting; Abella, Laura; Zhuang, Jiaxin; Zhang, Xingxing; Feng, Lai; Wang, Yaofeng; Morales-Martínez, Roser; Esper, Ronda; Boero, Mauro; Metta-Magaña, Alejandro; et al (December 2018, Journal of the American Chemical Society)
5. Shrinking diffraction “fringes” in positronium formation from C ₆₀ to C ₂₄₀

   https://doi.org/10.1088/1742-6596/1412/16/162004  

   Hervieux, P –A; Chakraborty, A R; Chakraborty, H S (January 2020, Journal of Physics: Conference Series)