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1. 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)
2. A Reassessment of the Chronostratigraphy of Late Miocene C 3 –C 4 Transitions

   https://doi.org/10.1029/2020PA003857  

   Tauxe, L. ; Feakins, S. J. ( July 2020 , Paleoceanography and Paleoclimatology)

   Combining magnetostratigraphic and carbon isotopic data for the late Miocene can provide a temporal framework for an isotopic shift first documented in soil carbonate nodules of northern Pakistan. The shift has been interpreted as a change in vegetation from trees and shrubs (using the C₃photosynthetic pathway) to grassland (using the C₄pathway). The cause of the event has been hotly debated and its timing is close to a shift in carbon isotopes in the marine realm. Further understanding depends critically on chronology. Unfortunately, temporal calibration of the various records published over decades relied on different time scales. To address the lack of a consistent chronology, we have reevaluated the constraints for the carbon isotopic shifts recorded from the Indian subcontinent. These show a diachronous transition ranging in age from about 7.8 Ma in Pakistan to as late at 6 Ma in Nepal. The record from IODP Expedition 355 Site U1457, drilled on the Indus fan shows that the transition in peninsular India began at about 7.2 Ma. Similar records from the African margin saw an earlier shift to C₄dominance starting around 10 Ma and those from Australia and South America transitioned later, during the Pliocene. The diachroneity around the globe does not invalidate pCO₂as a driver, but is consistent with it being one of several drivers of the global C₄expansion.

    

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3. 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)

   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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4. 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

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5. Photoionization of neutral magnesium and sodium anion in C 60 versus C 240

   https://doi.org/10.1088/1742-6596/1412/7/072039  

   Magrakvelidze, M ; Shields, D ; De, R ; Manson, S T ; Chakraborty, H S ( January 2020 , Journal of Physics: Conference Series)