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A Multidimensional Approach to Carbodiphosphorane–Bismuth Coordination Chemistry: Cationization, Redox-Flexibility, and Stabilization of a Crystalline Bismuth Hydridoborate

https://doi.org/10.1021/acs.inorgchem.2c03337

Obi, Akachukwu D.; Dickie, Diane A.; Tiznado, William; Frenking, Gernot; Pan, Sudip; Gilliard, Robert J. (December 2022, Inorganic Chemistry)

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Aromaticity: Quo Vadis

https://doi.org/10.1039/D2SC04998H

Merino, Gabriel; Solà, Miquel; Fernández, Israel; Foroutan-Nejad, Cina; Lazzeretti, Paolo; Frenking, Gernot; Anderson, Harry L.; Sundholm, Dage; Cossío, Fernando P.; Petrukhina, Marina A.; et al (January 2023, Chemical Science)

Aromaticity is one of the most deeply rooted concepts in chemistry. But why, if two-thirds of existing compounds can be classified as aromatic, is there no consensus on what aromaticity is? σ−, π−, δ−, spherical, Möbius, or all-metal aromaticity… why are so many attributes needed to specify a property? Is aromaticity a dubious concept? This perspective aims to reflect where the aromaticity community is and where it is going.
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Isolation of Stable Borepin Radicals and Anions

https://doi.org/10.1002/anie.202202516

Hollister, Kimberly K.; Yang, Wenlong; Mondol, Ranajit; Wentz, Kelsie E.; Molino, Andrew; Kaur, Aishvaryadeep; Dickie, Diane A.; Frenking, Gernot; Pan, Sudip; Wilson, David J. D.; et al (April 2022, Angewandte Chemie International Edition)

Abstract Borepin, a 7‐membered boron‐containing heterocycle, has become an emerging molecular platform for the development of new materials and optoelectronics. While electron‐deficient borepins are well‐established, reduced electron‐rich species have remained elusive. Herein we report the first isolable, crystalline borepin radical (2 a,2 b) and anion (3 a,3 b) complexes, which have been synthesized by potassium graphite (KC₈) reduction of cyclic(alkyl)(amino) carbene‐dibenzo[b,d]borepin precursors. Borepin radicals and anions have been characterized by EPR or NMR, elemental analysis, X‐ray crystallography, and cyclic voltammetry. In addition, the bonding features have been investigated computationally using density functional theory.
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Consanguineous Families of Coordinated Carbon: A ReC ₄ Re Assembly That Is Isolable in Three Oxidation States, Including Crystallographically Characterized ReC⋮CC⋮CRe and ⁺ ReCCCCRe ⁺ Adducts and a Radical Cation in Which Charge Is Delocalized between Rhenium Termini

https://doi.org/10.1021/ja9631817

Brady, Monika; Weng, Weiqing; Zhou, Yuanlin; Seyler, Jeffery W.; Amoroso, Angelo J.; Arif, Atta M.; Böhme, Marlis; Frenking, Gernot; Gladysz, J. A. (January 1997, Journal of the American Chemical Society)

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