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1. Metal–Metal Bond Umpolung in Heterometallic Extended Metal Atom Chains

   https://doi.org/10.1021/acs.inorgchem.2c02118  

   Wheaton, Amelia M. ; Chipman, Jill A. ; Roy, Michael D. ; Berry, John. F. ( September 2022 , Inorganic Chemistry)
2. Bond Energies of Adsorbed Intermediates to Metal Surfaces: Correlation with Hydrogen–Ligand and Hydrogen–Surface Bond Energies and Electronegativities

   https://doi.org/10.1002/anie.201811225  

   Carey, Spencer J. ; Zhao, Wei ; Campbell, Charles T. ( November 2018 , Angewandte Chemie International Edition)

   Understanding what controls the strength of bonding of adsorbed intermediates to transition‐metal surfaces is of central importance in many technologies, especially catalysis and electrocatalysis. Our recently measured bond enthalpies of −OH, −OCH₃, −O(O)CH and −CH₃to Pt(111) and Ni(111) surfaces are fit well (standard deviation of 7.2 kJ mol⁻¹) by a predictive equation involving only known parameters (gas‐phase ligand–hydrogen bond enthalpies, bond enthalpies of adsorbed H atoms to that surface, electronegativities of the elements, and group electronegativities of the ligands). This equation is based upon Pauling's equation, with improvements introduced by Matcha, derived here following manipulations of Matcha's equation similar to (but going beyond) those introduced by Schock and Marks to explain ligand–metal bond enthalpy trends in organometallic complexes.

    

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3. Bond Energies of Adsorbed Intermediates to Metal Surfaces: Correlation with Hydrogen–Ligand and Hydrogen–Surface Bond Energies and Electronegativities

   https://doi.org/10.1002/ange.201811225  

   Carey, Spencer J. ; Zhao, Wei ; Campbell, Charles T. ( November 2018 , Angewandte Chemie)

   Understanding what controls the strength of bonding of adsorbed intermediates to transition‐metal surfaces is of central importance in many technologies, especially catalysis and electrocatalysis. Our recently measured bond enthalpies of −OH, −OCH₃, −O(O)CH and −CH₃to Pt(111) and Ni(111) surfaces are fit well (standard deviation of 7.2 kJ mol⁻¹) by a predictive equation involving only known parameters (gas‐phase ligand–hydrogen bond enthalpies, bond enthalpies of adsorbed H atoms to that surface, electronegativities of the elements, and group electronegativities of the ligands). This equation is based upon Pauling's equation, with improvements introduced by Matcha, derived here following manipulations of Matcha's equation similar to (but going beyond) those introduced by Schock and Marks to explain ligand–metal bond enthalpy trends in organometallic complexes.

    

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4. Metal-Mediated, Autolytic Amide Bond Cleavage: A Strategy for the Selective, Metal Complexation-Catalyzed, Controlled Release of Metallodrugs

   https://doi.org/10.1021/jacs.3c05492  

   Śmiłowicz, Dariusz ; Eisenberg, Shawn ; LaForest, Rochelle ; Whetter, Jennifer ; Hariharan, Annapoorani ; Bordenca, Jake ; Johnson, Christopher J. ; Boros, Eszter ( July 2023 , Journal of the American Chemical Society)
5. Lantern‐Type Divanadium Complexes with Bridging Ligands: Short Metal−Metal Bonds with High Multiple Bond Orders

   https://doi.org/10.1002/cphc.202100121  

   Langstieh, Derek R. ; Lyngdoh, Richard H. Duncan ; King, R. Bruce ; Schaefer, Henry F. ( August 2021 , ChemPhysChem)

   Vanadium forms binuclear complexes with a variety of ligands often containing V≡V triple bonds. Many tetragonal divanadium paddlewheel complexes with bridging bidentate ligands have been experimentally characterized. This research exhaustively treats model tetragonal, trigonal, and digonal paddlewheel‐type divanadium complexes V₂L_x(L=formamidinate, guanidinate, and carboxylate;x=2, 3, 4), each in the three lowest‐energy spin states. The V−V formal bond orders are obtained from metal−metal MO diagrams for representative structures. A number of short V−V multiple bonds of order 3, 3.5, and 4 are found in these model complexes. The short V≡V triple bonds and singlet ground state predicted here for the model tetragonal complexes correspond well with the limited experimental results for the series of known tetragonal paddlewheels. Digonal divanadium lanterns with very short V−V quadruple bonds are predicted as interesting synthetic targets. The V−V bond distances are categorized into distinct ranges according to the formal bond order values from 0.5 to 4. These bond length ranges are compared with the ranges compiled for other divanadium complexes including carbonyl complexes.

    

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