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   Adams, Richard D.; Kaushal, Meenal; Rassolov, Vitaly A.; Smith, Mark D. (August 2022, Inorganic Chemistry)
2. Synthesis, Structures, and Transformations of Bridging and Terminally-Coordinated Trimethylammonioalkenyl Ligands in Zwitterionic Pentaruthenium Carbido Carbonyl Complexes

   https://doi.org/10.1021/acs.inorgchem.0c03541  

   Adams, Richard D.; Akter, Humaiara; Kaushal, Meenal; Smith, Mark D.; Tedder, Jonathan D. (March 2021, Inorganic Chemistry)
3. Structure of copper(I) and silver(I) complexes with zwitterionic ligands derived from N-Heterocyclic Carbenes

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   Rungthanaphatsophon, Pokpong; Gremillion, Alexander J.; Wang, Yuzhong; Kelley, Steven P.; Robinson, Gregory H.; Walensky, Justin R. (January 2021, Inorganica Chimica Acta)
4. Terpene dispersion energy donor ligands in borane complexes

   https://doi.org/10.1039/d2cc04203g  

   Mears, Kristian L.; Kutzleb, Michelle A.; Stennett, Cary R.; Fettinger, James C.; Kaseman, Derrick C.; Yu, Ping; Vasko, Petra; Power, Philip P. (September 2022, Chemical Communications)

   Structural characterization of the complex [B(β-pinane) 3 ] (1) reveals non-covalent H⋯H contacts that are consistent with the generation of London dispersion energies involving the β-pinane ligand frameworks. The homolytic fragmentations of 1 , and camphane and sabinane analogues ([B(camphane) 3 ] (2) and [B(sabinane) 3 ] (3)) were studied computationally. Isodesmic exchange results showed that London dispersion interactions are highly dependent on the terpene's stereochemistry, with the β-pinane framework providing the greatest dispersion free energy (Δ G = −7.9 kcal mol −1 ) with Grimme's dispersion correction (D3BJ) employed. PMe 3 was used to coordinate to [B(β-pinane) 3 ], giving the complex [Me 3 P–B(β-pinane) 3 ] ( 4 ), which displayed a dynamic coordination equilibrium in solution. The association process was found to be slightly endergonic at 302 K (Δ G = +0.29 kcal mol −1 ). 

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5. π-Extended Ligands in Two-Coordinate Coinage Metal Complexes

   https://doi.org/10.1021/jacs.2c06948  

   Muniz, Collin N.; Schaab, Jonas; Razgoniaev, Anton; Djurovich, Peter I.; Thompson, Mark E. (October 2022, Journal of the American Chemical Society)

   Two-coordinate carbene-MI-amide (cMa, MI = Cu, Ag, Au) complexes have emerged as highly efficient luminescent materials for use in a variety of photonic applications, due to their extremely fast radiative rates via thermally activated delayed fluorescence (TADF) from an interligand charge transfer (ICT) process. A series of cMa derivatives were prepared to examine the variables which affect the radiative rate with the goal of understanding the parameters that control the radiative TADF process in these materials. We find that blue emissive complexes with high photoluminescence efficiency (PL > 0.95) and fast radiative rates (kr = 4 x 106 s-1) can be achieved by selectively extending the -system of the carbene and amide ligands. Of note is the role played by increasing the separation between the hole and electron in the ICT excited state. Analysis of temperature dependent luminescence data along with theoretical calculations indicate that the hole-electron separation alters the energy gap between the lowest energy singlet and triplet states (dE ST) while keeping the radiative rate for the singlet state unchanged. This interpretation provides guidelines for the design of new cMa derivatives with even faster radiative rates as well as those with slower radiative rates and thus extended excited state lifetimes. 

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