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1. Infrared Spectroscopy of Radical Cation Clusters (NH ₃ ) ₂ ⁺ and (NH ₃ ) ₃ ⁺

   https://doi.org/10.1021/acs.jpca.4c08362  

   Singh, Amandeep; Iguchi, Arisa; Bernaards, Tom C; Golpariani, Zane; Mizuse, Kenta; Fujii, Asuka; Tanuma, Hajime; Azuma, Toshiyuki; Kuma, Susumu; Vilesov, Andrey (March 2025, The Journal of Physical Chemistry A)
2. [Ga ³⁺ ₈ Sm ³⁺ ₂ , Ga ³⁺ ₈ Tb ³⁺ ₂ ] Metallacrowns are Highly Promising Ratiometric Luminescent Molecular Nanothermometers Operating at Physiologically Relevant Temperatures

   https://doi.org/10.1002/chem.202003239  

   Salerno, Elvin V.; Zeler, Justyna; Eliseeva, Svetlana V.; Hernández‐Rodríguez, Miguel A.; Carneiro Neto, Albano N.; Petoud, Stéphane; Pecoraro, Vincent L.; Carlos, Luís D. (September 2020, Chemistry – A European Journal)

   Abstract Nanothermometry is the study of temperature at the submicron scale with a broad range of potential applications, such as cellular studies or electronics. Molecular luminescent‐based nanothermometers offer a non‐contact means to record these temperatures with high spatial resolution and thermal sensitivity. A luminescent‐based molecular thermometer comprised of visible‐emitting Ga³⁺/Tb³⁺and Ga³⁺/Sm³⁺metallacrowns (MCs) achieved remarkable relative thermal sensitivity associated with very low temperature uncertainty ofS_r=1.9 % K⁻¹andδT<0.045 K, respectively, at 328 K, as an aqueous suspension of polystyrene nanobeads loaded with the corresponding MCs. To date, they are the ratiometric molecular nanothermometers offering the highest level of sensitivity in the physiologically relevant temperature range. 

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3. Lifetimes of Be ₃ ^2– and Mg ₃ ^2– Cluster Dianions

   https://doi.org/10.1021/acs.jpca.1c00770  

   Davis, Jeremy U.; Phung, Quan Manh; Yanai, Takeshi; Ehara, Masahiro; Sommerfeld, Thomas (May 2021, The Journal of Physical Chemistry A)
4. Al(OR ^F ) ₃ (R ^F = C(CF ₃ ) ₃ ) activated silica: a well-defined weakly coordinating surface anion

   https://doi.org/10.1039/C9SC05904K  

   Culver, Damien B.; Venkatesh, Amrit; Huynh, Winn; Rossini, Aaron J.; Conley, Matthew P. (February 2020, Chemical Science)

   Weakly Coordinating Anions (WCAs) containing electron deficient delocalized anionic fragments that are reasonably inert allow for the isolation of strong electrophiles. Perfluorinated borates, perfluorinated aluminum alkoxides, and halogenated carborane anions are a few families of WCAs that are commonly used in synthesis. Application of similar design strategies to oxide surfaces is challenging. This paper describes the reaction of Al(OR F ) 3 *PhF (R F = C(CF 3 ) 3 ) with silica partially dehydroxylated at 700 °C (SiO 2-700 ) to form the bridging silanol Si–OH⋯Al(OR F ) 3 ( 1 ). DFT calculations using small clusters to model 1 show that the gas phase acidity (GPA) of the bridging silanol is 43.2 kcal mol −1 lower than the GPA of H 2 SO 4 , but higher than the strongest carborane acids, suggesting that deprotonated 1 would be a WCA. Reactions of 1 with NOct 3 show that 1 forms weaker ion-pairs than classical WCAs, but stronger ion-pairs than carborane or borate anions. Though 1 forms stronger ion-pairs than these state-of-the-art WCAs, 1 reacts with alkylsilanes to form silylium type surface species. To the best of our knowledge, this is the first example of a silylium supported on derivatized silica. 

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5. Generation of a Ni ₃ Phosphinidene Cluster from the Ni(0) Synthon, Ni(η ³ -CPh ₃ ) ₂

   https://doi.org/10.1021/acs.organomet.0c00095  

   Touchton, Alexander J.; Wu, Guang; Hayton, Trevor W. (April 2020, Organometallics)