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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. Formation of the End-on Bound Lanthanide Dinitrogen Complexes [(R 2 N) 3 Ln–N═N–Ln(NR 2 ) 3 ] 2– from Divalent [(R 2 N) 3 Ln] 1– Salts (R = SiMe 3 )

   https://doi.org/10.1021/jacs.0c01021  

   Ryan, Austin J. ; Balasubramani, Sree ganesh ; Ziller, Joseph W. ; Furche, Filipp ; Evans, William J. ( May 2020 , Journal of the American Chemical Society)

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3. Effect of R-site element on crystalline phase and thermal stability of Fe substituted Mn mullite-type oxides: R 2 (Mn 1−x Fe x ) 4 O 10−δ (R = Y, Sm or Bi; x = 0, 0.5, 1)

   https://doi.org/10.1039/C7RA09699B  

   Thampy, Sampreetha ; Ashburn, Nickolas ; Martin, Thomas J. ; Li, Chenzhe ; Zheng, Yongping ; Chan, Julia Y. ; Cho, Kyeongjae ; Hsu, Julia W. ( January 2018 , RSC Advances)

   Combining experimental and theoretical studies, we investigate the role of R-site (R = Y, Sm, Bi) element on the phase formation and thermal stability of R 2 (Mn 1−x Fe x ) 4 O 10−δ ( x = 0, 0.5, 1) mullite-type oxides. Our results show a distinct R-site dependent phase behavior for mullite-type oxides as Fe is substituted for Mn: 100% mullite-type phase was formed in (Y, Sm, Bi) 2 Mn 4 O 10 ; 55% and 18% of (Y, Sm) 2 Mn 2 Fe 2 O 10−δ was found when R = Y and Sm, respectively, for equal Fe and Mn molar concentrations in the reactants, whereas Bi formed 54% O10- and 42% O9-mixed mullite-type phases. Furthermore, when the reactants contain 100% Fe, no mullite-type phase was formed for R = Y and Sm, but a sub-group transition to Bi 2 Fe 4 O 9 O9-phase was found for R = Bi. Thermogravimetric analysis and density functional theory (DFT) calculation results show a decreasing thermal stability in O10-type structure with increasing Fe incorporation; for example, the decomposition temperature is 1142 K for Bi 2 Mn 2 Fe 2 O 10−δ vs. 1217 K for Bi 2 Mn 4 O 10 . On the other hand, Bi 2 Fe 4 O 9 O9-type structure is found to be thermally stable up to 1227 K. These findings are explained by electronic structure calculations: (1) as Fe concentration increases, Jahn–Teller distortion results in mid band-gap empty states from unstable Fe 4+ occupied octahedra, which is responsible for the decrease in O10 structure stability; (2) the directional sp orbital hybridization unique to Bi effectively stabilizes the mullite-type structure as Fe replaces Mn. 

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4. Experimental and DFT Studies of the Electron-Withdrawing Ability of Perfluoroalkyl (R F ) Groups: Electron Affinities of PAH(R F ) n Increase Significantly with Increasing R F Chain Length

   https://doi.org/10.1002/chem.201704868  

   San, Long K. ; Spisak, Sarah N. ; Dubceac, Cristina ; Deng, Shihu H ; Kuvychko, Igor V. ; Petrukhina, Marina A. ; Wang, Xue-Bin ; Popov, Alexey A. ; Strauss, Steven H. ; Boltalina, Olga V. ( January 2018 , Chemistry - A European Journal)
5. Dispersion forces play a role in (Me 2 IPr)Fe(NAd)R 2 (Ad = adamantyl; R = neo Pe, 1-nor) insertions and Fe–R bond dissociation enthalpies (BDEs)

   https://doi.org/10.1039/c7dt04145d  

   Cundari, Thomas R. ; Jacobs, Brian P. ; MacMillan, Samantha N. ; Wolczanski, Peter T. ( January 2018 , Dalton Transactions)

   The effects of dispersion on migratory insertion reactions and related iron–carbon bond dissociation energies pertaining to (Me 2 IPr)FeR 2 (R = neo Pe, 1-nor), and the conversion of (Me 2 IPr)Fe(NAd)R 2 to (Me 2 IPr)Fe{N(Ad}R)R are investigated via calculations and structural comparisons. Dispersion appears to be an underappreciated, major contributor to common structure and reactivity relationships. 

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