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1. Raman spectral behavior of N 2 , CO 2 , and CH 4 in N 2 –CO 2 –CH 4 gas mixtures from 22°C to 200°C and 10 to 500 bars, with application to other gas mixtures

   https://doi.org/10.1002/jrs.6033  

   Sublett, Jr, D. Matthew ; Sendula, Eszter ; Lamadrid, Hector M. ; Steele‐MacInnis, Matthew ; Spiekermann, Georg ; Bodnar, Robert J. ( November 2020 , Journal of Raman Spectroscopy)

   The Raman spectral behavior of N₂, CO₂, and CH₄in ternary N₂–CO₂–CH₄mixtures was studied from 22°C to 200°C and 10 to 500 bars. The peak position of N₂in all mixtures is located at lower wavenumbers compared with pure N₂at the same pressure (P)–temperature (T) (PT) conditions. The Fermi diad splitting in CO₂is greater in the pure system than in the mixtures, and the Fermi diad splitting increases in the mixtures as CO₂concentration increases at constantPandT. The peak position of CH₄in the mixtures is shifted to higher wavenumbers compared with pure CH₄at the samePTconditions. However, the relationship between peak position and CH₄mole fraction is more complicated compared with the trends observed with N₂and CO₂. The relative order of the peak position isotherms of CH₄and N₂in the mixtures in pressure–peak position space mimics trends in the molar volume of the mixtures in pressure–molar volume space. Relationships between the direction of peak shift of individual components in the mixtures, the relative molar volumes of the mixtures, and the attraction and repulsion forces between molecules are developed. Additionally, the relationship between the peak position of N₂in ternary N₂–CO₂–CH₄mixtures with pressure is extended to other N₂‐bearing systems to assess similarities in the Raman spectral behavior of N₂in various systems.

    

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2. Syntheses, Structures, and Thermal Properties of Gyroscope-like Complexes Consisting of PtCl 2 Rotators Encased in Macrocyclic Dibridgehead Diphosphines P((CH 2 ) n ) 3 P with Extended Methylene Chains ( n = 20/22/30) and Isomers Thereof

   https://doi.org/10.1021/acs.organomet.8b00345  

   Kharel, Sugam ; Joshi, Hemant ; Bhuvanesh, Nattamai ; Gladysz, John A. ( September 2018 , Organometallics)
3. Platinum( ii ) alkyl complexes of chelating dibridgehead diphosphines P((CH 2 ) n ) 3 P ( n = 14, 18, 22); facile cis / trans isomerizations interconverting gyroscope and parachute like adducts

   https://doi.org/10.1039/D1DT02321G  

   Zhu, Yun ; Ehnbom, Andreas ; Fiedler, Tobias ; Shu, Yi ; Bhuvanesh, Nattamai ; Hall, Michael B. ; Gladysz, John A. ( September 2021 , Dalton Transactions)

   The gyroscope like dichloride complexes trans -Pt(Cl) 2 (P((CH 2 ) n ) 3 P) ( trans -2; n = c, 14; e, 18; g, 22) and MeLi (2 equiv.) react to yield the parachute like dimethyl complexes cis -Pt(Me) 2 (P((CH 2 ) n ) 3 P) ( cis -4c,e,g, 70–91%). HCl (1 equiv.) and cis -4c react to give cis -Pt(Cl)(Me)(P((CH 2 ) 14 ) 3 P) ( cis -5c, 83%), which upon stirring with silica gel or crystallization affords trans -5c (89%). Similar reactions of HCl and cis -4e,g give cis / trans -5e,g mixtures that upon stirring with silica gel yield trans -5e,g. A parallel sequence with trans -2c/EtLi gives cis -Pt(Et) 2 (P((CH 2 ) 14 ) 3 P) ( cis -6c, 85%) but subsequent reaction with HCl affords trans -Pt(Cl)(Et)(P((CH 2 ) 14 ) 3 P) ( trans -7c, 45%) directly. When previously reported cis -Pt(Ph) 2 (P((CH 2 ) 14 ) 3 P) is treated with HCl (1 equiv.), cis - and trans -Pt(Cl)(Ph)(P((CH 2 ) 14 ) 3 P) are isolated (44%, 29%), with the former converting to the latter at 100 °C. Reactions of trans -5c and LiBr or NaI afford the halide complexes trans -Pt(X)(Me)(P((CH 2 ) 14 ) 3 P) ( trans -9c, 88%; trans -10c, 87%). Thermolyses and DFT calculations that include acyclic model compounds establish trans > cis stabilities for all except the dialkyl complexes, for which energies can be closely spaced. The σ donor strengths of the non-phosphine ligands are assigned key roles in the trends. The crystal structures of cis -4c, trans -5c, trans -7c, and trans -10c are determined and analyzed together with the computed structures. 

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4. Luminescence and Scintillation of [Nb 2 O 2 F 9 ] 3– -Dimer-Containing Oxide–Fluorides: Cs 10 (Nb 2 O 2 F 9 ) 3 F, Cs 9.4 K 0.6 (Nb 2 O 2 F 9 ) 3 F, and Cs 10 (Nb 2 O 2 F 9 ) 3 Cl

   https://doi.org/10.1021/acs.inorgchem.1c03787  

   Ayer, Gyanendra B. ; Morrison, Gregory ; Smith, Mark D. ; Jacobsohn, Luiz G. ; zur Loye, Hans-Conrad ( February 2022 , Inorganic Chemistry)
5. Reactivity of Cyclopentadienyl Molybdenum Compounds towards Formic Acid: Structural Characterization of CpMo(PMe 3 )(CO) 2 H, CpMo(PMe 3 ) 2 (CO)H, [CpMo(μ-O)(μ-O 2 CH)] 2 , and [Cp*Mo(μ-O)(μ-O 2 CH)] 2

   https://doi.org/10.1021/acs.inorgchem.6b02606  

   Neary, Michelle C. ; Parkin, Gerard ( February 2017 , Inorganic Chemistry)