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1. Millimeter/Submillimeter-wave Spectroscopy and the Semi-experimental Equilibrium ( r _e ^SE ) Structure of 1 H -1,2,4-Triazole ( c -C ₂ H ₃ N ₃ )

   https://doi.org/10.1021/acs.jpca.2c06038  

   Bunn, Hayley A.; Esselman, Brian J.; Franke, Peter R.; Kougias, Samuel M.; McMahon, Robert J.; Stanton, John F.; Widicus Weaver, Susanna L.; Woods, R. Claude (November 2022, The Journal of Physical Chemistry A)
2. Evaluating electrochemical accessibility of 4f ⁿ 5d ¹ and 4f ⁿ⁺¹ Ln( ii ) ions in (C ₅ H ₄ SiMe ₃ ) ₃ Ln and (C ₅ Me ₄ H) ₃ Ln complexes

   https://doi.org/10.1039/D1DT02427B  

   Trinh, Michael T.; Wedal, Justin C.; Evans, William J. (October 2021, Dalton Transactions)

   The reduction potentials (reported vs. Fc + /Fc) for a series of Cp′ 3 Ln complexes (Cp′ = C 5 H 4 SiMe 3 , Ln = lanthanide) were determined via electrochemistry in THF with [ n Bu 4 N][BPh 4 ] as the supporting electrolyte. The Ln( iii )/Ln( ii ) reduction potentials for Ln = Eu, Yb, Sm, and Tm (−1.07 to −2.83 V) follow the expected trend for stability of 4f 7 , 4f 14 , 4f 6 , and 4f 13 Ln( ii ) ions, respectively. The reduction potentials for Ln = Pr, Nd, Gd, Tb, Dy, Ho, Er, and Lu, that form 4f n 5d 1 Ln( ii ) ions ( n = 2–14), fall in a narrow range of −2.95 V to −3.14 V. Only cathodic events were observed for La and Ce at −3.36 V and −3.43 V, respectively. The reduction potentials of the Ln( ii ) compounds [K(2.2.2-cryptand)][Cp′ 3 Ln] (Ln = Pr, Sm, Eu) match those of the Cp′ 3 Ln complexes. The reduction potentials of nine (C 5 Me 4 H) 3 Ln complexes were also studied and found to be 0.05–0.24 V more negative than those of the Cp′ 3 Ln compounds. 

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3. Precise equilibrium structure of thiazole ( c -C ₃ H ₃ NS) from twenty-four isotopologues

   https://doi.org/10.1063/5.0057221  

   Esselman, Brian J.; Zdanovskaia, Maria A.; Owen, Andrew N.; Stanton, John F.; Woods, R. Claude; McMahon, Robert J. (August 2021, The Journal of Chemical Physics)

   null (Ed.)
4. The Missing Link of Sulfur Chemistry in TMC-1: The Detection of c -C ₃ H ₂ S from the GOTHAM Survey

   https://doi.org/10.3847/1538-4357/adb84c  

   Remijan, Anthony J; Changala, P Bryan; Xue, Ci; Yuan, Elsa_Q H; Duffy, Miya; Scolati, Haley N; Shingledecker, Christopher N; Speak, Thomas H; Cooke, Ilsa R; Loomis, Ryan; et al (March 2025, The Astrophysical Journal)

   Abstract We present the spectroscopic characterization of cyclopropenethione in the laboratory and detect it in space using the Green Bank Telescope Observations of TMC-1: Hunting Aromatic Molecules survey. The detection of this molecule—the missing link in understanding the C₃H₂S isomeric family in TMC-1—completes the detection of all three low-energy isomers of C₃H₂S, as both CH₂CCS and HCCCHS have been previously detected in this source. The total column density of this molecule (N_Tof $5.72_{-1.61}^{+2.65}\times 10^{10}$cm⁻²at an excitation temperature of $4.7_{-1.1}^{+1.3}$K) is smaller than both CH₂CCS and HCCCHS and follows nicely the relative dipole principle (RDP), a kinetic rule of thumb for predicting isomer abundances that suggests that, all other chemistry among a family of isomers being the same, the member with the smallest dipole (μ) should be the most abundant. The RDP now holds for the astronomical abundance ratios of both the S-bearing and O-bearing counterparts observed in TMC-1; however, CH₂CCO continues to elude detection in any astronomical source. 

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5. Molecular-Level Understanding of Translational and Rotational Motions of C ₂ H ₆ , C ₃ H ₈ , and n -C ₄ H ₁₀ and Their Binary Mixtures with CO ₂ in ZIF-10

   https://doi.org/10.1021/acs.jced.8b00651  

   Li, Li; Zhou, Guobing; Yang, Zhen; Fang, Fang; Qiao, Qi; Hu, Na; Huang, Liangliang; Chen, Xiangshu (February 2019, Journal of Chemical & Engineering Data)