More Like this

1. Detection of 1 H -Triphosphirene ( c -HP ₃ ) and 2-Triphosphenylidene (HP ₃ ): The Isovalent Counterparts of 1 H -Triazirine ( c -HN ₃ ) and Hydrazoic Acid (HN ₃ )

   https://doi.org/10.1021/acs.jpclett.2c00639  

   Zhang, Chaojiang; Zhu, Cheng; Eckhardt, André K.; Kaiser, Ralf I. (March 2022, The Journal of Physical Chemistry Letters)
2. C–H Functionalization Approach for the Synthesis of Chiral C ₂ -Symmetric 1,5-Cyclooctadiene Ligands

   https://doi.org/10.1021/acs.orglett.9b03764  

   Zhang, Bowen; Hollerbach, Michael R.; Blakey, Simon B.; Davies, Huw M. (December 2019, Organic Letters)
3. 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)
4. Formation of All Three C ₂ H ₄ O Isomers—Ethylene Oxide ( c -C ₂ H ₄ O), Acetaldehyde (CH ₃ CHO), and Vinyl Alcohol (CH ₂ CHOH)—in Ethanol-containing Interstellar Analog Ices

   https://doi.org/10.3847/1538-4357/adc308  

   Wang, Jia; Zhang, Chaojiang; Marks, Joshua H; Kaiser, Ralf I (May 2025, The Astrophysical Journal)

   Abstract Oxygen-containing complex organic molecules are key precursors to biorelevant compounds fundamental for the origins of life. However, the untangling of their interstellar formation mechanisms has just scratched the surface, especially for oxygen-containing cyclic molecules. Here, we present the first laboratory simulation experiments featuring the formation of all three C₂H₄O isomers—ethylene oxide (c–C₂H₄O), acetaldehyde (CH₃CHO), and vinyl alcohol (CH₂CHOH)—in low-temperature model interstellar ices composed of carbon monoxide (CO) and ethanol (C₂H₅OH). Ice mixtures were exposed to galactic cosmic-ray proxies with an irradiation dose equivalent to a cold molecular cloud aged (7 ± 2) × 10⁵yr. These biorelevant species were detected in the gas phase through isomer-selective photoionization reflectron time-of-flight mass spectrometry during temperature-programmed desorption. Isotopic labeling experiments reveal that ethylene oxide is produced from ethanol alone, providing the first experimental evidence to support the hypothesis that ethanol serves as a precursor to the prototype epoxide in interstellar ices. These findings reveal feasible pathways for the formation of all three C₂H₄O isomers in ethanol-rich interstellar ices, offering valuable constraints on astrochemical models for their formation. Our results suggest that ethanol is a critical precursor to C₂H₄O isomers in interstellar environments, representing a critical step toward unraveling the formation mechanisms of oxygen-containing cyclic molecules, aldehydes, and their enol tautomers from alcohols in interstellar ices. 

   more » « less
5. “Click” Chemistry in Metal Coordination Spheres: Copper(I)-Catalyzed 3+2 Cycloadditions of Benzyl Azide and Platinum Polyynyl Complexes trans -(C ₆ F ₅ )( p -tol ₃ P) ₂ Pt(C≡C) _n H ( n = 2−6)

   https://doi.org/10.1021/om900680q  

   Gauthier, Sébastien; Weisbach, Nancy; Bhuvanesh, Nattamai; Gladysz, John A. (October 2009, Organometallics)