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Vibrational and Electronic Spectroscopy of 2-Cyanoindene Cations

Thomas E. Douglas-Walker, Eleanor K. Ashworth, Mark H. Stockett, Francis C. Daly, Isabelle Chambrier, Vincent J. Esposito, Marius Gerlach, Angel Zheng, Julianna Palotás, Andrew N. Cammidge, Ewen K. Campbell, Sandra Brünken and James N. Bull
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Infrared Cooling in an Anharmonic Cascade Framework: 2-Cyanoindene, the Smallest Cyano-PAH Identified in Taurus Molecular Cloud-1

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Cosmic ray interactions with indene and adamantane seeded water ice mantles

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The Rotational Spectrum of 1-cyanocyclopentene and Its Search towards TMC-1

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Structure determination of 2,5-difluorophenol by microwave spectroscopy

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Recurrent Fluorescence of Polycyclic Aromatic Hydrocarbon Isomers: A Comparative Study

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Identification of the interstellar 1-cyano propargyl radical (HCCCHCN) in TMC-1

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Centimeter-Wave Rotational Spectroscopy of Ethynylbenzonitriles: Structural Analysis and Astronomical Search

D. Archie Stewart, Thomas H. Speak, Elsa Q. H. Yuan, Reace H. J. Willis, Victoria B. Sconce, Zachary T. P. Fried, Martin S. Holdren, Andrew Lipnicky, Christopher Shingledecker, Michael C. McCarthy, Ilsa R. Cooke, Gabi Wenzel and Brett A. McGuire
The Journal of Physical Chemistry A 129 (49) 11400 (2025)
https://doi.org/10.1021/acs.jpca.5c05772

Spectral survey of the diffuse gas toward BL Lac in the Q band

Maryvonne Gerin, Harvey Liszt, Belén Tercero and José Cernicharo
Astronomy & Astrophysics 703 A125 (2025)
https://doi.org/10.1051/0004-6361/202556101

Binding Energies of Interstellar Complex Organic Molecules on Water Ice Surfaces: A Quantum Chemical Investigation

Harjasnoor Kakkar, Berta Martínez-Bachs, Cecilia Ceccarelli, Piero Ugliengo and Albert Rimola
The Astrophysical Journal 993 (2) 184 (2025)
https://doi.org/10.3847/1538-4357/ae064a

Photochemical pathways in astronomical ices: A computational study of singlet oxygen reactions with hydrocarbons

Amit Daniely, Alon Zamir, Helen R. Eisenberg, Ester Livshits, Elettra Piacentino, Jennifer B. Bergner, Karin I. Öberg and Tamar Stein
The Journal of Chemical Physics 162 (1) (2025)
https://doi.org/10.1063/5.0214165

Extending the rotational spectrum of cyclopentadiene towards higher frequencies and vibrational states

Luis Bonah, Benedikt Helmstaedter, Jean-Claude Guillemin, Stephan Schlemmer and Sven Thorwirth
Journal of Molecular Spectroscopy 408 111967 (2025)
https://doi.org/10.1016/j.jms.2024.111967

Theoretical study on the mechanisms of formation of primal carbon clusters and nanoparticles in space

Dobromir A. Kalchevski, Dimitar V. Trifonov, Stefan K. Kolev, Valentin N. Popov, Hristiyan A. Aleksandrov and Teodor I. Milenov
Physical Chemistry Chemical Physics 27 (4) 1819 (2025)
https://doi.org/10.1039/D4CP02865A

Hunting pre-stellar cores with APEX: Overview

P. Caselli, S. Spezzano, E. Redaelli, J. Harju, D. Arzoumanian, F. Lique, O. Sipilä, J. E. Pineda, E. Wirström, F. Wyrowski and A. Belloche
Astronomy & Astrophysics 703 A77 (2025)
https://doi.org/10.1051/0004-6361/202556026

VUV Photoionization Study of the Gas Formation of the Indene-A Molecular Building Block of Nonplanar PAHs

Wang Li, Yi-Fan Zhang, Chang-Yang Wang, Jiu-Zhong Yang, Ming-Gao Xu and Long Zhao
The Journal of Physical Chemistry A 129 (47) 10951 (2025)
https://doi.org/10.1021/acs.jpca.5c04551

Irradiation of condensed CO reveals a new pathway for the formation of aromatic molecules in astrochemical ices

Wafikul Khan, R Ramachandran, S Gupta, J K Meka, V Venkataraman, B N Rajasekhar, P Janardhan, Anil Bhardwaj, N J Mason and B Sivaraman
Life Sciences in Space Research (2025)
https://doi.org/10.1016/j.lssr.2025.09.007

Discovery of interstellar phenalene (c-C13H10): A new piece in the chemical puzzle of PAHs in space

C. Cabezas, M. Agúndez, C. Pérez, D. Villar-Castro, G. Molpeceres, D. Pérez, A. L. Steber, R. Fuentetaja, B. Tercero, N. Marcelino, A. Lesarri, P. de Vicente and J. Cernicharo
Astronomy & Astrophysics 701 L8 (2025)
https://doi.org/10.1051/0004-6361/202556687

Reactivity of anthracene cations with acetylene: spectroscopic evidence for barrierless PAH growth pathways in the gas phase

Anna Maria Reider, Miriam Kappe, Martin Schmidt, Fabio Zappa, Olga V. Lushchikova, Serge A. Krasnokutski and Paul Scheier
Molecular Physics (2025)
https://doi.org/10.1080/00268976.2025.2568076

Detection of the linear SiC3 and SiC5 radicals in IRC+10216

J. Cernicharo, J. R. Pardo, M. Agúndez, J. P. Fonfría, L. Velilla-Prieto, C. Cabezas, B. Tercero, P. de Vicente and M. Guélin
Astronomy & Astrophysics 700 L20 (2025)
https://doi.org/10.1051/0004-6361/202556370

From the laboratory to space: unveiling isomeric diversity of C5H2 in the reaction of tricarbon (C3, X1Σg+) with the vinyl radical (C2H3, X2A′)

Iakov A. Medvedkov, Anatoliy A. Nikolayev, Shane J. Goettl, Zhenghai Yang, Alexander M. Mebel and Ralf I. Kaiser
Chemical Science 16 (38) 17859 (2025)
https://doi.org/10.1039/D5SC04699H

The missing giant: do FAST spectroscopic observations reveal a scarcity of large polycyclic aromatic hydrocarbons in astronomical environments?

Yi Shao, Yong Zhang, Xu-Jia Ouyang and Chuan-Peng Zhang
Monthly Notices of the Royal Astronomical Society 542 (3) 2639 (2025)
https://doi.org/10.1093/mnras/staf1393

Vibrational Frequencies and Infrared Spectra of Polycyclic Antiaromatic Hydrocarbons from Biphenylene to Anti-Kekulene: Unexplored Potential Contributors to the Mid-Infrared Region

Elaina Heath, Athena R. Flint and Ryan C. Fortenberry
ACS Earth and Space Chemistry 9 (11) 2661 (2025)
https://doi.org/10.1021/acsearthspacechem.5c00201

Rotational spectroscopy of 1,2-dihydronaphthalene, 1,4-dihydronaphthalene, and 1,2,3,4-tetrahydronaphthalene

Yuting Li, Fang Shen, Yan Feng, Wenqi Lv, Haiying Huang, Jinxi Huang and Gang Feng
The Journal of Chemical Physics 162 (13) (2025)
https://doi.org/10.1063/5.0257949

Rotationally inelastic scattering of cyanocyclopentadiene by helium atoms

Karina Sogomonyan, Malek Ben Khalifa, Phoebe Pierré and Jérôme Loreau
The Journal of Chemical Physics 163 (8) (2025)
https://doi.org/10.1063/5.0282853

Radiative Stabilization of the Indenyl Cation: Recurrent Fluorescence in a Closed-Shell Polycyclic Aromatic Hydrocarbon

James N. Bull, Arun Subramani, Chang Liu, Samuel J. P. Marlton, Eleanor K. Ashworth, Henrik Cederquist, Henning Zettergren and Mark H. Stockett
Physical Review Letters 134 (22) (2025)
https://doi.org/10.1103/PhysRevLett.134.228002

From Anti‐Van't Hoff Le Bel Molecules of C6NH to Astronomically Relevant and Experimentally Known and Unknown Carbenes

Shilpa Shajan, Devipriya Sivadasan, Krishnan Thirumoorthy and Venkatesan S. Thimmakondu
ChemPhysChem 26 (20) (2025)
https://doi.org/10.1002/cphc.202500455

Gas-phase synthesis of anthracene and phenanthrene via radical-radical reaction induced ring expansions

Shane J. Goettl, Andrew M. Turner, Vladislav S. Krasnoukhov, Valeriy N. Azyazov, Keisuke Kanayama, Patrick Hemberger, Alexander M. Mebel and Ralf I. Kaiser
Science Advances 11 (23) (2025)
https://doi.org/10.1126/sciadv.adv0692

Rotational Spectroscopy and Tentative Interstellar Detection of 3-hydroxypropanal (HOCH2CH2CHO) in the G+0.693-0.027 Molecular Cloud

Zachary T. P. Fried, Roman A. Motiyenko, Miguel Sanz-Novo, Lucie Kolesniková, Jean-Claude Guillemin, Laurent Margulès, Tereza Uhlíková, Arnaud Belloche, Jes K. Jørgensen, Martin S. Holdren, Ci Xue, Štěpán Urban, Izaskun Jiménez-Serra, Victor M. Rivilla and Brett A. McGuire
The Astrophysical Journal 992 (2) 187 (2025)
https://doi.org/10.3847/1538-4357/adfc62

Laboratory Rotational Spectra of Cyanocyclohexane and Its Siblings (1- and 4-Cyanocyclohexene) Using a Compact CP-FTMW Spectrometer for Interstellar Detection

Gabi Wenzel, Martin S. Holdren, D. Archie Stewart, Hannah Toru Shay, Alex N. Byrne, Ci Xue and Brett A. McGuire
The Journal of Physical Chemistry A 129 (18) 3986 (2025)
https://doi.org/10.1021/acs.jpca.5c00980