Journal Article

PUBDB-2025-05208

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Isotopologues of the NeHCl Complex Observed by Chirped PulseFourier Transform Microwave Spectroscopy

Ali, M. Q. ; Bhujel, A. ; Akter, S. ; Schnell, M.DESY* ; Rivera-Rivera, L. A. ; Barratt Park, G. (Corresponding author)

2026
American Institute of Physics Melville, NY

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Please use a persistent id in citations: doi:10.1063/5.0308056  doi:10.3204/PUBDB-2025-05208

Abstract: The weakly bound Ne·HCl van der Waals dimer is a prototype for studying large-amplitudemotion in noncovalently bound systems. We report the microwave spectrum of eight isotopologuesof Ne·HCl, five of which have not previously been observed by high-resolution spectroscopy. Weexamine trends in experimentally derived van der Waals stretching force constants and effectivebond lengths that are strongly sensitive to isotopologue-dependent motional averaging along thehindered rotation coordinate. Finally, we report an updated semi-empirical three-dimensionalmorphed potential for the Ne·HCl dimer that is fitted to a large dataset including previousmicrowave, near-IR, and sub-millimeter wave data in addition to our new microwave data.

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Contributing Institute(s):

1. Spectroscopy of molecular processes (FS-SMP)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2026

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; National-Konsortium ; PubMed Central ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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