Isothiocyanato-Containing Carbon Chains : The Laboratory Detection of HCCCCNCS and NCCCNCS via Rotational Spectroscopy

Two new NCS-containing carbon chains of potential astronomical interest, HC4NCS and NC3NCS, were produced through dc electric discharge in a molecular beam and detected by Fourier transform microwave spectroscopy. Rotational transitions from the two species were recorded between 4 and 26 GHz, and assignments were confirmed by the distinct hyperfine structures due to the 14N nuclear quadrupole moments of these two linear, isoelectronic species. The rotational constants of HC4NCS and NC3NCS were determined experimentally to be 595.09300(3) and 596.26344(2) MHz, respectively, and are in good agreement with theoretical predictions at the MP2 and CCSD(T) levels of theory. The use of diacetylene in the precursor mixture to form HC4NCS improved the intensity of the spectrum by a factor of 10 and allowed the observation of the rotational transitions of the 34S singly substituted form in natural abundance.

Medienart:

E-Artikel

Erscheinungsjahr:

2018

Erschienen:

2018

Enthalten in:

Zur Gesamtaufnahme - volume:122

Enthalten in:

The journal of physical chemistry. A - 122(2018), 38 vom: 27. Sept., Seite 7659-7665

Sprache:

Englisch

Beteiligte Personen:

Sun, Wenhao [VerfasserIn]
van Wijngaarden, Jennifer [VerfasserIn]

Links:

Volltext

Themen:

Journal Article

Anmerkungen:

Date Completed 28.09.2018

Date Revised 01.10.2018

published: Print-Electronic

Citation Status PubMed-not-MEDLINE

doi:

10.1021/acs.jpca.8b06731

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM288028775