{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T11:35:05Z","timestamp":1791545705793,"version":"4.3.4"},"reference-count":20,"publisher":"AIP Publishing","issue":"14","funder":[{"DOI":"10.13039\/501100002790","name":"Canadian Network for Research and Innovation in Machining Technology, Natural Sciences and Engineering Research Council of Canada","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100002790","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2019,4,14]]},"abstract":"<jats:p>We report observation of new infrared bands of (CS2)2 and (CS2)3 in the region of the CS2 \u03bd1 + \u03bd3 combination band (at 4.5 \u00b5m) using a quantum cascade laser. The complexes are formed in a pulsed supersonic slit-jet expansion of a gas mixture of carbon disulfide in helium. We have previously shown that the most stable isomer of (CS2)2 is a cross-shaped structure with D2d symmetry and that for (CS2)3 is a barrel-shaped structure with D3 symmetry. The dimer has one doubly degenerate infrared-active band in the \u03bd1 + \u03bd3 region of the CS2 monomer. This band is observed to have a rather small vibrational shift of \u22120.844 cm\u22121. We expect one parallel and one perpendicular infrared-active band for the trimer but observe two parallel bands and one perpendicular band. Much larger vibrational shifts of \u22128.953 cm\u22121 for the perpendicular band and \u22128.845 cm\u22121 and +16.681 cm\u22121 for the parallel bands are observed. Vibrational shifts and possible vibrational assignments, in the case of the parallel bands of the trimer, are discussed using group theoretical arguments.<\/jats:p>","DOI":"10.1063\/1.5091508","type":"journal-article","created":{"date-parts":[[2019,4,9]],"date-time":"2019-04-09T19:19:26Z","timestamp":1554837566000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":8,"title":["Infrared bands of CS2 dimer and trimer at 4.5 \u03bcm"],"prefix":"10.1063","volume":"150","author":[{"given":"A. 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