{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,2]],"date-time":"2026-06-02T20:41:41Z","timestamp":1780432901265,"version":"3.54.1"},"reference-count":45,"publisher":"AIP Publishing","issue":"7","funder":[{"DOI":"10.13039\/100000001","name":"National Science Foundation","doi-asserted-by":"publisher","award":["CHE-2100542"],"award-info":[{"award-number":["CHE-2100542"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2022,8,21]]},"abstract":"<jats:p>The D5\u03a0\u2013X5\u0394 (0,0) band of vanadium hydride at 654\u00a0nm has been recorded by laser excitation spectroscopy and represents the first analyzed spectrum of VH in the gas phase. The molecules were generated using a hollow cathode discharge source, with laser-induced fluorescence detected via the D5\u03a0\u2013A5\u03a0 (0,0) transition. All five main (\u0394\u03a9 = \u0394\u039b) subbands were observed as well as several satellite ones, which together create a rather complex and overlapped spectrum covering the region 15\u2009180\u201315\u2009500 cm\u22121. The D5\u03a0 state displays the effects of three strong local perturbations, which are likely caused by interactions with high vibrational levels of the B5\u03a3\u2212 and c3\u03a3\u2212 states, identified in a previous multiconfigurational self-consistent field study by Koseki et al. [J. Phys. Chem. A 108, 4707 (2004)]. Molecular constants describing the X5\u0394, A5\u03a0, and D5\u03a0 states were determined in three separate least-squares fits using effective Hamiltonians written in a Hund\u2019s case (a) basis. The fine structure of the ground state is found to be consistent with its assignment as a \u03c3\u03c02\u03b4, 5\u0394 electronic state. The fitted values of its first-order spin\u2013orbit and rotational constants in the ground state are A=36.537815cm\u22121 and B = 5.7579(13)\u00a0cm\u22121, the latter of which yields a bond length of R0=1.72122 \u00c5. This experimental value is in good agreement with previous computational studies of the molecule and fits well within the overall trend of decreasing bond length across the series of 3d transition metal monohydrides.<\/jats:p>","DOI":"10.1063\/5.0105844","type":"journal-article","created":{"date-parts":[[2022,7,18]],"date-time":"2022-07-18T18:05:20Z","timestamp":1658167520000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":5,"title":["First detection and analysis of an electronic spectrum of vanadium hydride: The D5<b>\u03a0<\/b>\u2013X5<b>\u0394<\/b> (0,0) band"],"prefix":"10.1063","volume":"157","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7731-5110","authenticated-orcid":false,"given":"Thomas D.","family":"Varberg","sequence":"first","affiliation":[{"name":"Department of Chemistry, Macalester College , 1600 Grand Ave., St. Paul, Minnesota 55105, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"317","published-online":{"date-parts":[[2022,8,19]]},"reference":[{"key":"2023081900045052800_c1","doi-asserted-by":"publisher","first-page":"222","DOI":"10.1007\/bf01333834","volume":"84","year":"1933","journal-title":"Z. 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