{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,4]],"date-time":"2026-10-04T21:24:15Z","timestamp":1791149055422,"version":"4.1.0"},"reference-count":63,"publisher":"AIP Publishing","issue":"3","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2010,7,21]]},"abstract":"<jats:p>Optical spectra of jet-cooled diatomic CrC have been recorded in the near infrared region using resonant two-photon ionization spectroscopy combined with mass-selective detection of the resulting ions. Several weak transitions have been observed, along with one relatively strong band near 842 nm. Rotational resolution and analysis of this band confirms that the ground state is of \u03a33\u2212 symmetry. Ab initio calculations have been performed that demonstrate that the ground state is highly multiconfigurational in nature, with a leading configuration of 1\u03c322\u03c321\u03c041\u03b42 for the ten valence electrons. From the rotational analysis of the 842 nm \u03a33\u2212\u2190X\u2009\u03a33\u2212 band, the derived spectroscopic constants of the ground and excited states for C52rC12 are B0\u2033=0.659\u200997(49), \u03bb0\u2033=6.74(24), \u03b30\u2033=\u22120.066(20), T0=11\u2009870.7660(65), B\u2032=0.608\u200929(39), \u03bb\u2032=7.11(24), and \u03b3\u2032=0.144(17)\u2002cm\u22121. Here and throughout this article, 1\u03c3 error limits are reported in parentheses. These rotational constants may be inverted to provide the bond lengths in the ground and excited states, r0\u2033=1.6188(6)\u2002\u00c5 and r\u2032=1.6861(5)\u2002\u00c5, respectively. Ab initio calculations show that the upper state is the third state of \u03a33\u2212 symmetry.<\/jats:p>","DOI":"10.1063\/1.3456178","type":"journal-article","created":{"date-parts":[[2010,7,20]],"date-time":"2010-07-20T22:14:50Z","timestamp":1279664090000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":22,"title":["Electronic spectroscopy and electronic structure of diatomic CrC"],"prefix":"10.1063","volume":"133","author":[{"given":"Dale J.","family":"Brugh","sequence":"first","affiliation":[{"name":"University of Utah 1 Department of Chemistry, , Salt Lake City, Utah 84112, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael D.","family":"Morse","sequence":"additional","affiliation":[{"name":"University of Utah 1 Department of Chemistry, , Salt Lake City, Utah 84112, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Apostolos","family":"Kalemos","sequence":"additional","affiliation":[{"name":"National and Kapodistrian University of Athens 2 Department of Chemistry, Laboratory of Physical Chemistry, , P.O. 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