The A 1Σ+ ← X 1Σ+ band system of CrMo

✍ Scribed by Eileen M. Spain; Jane M. Behm; Michael D. Morse

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 513 KB
• Volume: 179
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(91)87078-p

✦ Synopsis

The 4870 A band system ofjet-cooled CrMo has been rotationally resolved and assigned as A 'Z++X 'Z+. The band system is clearly analogous to the 4597 A band system of Cr, and the 5 180 8, band system of MoZ. As in the Cr, and MO, systems, the upper state possesses a very short fluorescence lifetime, which has been measured as 14.7 f 0.3 ns. The bond lengths of the ground and excited states are r,(X 'C')= 1.8182f0.0015 A and r,(A 'C') = 1.8264~0.0014 A, respectively. These results clearly establish that CrMo, like Crl and MO?, possesses multiple d electron bonds in its ground (X 'Z+ ) and excited (A 'Z' ) electronic states.