Ultrafast infrared spectroscopy of vibrational CO-stretch up-pumping and relaxation dynamics of W(CO)6

✍ Scribed by Steven M. Arrivo; Thomas P. Dougherty; W.Tandy Grubbs; Edwin J. Heilweil

• Book ID: 103031255
• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 552 KB
• Volume: 235
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(95)00124-m

✦ Synopsis

The ultrafast infrared (IR) vibrational up-pumping and energy relaxation dynamics are reported of the Tlu CO-stretching manifold of W(CO) 6 in room temperature n-hexane solution. The frequency and energy content of the tunable 2 ps IR pump pulse strongly influences the distribution of vibrational level population. With broadband transient IR absorption spectroscopy, vibrational T 1 lifetimes of the overtone states of W(CO) 6 were directly determined to be 140 + 20 (1 o') ps for v = 1, 75 ___ 20 ps for v = 2 and 30 + 15 ps for v = 3. Tlu to Eg intermode energy transfer occurs on the 10-20 ps timescale.