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题名: Mid-Infrared Pump-Probe Spectroscopy of Dimeric pi-Cyclopentadienyl-dicarbonyliron [CpFe(CO)(2)](2)
作者: Yang Fan1;  Liu Ying-Liang1;  Wang Jian-Ping1
关键词: Dimeric pi-cyclopentadienyldicarbonyliron ;  Femtosecond infrared pump-probe spectroscopy ;  Vibrational relaxation dynamics ;  Molecular structural dynamics
刊名: ACTA PHYSICO-CHIMICA SINICA
发表日期: 2012-04-01
DOI: 10.3866/PKU.WHXB201202023
卷: 28, 期:4, 页:759-765
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: The structural and vibrational dynamics of the non-bridged C O stretching vibrations of two different tautomers of dimeric pi-cyclopentadienyldicarbonyliron [CpFe(CO)(2)](2) in CH2Cl2 were examined using steady-state and femtosecond infrared pump-probe methods at 5-mu m wavelength. The two main species in [CpFe(CO)(2)](2) had a cis:trans molar ratio of 1.7, and showed different vibrational and rotational relaxation dynamics. Both species showed biexponential decay in their two C O stretching vibrational excited-state populations, with a fast component (< 1 ps) and a slow component (20 ps). The former was believed to be related to the rapid dephasing processes of the coherent state caused by broadband excitation, while the latter was the typical lifetime for the C O stretching vibrational excited state. Having a significant permanent dipole, the cis structure could interact strongly with solvent, resulting in relatively slower rotational dynamics. Our work demonstrated that the frequency and vibrational-rotational dynamics of the non-bridged C O stretching vibrations were very sensitive to both molecular structures and the solvent.
关键词[WOS]: 2-DIMENSIONAL INFRARED-SPECTROSCOPY ;  RESOLVED IR SPECTROSCOPY ;  CRYSTAL STRUCTURE ;  CIS-ISOMER ;  2D IR ;  PHOTOCHEMISTRY ;  TETRACARBONYL ;  PHOTOREACTIONS ;  CP2FE2(CO)4 ;  PHOSPHINES
语种: 英语
WOS记录号: WOS:000302764400003
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138102
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Chem, State Key Lab Mol React Dynam, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China

Recommended Citation:
Yang Fan,Liu Ying-Liang,Wang Jian-Ping. Mid-Infrared Pump-Probe Spectroscopy of Dimeric pi-Cyclopentadienyl-dicarbonyliron [CpFe(CO)(2)](2)[J]. ACTA PHYSICO-CHIMICA SINICA,2012,28(4):759-765.
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