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题名: Differentiating Two Nitrosylruthenium Isomeric Complexes by Steady-State and Ultrafast Infrared Spectroscopies
作者: Yu, Pengyun1, 2; Zhao, Yan1, 3, 4; Yang, Fan1; Pang, Huifen3; Wang, Jianru3; Zhao, Juan1; Wang, Wenming3; Wang, Hongfei3; Wang, Jianping1, 2
刊名: JOURNAL OF PHYSICAL CHEMISTRY B
发表日期: 2016-11-10
卷: 120, 期:44, 页:11502-11509
收录类别: SCI
英文摘要: The [Ru(II)-NO+] group affects the structure and chemical reactivity of nitrosylruthenium(II) complexes. A characteristic infrared absorption band due to the nitrosyl (NO) stretching motion is shown in the frequency region 1800-1900 cm(-1). In this work, linear infrared (IR) and nonlinear IR methods, including pump-probe and two-dimensional (2D) IR, were utilized to study the structures and dynamics of two isomeric nitrosylruthenium complexes [Ru(OAc)(2mqn)(2)NO] (H2mqn = 2-methyl-8-quinolinol) in cis and trans isomeric configurations in a weak polar solvent (CDCl3). Using the NO stretching mode as a vibrational probe, information about local structural dynamics of the Ru complex as well as solvent fluctuation dynamics was obtained. In particular, a "structured" solvent environment is believed to form in the vicinity of the NO group in the case of the cis isomer with the aid of a neighboring OAc ligand, which is the reason for more efficient vibrational relaxation but more inhomogeneously distributed solvent and thus associated slower spectral diffusion. Our results also suggest a more anharmonic potential surface for the NO stretching mode in the less stable trans isomer.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35708
Appears in Collections:分子反应动力学实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Chem, Mol React Dynam Lab, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Shanxi Univ, Inst Mol Sci, Taiyuan 030006, Peoples R China
4.ICCAS, MRDLab, Beijing, Peoples R China
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