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题名: Reinterpretation of the resonant two-photon ionization spectrum of 1-methylphenylhydrazine
作者: Dong, Changwu1, 2;  Yu, Dan1, 2;  Zhang, Lijuan1, 2;  Du, Yikui1;  Zhu, Qihe1;  Zhang, Cunhao1
关键词: 1-Methylphenylhydrazine ;  The first electronically excited state ;  Photodissociation ;  R2P1 spectrum ;  N-methylaniline ;  p-p-pi Conjugation
刊名: JOURNAL OF MOLECULAR STRUCTURE
发表日期: 2012-11-28
DOI: 10.1016/j.molstruc.2012.06.023
卷: 1028, 页:13-15
收录类别: SCI
文章类型: Article
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: The resonant two-photon ionization (R2PI) spectrum of 1-metylphenylhydrazine (MPH) reported in our previous paper (J. Mol. Struct. 984 (2010) 307-315) is in fact the R2PI spectrum of N-methylaniline (MAN). One-photon VUV ionization mass spectrum shows that the peak of MPH+ ions is predominant while the peak of MAN(+) ions is very weak, however, the two-photon UV ionization mass spectrum shows that the peak of MPH+ ions is very weak while the peak of MAN(+) ions is very strong. The difference between the two mass spectra reveals that the MPH in the first electronically excited (S-1) state may dissociate quickly, giving MAN. The photodissociation of MPH makes it impossible to scan the R2PI spectrum of MPH with the nanosecond UV laser. The UV absorption spectra of MPH and MAN in solutions show that the maximum absorption related to the S-1 <- S-0 transition of MPH is blue-shifted with respect to that of MAN, supporting the conclusion of the paper mentioned above that, for MPH in the S1 state, the non-planar structure with p-pi conjugation is stable, but the planar structure with p-p-pi conjugation can hardly exist due to the steric effect. (C) 2012 Elsevier B.V. All rights reserved.
关键词[WOS]: MASS ;  PHOTOELECTRON ;  SPECTROSCOPY ;  BENZALDEHYDE ;  ENERGY ;  S-1
语种: 英语
WOS记录号: WOS:000311174800003
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142938
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
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

Recommended Citation:
Dong, Changwu,Yu, Dan,Zhang, Lijuan,et al. Reinterpretation of the resonant two-photon ionization spectrum of 1-methylphenylhydrazine[J]. JOURNAL OF MOLECULAR STRUCTURE,2012,1028:13-15.
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