Home

Citation: ZHANG Feng, CAO Zhen-Zhou, QIN Xiao, LIU Yu-Zhu, WANG Yan-Mei, ZHANG Bing. C—Br Bond Dissociation Mechanisms of 2-Bromothiophene and 3-Bromothiophene at 267 nm[J]. Acta Physico-Chimica Sinica, ;2008, 24(08): 1335-1341. doi: 10.1016/S1872-1508(08)60055-8 shu

C—Br Bond Dissociation Mechanisms of 2-Bromothiophene and 3-Bromothiophene at 267 nm

1.
State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, P. R. China; Graduate School of the Chinese Academy of Sciences, Beijing 100049, P. R. China

Received Date: 3 April 2008
Available Online: 5 June 2008

C—Br bond dissociation mechanisms of 2-bromothiophene and 3-bromothiophene at 267 nm were investigated using ion velocity imaging technique. Translational energy distributions and angular distributions of the photoproducts, Br(2P3/2) and Br*(2P1/2), were obtained and the possible dissociation channels were analyzed. For these two bromothiophenes, the Br fragments were produced via three channels: (i) the fast predissociation following the intersystemcrossing fromthe excited singlet state to repulsive triplet state; (ii) the hot dissociation on highly vibrational ground state following the internal conversion of the excited singlet state; and (iii) dissociation following the multiphoton ionization of the parent molecules. Similar channels were involved for photoproduct Br* of the 2-bromothiophene dissociation at 267 nm; while for the photoproduct Br* of 3-bromothiophene, the dissociation channel via internal conversion from the excited singlet state to highly vibrational ground state became dominating and the fast predissociation channel via the excited triplet state almost disappeared. Informations about the relative contribution, energy disposal, and the anisotropy of each channel were quantitatively given. It was found that with the position of Br atom in the thienyl being far from S atom, the relative ratios of products from channels (i) and (ii) decreased obviously and the anisotropies corresponding to each channel became weaker.
- Bromothiophene,
- Photodissociation,
- Ion velocity imaging
1. [1]
  Xiaowu Zhang , Pai Liu , Qishen Huang , Shufeng Pang , Zhiming Gao , Yunhong Zhang . Acid-Base Dissociation Equilibrium in Multiphase System: Effect of Gas. University Chemistry, 2024, 39(4): 387-394. doi: 10.3866/PKU.DXHX202310021
2. [2]
  Jinyao Du , Xingchao Zang , Ningning Xu , Yongjun Liu , Weisi Guo . Electrochemical Thiocyanation of 4-Bromoethylbenzene. University Chemistry, 2024, 39(6): 312-317. doi: 10.3866/PKU.DXHX202310039
3. [3]
  Xiaoling LUO , Pintian ZOU , Xiaoyan WANG , Zheng LIU , Xiangfei KONG , Qun TANG , Sheng WANG . Synthesis, crystal structures, and properties of lanthanide metal-organic frameworks based on 2, 5-dibromoterephthalic acid ligand. Chinese Journal of Inorganic Chemistry, 2024, 40(6): 1143-1150. doi: 10.11862/CJIC.20230271
4. [4]
  Yinwu Su , Xuanwen Zheng , Jianghui Du , Boda Li , Tao Wang , Zhiyan Huang . Green Synthesis of 1,3-Dibromoacetone Using Halogen Exchange Method: Recommending a Basic Organic Synthesis Teaching Experiment. University Chemistry, 2024, 39(5): 307-314. doi: 10.3866/PKU.DXHX202311092
5. [5]
  Zian Lin , Yingxue Jin . Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry (MALDI-MS) for Disease Marker Screening and Identification: A Comprehensive Experiment Teaching Reform in Instrumental Analysis. University Chemistry, 2024, 39(11): 327-334. doi: 10.12461/PKU.DXHX202403066
6. [6]
  Wenjun Zheng . Application in Inorganic Synthesis of Ionic Liquids. University Chemistry, 2024, 39(8): 163-168. doi: 10.3866/PKU.DXHX202401020
7. [7]
  Hong LI , Xiaoying DING , Cihang LIU , Jinghan ZHANG , Yanying RAO . Detection of iron and copper ions based on gold nanorod etching colorimetry. Chinese Journal of Inorganic Chemistry, 2024, 40(5): 953-962. doi: 10.11862/CJIC.20230370
8. [8]
  Xiaochen Zhang , Fei Yu , Jie Ma . 多角度数理模拟在电容去离子中的前沿应用. Acta Physico-Chimica Sinica, 2024, 40(11): 2311026-. doi: 10.3866/PKU.WHXB202311026
9. [9]
  Rui Li , Huan Liu , Yinan Jiao , Shengjian Qin , Jie Meng , Jiayu Song , Rongrong Yan , Hang Su , Hengbin Chen , Zixuan Shang , Jinjin Zhao . 卤化物钙钛矿的单双向离子迁移. Acta Physico-Chimica Sinica, 2024, 40(11): 2311011-. doi: 10.3866/PKU.WHXB202311011
10. [10]
  Doudou Qin , Junyang Ding , Chu Liang , Qian Liu , Ligang Feng , Yang Luo , Guangzhi Hu , Jun Luo , Xijun Liu . Addressing Challenges and Enhancing Performance of Manganese-based Cathode Materials in Aqueous Zinc-Ion Batteries. Acta Physico-Chimica Sinica, 2024, 40(10): 2310034-. doi: 10.3866/PKU.WHXB202310034
11. [11]
  Feiya Cao , Qixin Wang , Pu Li , Zhirong Xing , Ziyu Song , Heng Zhang , Zhibin Zhou , Wenfang Feng . Magnesium-Ion Conducting Electrolyte Based on Grignard Reaction: Synthesis and Properties. University Chemistry, 2024, 39(3): 359-368. doi: 10.3866/PKU.DXHX202308094
12. [12]
  Xuyang Wang , Jiapei Zhang , Lirui Zhao , Xiaowen Xu , Guizheng Zou , Bin Zhang . Theoretical Study on the Structure and Stability of Copper-Ammonia Coordination Ions. University Chemistry, 2024, 39(3): 384-389. doi: 10.3866/PKU.DXHX202309065
13. [13]
  Dongqi Cai , Fuping Tian , Zerui Zhao , Yanjuan Zhang , Yue Dai , Feifei Huang , Yu Wang . Exploration of Factors Influencing the Determination of Ion Migration Number by Hittorf Method. University Chemistry, 2024, 39(4): 94-99. doi: 10.3866/PKU.DXHX202310031
14. [14]
  Jiayu Tang , Jichuan Pang , Shaohua Xiao , Xinhua Xu , Meifen Wu . Improvement for Measuring Transference Numbers of Ions by Moving-Boundary Method. University Chemistry, 2024, 39(5): 193-200. doi: 10.3866/PKU.DXHX202311021
15. [15]
  Yifeng Xu , Jiquan Liu , Bin Cui , Yan Li , Gang Xie , Ying Yang . “Xiao Li’s School Adventures: The Working Principles and Safety Risks of Lithium-ion Batteries”. University Chemistry, 2024, 39(9): 259-265. doi: 10.12461/PKU.DXHX202404009
16. [16]
  Peiran ZHAO , Yuqian LIU , Cheng HE , Chunying DUAN . A functionalized Eu³⁺ metal-organic framework for selective fluorescent detection of pyrene. Chinese Journal of Inorganic Chemistry, 2024, 40(4): 713-724. doi: 10.11862/CJIC.20230355
17. [17]
  Wendian XIE , Yuehua LONG , Jianyang XIE , Liqun XING , Shixiong SHE , Yan YANG , Zhihao HUANG . Preparation and ion separation performance of oligoether chains enriched covalent organic framework membrane. Chinese Journal of Inorganic Chemistry, 2024, 40(8): 1528-1536. doi: 10.11862/CJIC.20240050
18. [18]
  Qingtang ZHANG , Xiaoyu WU , Zheng WANG , Xiaomei WANG . Performance of nano Li₂FeSiO₄/C cathode material co-doped by potassium and chlorine ions. Chinese Journal of Inorganic Chemistry, 2024, 40(9): 1689-1696. doi: 10.11862/CJIC.20240115
19. [19]
  Xiaoning TANG , Shu XIA , Jie LEI , Xingfu YANG , Qiuyang LUO , Junnan LIU , An XUE . Fluorine-doped MnO₂ with oxygen vacancy for stabilizing Zn-ion batteries. Chinese Journal of Inorganic Chemistry, 2024, 40(9): 1671-1678. doi: 10.11862/CJIC.20240149
20. [20]
  Siyu Zhang , Kunhong Gu , Bing'an Lu , Junwei Han , Jiang Zhou . Hydrometallurgical Processes on Recycling of Spent Lithium-lon Battery Cathode: Advances and Applications in Sustainable Technologies. Acta Physico-Chimica Sinica, 2024, 40(10): 2309028-. doi: 10.3866/PKU.WHXB202309028

Get Citation

PDF

XML

Metrics

PDF Downloads(1737)
Abstract views(3176)
HTML views(4)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Address：Zhongguancun North First Street 2,100190 Beijing, PR China Tel: +86-010-82449177-888

DownLoad: Full-Size Img PowerPoint

Return