Bulletin of the Chemical Society of Japan p. 2082 - 2087 (1985)
Update date:2022-08-11
Topics:
Nagaoka, Shin-ichi
Takemura, Takeshi
Baba, Hiroaki
The photoreaction of chlorobenzene in methanol has been studied by means of emission spectroscopy.Upon irradiation with UV light, chlorobenzene reacts with methanol to form anisole with a quantum yield of 0.049 at 18 deg C.Contrary to the case of chlorobenzene, the photoreaction of p-dichlorobenzene with methanol is not observed.By combining these results with those of our recent studies on the dual phosphorescence from low-lying triplet states of halogenated benzenes, it is suggested that the photoreaction of chlorobenzene with methanol, which is a nucleophilic substitution reaction, occurs in the 3(?,?*) state.From the temperature dependence of the quantum yield, the activation energy for the nucleophilic photoreaction is estimated to be larger by about 3 - 4 kcal mol-1 than the apparent activation energy for a combination of the nonradiative 3(?,?*)->S0 process and the homolytic dissociative process concerning the C-Cl bond in the 3(?,?*) state.It is suggested that the nucleophilic photoreaction contrasts with the radical reaction leading to the dissociation of the C-Cl bond; the latter reaction occurs in the 3(?,?*) state as well as in the 3(?,?*) state.
View MoreChengdu Green technology Co.,Ltd.
Contact:86-28-82608355
Address:C9 ,Economic Headquarters, Economic Development Zone, Chengdu.
Hangzhou Sartort Biopharma Co., Ltd
website:http://www.sartort.com
Contact:86-571-87039693
Address:No. 57, Tech Park Road, Hangzhou, Zhejiang, China
Hunan Dinuo Pharmaceutical Co.,Ltd.
Contact:86-731-88280100*8561
Address:Bio-pharmaceutical industrial park, Liuyang, Hunan, China
Zhejiang kehong chemical co., ltd
Contact:0086-575-85522000
Address:xiner center RD binhai industrial zone shaoxing zhejiang province P.R.China,312073
puyang hongda shengdao new material co.,ltd.
Contact:+86-393- 4896278
Address:No.29 East Zhongyuan Road
Doi:10.1007/s11164-019-03821-4
(2019)Doi:10.1002/oms.1210170702
(1982)Doi:10.1002/chem.201701450
(2017)Doi:10.1021/ja0661919
(2006)Doi:10.1016/j.jallcom.2016.08.137
(2017)Doi:10.1021/acs.inorgchem.9b02648
(2020)