Journal of Chemical Physics p. 231 - 242 (1990)
Update date:2022-08-11
Topics:
Khundkar, Lutfur R.
Zewail, Ahmed H.
Picosecond photofragment spectroscopy of the ultraviolet (UV) photodissociation of 1,2-diiodotetrafluoroethane reveals consecutive breaking of the two C-I bonds.Spin-orbit excited (I*) atoms show a prompt rise, in agreement with a direct mode dissociation of the first bond.Ground-state (I) atoms show a biexponential buildup, one component being fast (<*>1 ps) while the other component is slow (30-150 ps depending on total energy), characteristic of the second bond breaking.The transient behavior of I atoms changes with the available energy.These results are interpreted in terms of a two step model involving a weakly bound radical.Simulations of transient behavior of I atoms, based on estimated internal energy distributions from the primary step and a model for dissociation rates as a function of energy, suggest that surface crossings are relevant to the dynamics and that the quantum yield of I atoms varies with excitation energy.
View MoreShanghai Yurui Biotechnology(Anyang) Pharmaceutical Co., Ltd
Contact:+86-0372-3662335 +86-0372-3661988
Address:hanling industrial park anyang
Quhua Zhongxing Refrigeration Technology Co.,Ltd.
Contact:+86-5708886618
Address:318 Bulding 2, No.866 Quhua Rd.,Kecheng District
Qingdao S. H. Huanyu Imp. & Exp. Co., Ltd.
Contact:86-532-88250866
Address:Room 615, World Trade Centre Building B, Hongkong Middle Roda 6#, Qingdao, Shandong, China
Jiangxi Lixin Pharmaceutical Co.,Ltd.
Contact:0798-8337222; 18979813215
Address:Jiangxi City, Jindezheng Province
Contact:+86-512-56795332
Address:No227 Shuanglong Rd, Fenghuang, Zhangjiagang
Doi:10.1021/jo00158a007
(1983)Doi:10.1246/bcsj.52.2766
(1979)Doi:10.1055/s-2003-41411
(2003)Doi:10.1016/j.bmcl.2013.08.072
(2013)Doi:10.3390/molecules24173174
(2019)Doi:10.1002/chem.202003398
(2020)