Journal of the American Chemical Society p. 715 - 718 (1984)
Update date:2022-08-17
Topics:
Go
Waddell
Quantum yields of disappearance of phenyl azide ( phi -PhN//3) were determined for 10** minus **5-10** minus **1 M acetonitrile solutions at room temperature by monitoring changes in its electronic absorption spectra. For dilute solutions, phi -PhN//3 equals 0. 5; however, at higher concentrations phi -PhN//3 values greatly exceed unit efficiency and indicate a chain decomposition mechanism. At ca. 2 multiplied by 10** minus **1 M, phi -PhN//3 approximately equals 3000! A plot of left bracket phi -PhN//3 right bracket vs. log left bracket PhN//3 right bracket appears exponential and since a plot of the chain length, n, vs. left bracket PhN//3 right bracket is linear (r**2 equals 0. 972), when n is calculated from an exponential function, the experimental results provide evidence for a branching chain reaction also known as an autocatalytic (spontaneously explosive) reaction. The branching chain mechanism is thought to result from reaction of a phenyl nitrene intermediate with a ground-state phenyl azide molecule to form two phenyl nitrenes. A 1,4-tetraazadiene or triaza species may also participate in the chain reaction.
View MoreChemtrade International ( China )
Contact:+86-532-86893005
Address:Rm 2-501, Huaxia Zonghe Building, No. 410 JInggangshan Road, Huangdao
Yantai Derun Liquid Crystal Materials Co. Ltd.
website:http://www.ytderun.com
Contact:86-535-6300169
Address:ROOM 90, XIANGFU STREET, FUSHAN NEW-HIGH-TECH IDUSTRY ZONE, YANTAI
Jiangsu Hualun Chemical Industry Co., Ltd
website:http://www.hualunchem.com
Contact:+86-0514-86464168 86507985
Address:39# Middle Renmin Road, Dinghuo Town
Jiacheng-Chem Enterprises Limited(expird)
Contact:86-571-86711508
Address:19 Floor, CIBC Holley International Building, No. 198,Wuxing Road, Hangzhou, China,310020
Fuxin Jintelai Fluorin Chemical Co., Ltd.
Contact:+86-0418-8229599
Address:, 7th Huagong Road, Fluorine industry development zone (Yimatu Town,Fumeng County),Fuxin City, Liaoning Province, China
Doi:10.1007/BF00845768
()Doi:10.1021/jm901727j
(2010)Doi:10.1039/DT9890000739
(1989)Doi:10.1016/j.tetlet.2005.01.019
(2005)Doi:10.1016/S0040-4039(00)80040-4
(1988)Doi:10.1007/s10600-017-1925-3
(2017)