Journal of the Chemical Society - Faraday Transactions p. 2383 - 2389 (1991)
Update date:2022-08-04
Topics:
Fahr, A.
Braun, W.
Klein, R.
Dorko, W.
Okabe, H.
The photodecomposition of trimethyl arsine results in fragments/products that exhibit numerous UV overlapping absorptions.Nevertheless, the quantum yields of CH3, intramolecular C2H6, As(CH3) and As(CH3)2 production can be obtained as 1.25, 0, 0.25 and 0.75, repectively, employing both quantitative spectroscopic detection of CH3 at 216.4 nm and GC-mass spectral analysis of isotopically labelled ethane end-products.The isotopic experiments employed photolysis of mixtures of As(CH3)3 and (CD3)2CO, the latter providing the actinometric standard.Two absorptions attributed to As(CH3)2 were monitored by kinetic spectroscopy and a schematic mechanism describing the system is proposed.Some distinguishing features of the mechanism include: (1) the quantum yields appear to be independent from pressure, (2) rates of reaction of CH3 with arsenic-containing fragments are slower than that of CH3 combination, (3) a metastable absorption attributed to As(CH3)2 was observed, the rate constant for its quenching by helium to the ground state was measured.
View MoreJiangxi Global Natural Spice Co., Ltd.
website:https://www.jxhqxl.com/
Contact:+86-796-8106598
Address:No.89, Wenshan Road,South Industrial Park, Jishui County,Jiangxi Province
Shijiazhuang City Xiehe Pharmaceutical Co., Ltd
Contact:+86-311-80817929
Address:Shangzhuang,Shijiazhuang,China
Penglai Qianwei Chemical Co., Ltd.
Contact:86-535-3357802
Address:Shahelu (north), Penglai, Shandong, China
Shanghai Hanhong Scientific Co.,Ltd.
website:http://www.chemvia.com
Contact:+86-21-64541543,54280654,13918533501
Address:Jiachuan Road 245
Shanghai Pengkai Chemical Co.,Ltd
Contact:+86-21-60526671
Address:No.4226 Duzhuang Rd Minhang District Shanghai China
Doi:10.1021/acs.orglett.5b00351
(2015)Doi:10.1002/jlac.198219820908
(1982)Doi:10.1002/chem.201500118
(2015)Doi:10.1021/jm0503087
(2006)Doi:10.1002/adsc.201200175
(2012)Doi:10.1007/s11095-005-5265-9
(2005)
