Journal of the Chemical Society. Perkin transactions II p. 1373 - 1379 (1983)
Update date:2022-08-16
Topics:
Griller, David
Nonhebel, Derek C.
Walton, John C.
E.s.r. spectra have been obtained for series of N-alkyl-substituted aminoallyl and aminopropynyl radicals and for aminocyanomethyl radicals.The hyperfine splittings indicate that considerable spin density is delocalized on to the NR2 group.The amino group is a more effective acceptor of spin than alkyl-, halogen, hydroxy- or alkyloxy-substituents and only slightly less effective than vinyl substituent.The barrier to rotation about the C-N bond in aminopropynyl radicals was calculated to be 44+/-5 kJ mol-1 from temperature dependence of the e.s.r. line widths, and this leads to a value of 107 kJ mol-1 for the methane-based stabilisation energy of the radical.The geometries, enthalpies of formation, and stabilisation energies of the series of N-alkyl-substituted allyl and propynyl radicals were also investigated by semi-empirical SCF MO methods.
View MoreDaicel Chiral Technologies (China)CO.,LTD
Contact:021-5046-0086*8
Address:Part C, FL 5, the 16th Building, No. 69, XiYa Road, WaiGaoQiao Free Trade Zone, Shanghai, 200131, P.R.China
Changsha Goomoo Chemical Technology Co.Ltd
Contact:+86-731-82197655
Address:No.649,Chezhan Rd.(N),Changsha,Hunan,China
Chemtrade International ( China )
Contact:+86-532-86893005
Address:Rm 2-501, Huaxia Zonghe Building, No. 410 JInggangshan Road, Huangdao
Contact:021
Address:Pudong
Lyrin Industrial Corporation Limited
Contact:86-731-82571800
Address:Rm 2408,Asia Economy International Building,Shaoshan Road South,Yuhua District,Changsha,Hunan,China
Doi:10.1007/s00706-018-2308-6
(2019)Doi:10.1007/BF00697104
(1993)Doi:10.1016/j.bmcl.2005.02.091
(2005)Doi:10.1134/S0012500810010040
(2010)Doi:10.1021/jo016098x
(2002)Doi:10.1039/b816235b
(2009)
