869192-75-6Relevant academic research and scientific papers
A rearrangement of azobenzene upon interaction with an aluminum(I) monomer LAl {L = HC[(CMe)(NAr)]2, Ar = 2,6-iPr2C6H 3}
Zhu, Hongping,Chai, Jianfang,Fan, Hongjun,Roesky, Herbert W.,Nehete, Umesh N.,Schmidt, Hans-Georg,Noltemeyer, Mathias
, p. 2147 - 2150 (2005)
Reaction of LAl (1) or [LAl{η2-C2(SiMe 3)2}] (2) {L = HC[(CMe)-(NAr)]2, Ar = 2,6-iPr2C6H3} with azobenzene affords a five-membered ring compound [LAl{N(H)-o-C6H4N(Ph)}] (3). In the formation of 3 a three-membered intermediate [LAl(η 2-N2Ph2)] (A) is suggested by a [1 + 2] cycloaddition reaction; A is not stable and further rearranges to 3. DFT calculations on similar compounds with modified L′ {L′ = HC[(CMe) (NPh)]2} show that the complexation energy of the reaction of L′Al with azobenzene to form [L′Al(η2-N 2Ph2)] is about -39 kcal mol-1, and the best estimate of the energy difference between [L′Al(η2-N 2Ph2)] and [L′Al{N(H)-o-C6H 4N(Ph)}] is -76 kcalmol-1. Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005.
