Electron paramagnetic resonance study of the reaction of ground-state aluminium atoms with a series of ethers in a rotating cryostat
作者:J. H. Bernard Chenier、James A. Howard、Helen A. Joly、Marc LeDuc、Brynmor Mile
DOI:10.1039/ft9908603321
日期:——
Al atoms react with symmetric cyclic and acyclic ethers at 77 K in a rotating cryostat to give a host of mononuclear organoaluminium compounds. Magnetic parameters determined from EPR spectra given by Al atoms and acyclic ethers are consistent with the formation of novel C—C and C—H aluminium atom insertion products. A third species has been tentatively assigned to the product given by Al atom insertion
基态铝原子在旋转低温恒温器中与对称环状和无环醚在77 K下反应,生成大量单核有机铝化合物。由Al原子和无环醚给出的EPR光谱确定的磁参数与新型C-C和C-H铝原子插入产物的形成一致。暂时将第三种物质分配给通过Al原子插入C-O键得到的产物。另外,通过使氢原子从与烷氧基基团相邻的碳中丢失而形成了一个以碳为中心的基团。相反,环状醚抗铝氢化物的形成,并且在大多数情况下,形成由于在CO键上开环而产生的碳自由基。单配体和二配体配合物Al [ether]和Al [ether] 2经初步鉴定,可能是所有发生的反应的主要中间体。