Diagnostic fragmentations of adducts formed between carbanions and carbon disulfide in the gas phase. A joint experimental and theoretical study
作者:Micheal J. Maclean、Scott Walker、Tianfang Wang、Peter C. H. Eichinger、Patrick J. Sherman、John H. Bowie
DOI:10.1039/b916477d
日期:——
react with carbon disulfide in a modified LCQ ion trap mass spectrometer to form adducts, which when collisionally activated, decompose by processes which in some cases identify the structures of the original carbanions. For example (i) C6H5− + CS2→ C6H5CS2−→ C6H5S− + CS, occurs through a 3-membered ring ipso transition state, and (ii) the reaction between C6H5CH2− and CS2 gives an adduct which loses
选定的碳负离子会与 二硫化碳 在修改后 立法会离子阱质谱仪形成加合物,当被碰撞活化时,加合物会通过某些过程分解,该过程在某些情况下可识别原始碳负离子的结构。例如(ⅰ)C 6 H ^ 5 - + CS 2 →C 6 H ^ 5 CS 2 - →C 6 H ^ 5小号- + CS,发生通过一个3元环本位过渡状态,以及(ii)C之间的反应6 ħ 5 CH 2 -和CS 2给出了失去H成加合物2 S,而之间形成的加合物(S)ø-CH 3 Ç 6 ħ 5 -和CS 2失去ħ 2 S和CS。最后,它表明的C脱羧6 ħ 5 CH 2 CH 2 CO 2 -产生β苯乙基阴离子(的PhCH 2 CH 2 - ),以及与CS此热能化阴离子反应2形成C 6 ħ 5 CH 2 CH 2 CS 2 -其在通电时通过处理C片段特异性6 ħ 5CH 2 CH 2 CS 2 - →C 6 H ^ 5 CH 2 - CHC(S)SH→[(C