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本文报道咔唑和十三个N-取代咔唑衍生物(R=CH_3,C_2H_5,n-C_3H_7,n-C_4H_9,n-C_5H_(11),n-C_6H_(13),n-C_7H_(15),CH_2CH_2Cl,CH_2CH_2Br,CH(CH_3)_2,CH=CH_2,CH_2CH=CH_2和CH_2C_6H_5)的质谱裂解过程。结果表明:1.这些化合物都显示分子离子峰,它们的相对丰度似有随R链的增长而减弱的趋势;2.当R为碳原子数大于1的直链烷基时,各化合物的质谱中都有相同的、以m/z180和m/z167为母离子的两个碎片离子系列,即m/z180;152,127,90和m/z167,166,140,139,115,113;3.当R为乙烯基时,重排断裂是主要途径;而R为烯丙基时,断裂方式与直链烷基衍生物的相同,但α-断裂是主要的;4.R为CH_2CH_2Cl和CH_2CH_2Br时,β-断裂也有一定几率;R为CH_2C_6H_5时,主要的断裂过程是产生m/z91的(艹卓)鎓离子。
In this paper, carbazole and thirteen N-substituted carbazole derivatives (R = CH_3, C_2H_5, n_C_3H_7, n_C_4H_9, n_C_5H_ (11), n_C_6H_ (13), n_C_7H_ (15) , CH_2CH_2Cl, CH_2CH_2Br, CH (CH_3) _2, CH = CH_2, CH_2CH = CH_2 and CH_2C_6H_5). The results showed that: 1. These compounds all show molecular ion peaks, and their relative abundance tends to decrease with the increase of R chain. 2. When R is a linear alkyl group with carbon number greater than 1, The mass spectrum has the same two fragment ion series in m / z 180 and m / z 167 as parent ion, m / z 180; 152, 127, 90 and m / z 167, 166, 140, 139, 115, 113; 3. When R is vinyl, Row rupture is the main route; while R is allyl, the breaking mode is the same as that of linear alkyl derivatives, but the α-rupture is the main one. When β-R is CH_2CH_2Cl and CH_2CH_2Br, When R is CH_2C_6H_5, the main rupture process is (onzolium) onium ion at m / z 91.