Influence of oxidation state of sulfur on the dissociation of [Tz-(CH<sub>2</sub>
)<sub>n</sub>
-S(O)<sub>m</sub>
-(CH<sub>2</sub>
)<sub>n</sub>
-Tz + Na<sup>+</sup>
] adducts generated by electrospray ionization (Tz = tetrazole ring; n = 2, 3; m = 0, 1, 2)
作者:Sheila Rodrigues Oliveira、Luciano José Nogueira、Rodinei Augusti、Maria Aparecida de Resende Stoianoff、Charles Martins Aguilar、Willian Ricardo Rocha、Claudio Luis Donnici
DOI:10.1002/rcm.5338
日期:2012.2.15
Sodium adducts of six organosulfur-α,ω-ditetrazole compounds (Tz-(CH(2))(n)-S(O)(m)-(CH(2))(n)-Tz; where Tz = tetrazole ring; n = 2, 3; m = 0, 1, 2) were generated via electrospray ionization (ESI) and their fragmentation pattern assessed via collision-induced dissociation (CID). Two main dissociation channels were observed: (a) losses of N(2) and HN(3) from the tetrazole rings; (b) cleavage of the
六个有机硫-α,ω-二苯并恶唑化合物(Tz-(CH(2))(n)-S(O)(m)-(CH(2))(n)-Tz的钠加合物;其中Tz =四唑环; n = 2,3; m = 0,1,2)是通过电喷雾电离(ESI)生成的,并且它们的碎片模式是通过碰撞诱导解离(CID)评估的。观察到两个主要的解离通道:(a)四唑环中N(2)和HN(3)的损失;(b)裂解CS键。亚砜主要通过第二个裂解途径,但对于硫化物和砜,会发生四唑环裂解。B3LYP / 6-31 + G(d,p)水平的理论计算表明,对于所有加合物(硫化物,亚砜和砜),导致N(2)损失产生产物离子的离解途径最多。放热的。根据这些结果和假设,据推测,亚砜加合物的离解是在动力学控制下发生的(N(2)-损失途径是通过一种更有能量的过渡态)。另一方面,对于硫化物和砜加合物,离解过程是通过热力学控制的过程进行的。