GC-MS Study of Mono- and Bishaloethylphosphonates Related to Schedule 2.B.04 of the Chemical Weapons Convention: The Discovery of a New Intramolecular Halogen Transfer
作者:Nerea Picazas-Márquez、María Sierra、Clara Nova、Juan Manuel Moreno、Nuria Aboitiz、Gema de Rivas、Miguel A. Sierra、Roberto Martínez-Álvarez、Esther Gómez-Caballero
DOI:10.1007/s13361-016-1430-0
日期:2016.9.1
A new class of compounds, mono- and bis-haloethylphosphonates (HAPs and bisHAPs, respectively), listed in Schedule 2.B.04 of the Chemical Weapons Convention (CWC), has been synthesized and studied by GC-MS with two aims. First, to improve the identification of this type of chemicals by the Organization for the Prohibition of Chemical Weapons, (OPCW). Second, to study the synergistic effect of halogen and silicon atoms in molecules undergoing mass spectrometry. Fragmentation patterns of trimethylsilyl derivatives of HAPs were found to depend on the nature of the halogen atom; this was in agreement with DFT-calculations. The data suggest that a novel intramolecular halogen transfer takes place during the fragmentation process.
《化学武器公约》(CWC)附件2.B.04中列出的一类新型化合物——单和双卤乙基膦酸酯(分别为HAPs和bisHAPs),已通过GC-MS进行了合成与研究,目的有两个。首先, 由国际禁止化学武器组织 (OPCW) 改进这一类化合物的鉴定。其次, 研究处于质谱分析过程中的分子内部卤素和硅原子之间的协同效应。三甲基硅基衍生物的碎裂模式取决于卤素原子的性质;这与DFT计算结果一致。数据表明, 在碎裂过程中发生了新的分子内卤素转移。