Charge separation (coulomb explosion) processes of doubly charged cations of sandwich compounds in the gas phase: evidence for the junction of two C5H5 units
作者:Thomas Drewello、Carlito B. Lebrilla、Helmut Schwarz、Teodor Ast
DOI:10.1016/s0022-328x(00)99394-x
日期:1988.2
generated by electron impact ionization in the gas phase, are reported. These sandwich dications display a common behaviour in their unimolecular decomposition reactions, which are characterized by two distinct charge separation pathways. One corresponds to the reaction [MC10H10]2+ → [MC5H5]+ + C5H5+, and the other to the generation of C10H10+ and M+ (M Fe, Co, Ni). From the translational energy releases
据报道,由于气相中的电子碰撞电离而产生的二茂铁,钴茂金属和镍茂金属的电荷分离反应(库仑爆炸)。这些三明治指示在其非分子分解反应中表现出共同的行为,其特征在于两个不同的电荷分离途径。一种对应于反应[MC 10 H 10 ] 2 + →[MC 5 H 5 ] + + C 5 H 5 +,另一种对应于C 10 H 10 +和M +的生成(MFe,Co,Ni)。根据与电荷分离过程相关的平移能量释放,已计算出爆炸指示剂在其过渡结构中的电荷间隔距离。结果表明,与过渡金属离子M的性质无关,[MC 5 H 5 ] + / C 5 H + 5形成的交换距离为5.0Å,而生成C 10 H +的交换距离为6.2Å 10和M +。