H_4^+的稳定性及形成和分解过程实验研究

Study on the stability and formation and dissociation mechanism of H_4^+

利用Penningiontrap获得了七种不同延时时间 (即反应时间 )的离子谱Hn+(n≤ 4) ,用充分的实验数据证实了H4 +是稳定的 ,稳定时间达 1秒量级。实验结果显示 :H4 +是经合成反应H2 ++H2 →H4 +,H3++H +H2 →H4 ++H2 产生的 ;H4 +的分解产物是H3++H。分析得出 :H4 +构型为H3+ 核构型。

We obtain seven spectra of H n +( n ≤4) cluster ions at different delay time using a penning ion trap. The data is adequate to confirm that H 4 + is stable cluster ions for 1s. The experimental results suggest that H 4 + is formed by reaction H 3 + + H + H 2 → H 4 + + H 2, H 2 + + H 2 → H 4 +; the dissociation production of H 4 + is H 3 +; and H 4 + configuration is a H 3 + core weakly bonded by a ligand H atom