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在一个石英反应室内，让激光解离的Ｎｉ＋与连续喷入的酯类化合物分子束流反应， 生成的产物离子经飞行时间质谱仪检测，研究了Ｎｉ＋与乙酸乙酯、乙酸丙烯酯、乙酸乙烯酯、 乙酸丁酯的气相反应。根据如下机理满意地解释了发生的反应：（１）Ｎｉ＋与酯形成激发态络合 物；（２）β－Ｈ迁移至烃氧基的氧上形成Ｎｉ＋的双配体化合物离子；（３）失去一中性配体分子得 Ｎｉ＋的单配体化合物离子。由酯的 Ｈ离和Ｄ（Ｎｉ＋－Ａ）（Ａ为配体）可推测产物离子和它们的相 对强度。
In a quartz reaction chamber, the laser-dissociated Ni + was reacted with the continuous jetted ester compound molecular beam and the product ions were detected by time-of-flight mass spectrometry. The effects of Ni + with ethyl acetate, propylene acetate, vinyl acetate Ester, butyl acetate gas phase reaction. The resulting reaction is satisfactorily explained according to the following mechanism: (1) Ni + forms an excited state complex with the ester; (2) β-H migrates to oxygen of the hydrocarbyloxy to form a bidentate ligand ion of Ni +; (3) Lost a neutral ligand molecules Ni + single ligand compound ions. The product ions and their relative intensities can be speculated from the H and D (Ni + -A) (A is a ligand) of the ester.