Gas phase photodissociation of M(acetylene)+ where M = Nb, Zr is studied with Fourier transform ion cyclotron resonance mass spectrometry to determine metal ion-ligand bond energies. These ions are generated by the dehydrogenation reaction of thermalized metal ions with ethylene and stored in the trapping cell for photodissociation experiments. From the photoappearances thresholds of the simple cleavage
用傅立叶变换离子回旋共振质谱法研究了M(
乙炔)+(其中M = Nb,Zr )的气相光解离,以确定
金属离子-
配体键能。这些离子是通过热
金属离子与
乙烯的脱氢反应生成的,并存储在捕集池中进行光离解实验。从简单的裂解产物M的阈值photoappearances +,实验键能值d 0(
锆+ C 2 ħ 2)= 59±3千卡/摩尔和d 0(NB + C 2 ħ 2)= 57±3 kcal / mol。这些能量可以与最近的理论值d È(
锆+ C 2 ħ 2 = 68千卡/摩尔和d È(NB + C 2 ħ 2 _)=千卡/摩尔。