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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Energy-Resolved Collision-Induced Dissociation of Fe_2(CO)_y~+ (y = 1-9)
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Energy-Resolved Collision-Induced Dissociation of Fe_2(CO)_y~+ (y = 1-9)

机译：Fe_2（CO）_y〜+（y = 1-9）的能量分辨碰撞诱导解离

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摘要

Fourier transform ion cyclotron resonance mass spectrometry has been applied to the study of the energy-resolved collision-induced dissociation of di-iron carbonyl cluster cations, Fe_2(CO)_(y~+) (y = 1-9). The electron impact ionization of Fe_(CO)_5 and subsequent clustering reactions were used for the precursor ion synthesis. The sequential loss of CO ligands was observed as a typical fragmentation pathway for all Fe_2(CO)_(y~+) clusters. Threshold values for the first ligand loss from Fe_2(CO)_(1-9)~+ and for the dissociation of Fe_(2~+) were determined to be 1.05 ± 0.09, 1.23 ± 0.10, 1.29 ± 0.09, 1.25 ± 0.09, 0.81 ± 0.08, 1.10 ± 0.08, 082 ± 0.11, 0.33 ± 0.08, 1.08 ± 0.11, and 2.66 ± 0.13 eV. The sum of these 10 values is in good agreement with the literature endothermicity for the Fe_2(CO)_9~+ → Fe~+ + Fe + 9CO reaction. Nonmonotonic variations in the sequential thresholds are discussed in terms of spin conservation.
机译：傅里叶变换离子回旋共振质谱已被用于研究二铁羰基簇簇阳离子Fe_2（CO）_（y〜+）（y = 1-9）的能量分辨碰撞诱导解离。 Fe_（CO）_5的电子碰撞电离和随后的簇化反应用于前驱体离子合成。观察到CO配体的顺序损失是所有Fe_2（CO）_（y〜+）簇的典型断裂途径。 Fe_2（CO）_（1-9）〜+的第一个配体损失和Fe_（2〜+）的解离的阈值确定为1.05±0.09、1.23±0.10、1.29±0.09、1.25±0.09 ，0.81±0.08、1.10±0.08、082±0.11、0.33±0.08、1.08±0.11和2.66±0.13 eV。这10个值的总和与Fe_2（CO）_9〜+→Fe〜+ + Fe + 9CO反应的吸热性相吻合。从自旋守恒的角度讨论了顺序阈值中的非单调变化。

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