Photoelectron imaging of copper and silver mono- and diamine anions.
Photoelectron imaging of copper and silver mono- and diamine anions.
复制标题
铜和银的单胺和二胺阴离子的光电子成像。
DOI：
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发表时间：
2007
影响因子：
4.4
通讯作者：
A. Castleman
中科院分区：
文献类型：
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作者：
M. A. Sobhy;A. Castleman
报道了铜和银的单胺和二胺阴离子的光电子成像实验结果。光电子图像是在两种光子能量（800纳米和527纳米）下记录的。CuNH₂⁻和AgNH₂⁻的垂直 detachment能低于相应的金属原子离子，经测量分别为1.11±0.05电子伏特和1.23±0.05电子伏特。相比之下，Cu(NH₂)₂⁻和Ag(NH₂)₂⁻的电子 detachment能高于相应的金属离子，经测定分别为1.48±0.05电子伏特和1.85±0.05电子伏特。还报道了与能量相关的光电子各向异性参数。铜和银的单胺和二胺阴离子的光致 detachment相对于激光偏振方向呈现出cos²θ角分布。结合所测的各向异性参数，讨论了化学键的性质以及最高占据分子轨道的对称性。
注：“detachment”这个词在化学语境下可能有更专业准确的译法，需根据更详细的专业知识确定，这里暂译为“脱离”“分离”相关的意思。
The results of photoelectron imaging experiments of Cu and Ag mono- and diamine anions are reported. The photoelectron images were recorded at two photon energies, 800 and 527 nm. The vertical detachment energies of CuNH(2) (-) and AgNH(2) (-) are lower than those of the respective atomic metal ion and are measured to be 1.11+/-0.05 and 1.23+/-0.05 eV, respectively. By contrast, the electron detachment energies for Cu(NH(2))(2) (-) and Ag(NH(2))(2) (-) are higher than those of the corresponding metal ion and are determined to be 1.48+/-0.05 and 1.85+/-0.05 eV, respectively. Energy-dependent photoelectron anisotropy parameters are also reported. The photodetachment of the Cu and Ag mono- and diamine anions exhibit a cos(2) theta angular dependence relative to the direction of the laser polarization. The nature of the chemical bonding and the symmetry of the highest occupied molecular orbitals are discussed in relevance to the measured anisotropy parameters.