电负性
X射线光电子能谱
化学
铜
螺旋钻
结合能
氧化态
化学位移
分析化学(期刊)
金属
物理化学
原子物理学
物理
有机化学
核磁共振
作者
Jeanet Conradie,Elizabeth Erasmus
标识
DOI:10.1016/j.elspec.2022.147241
摘要
A series of copper(II) β-diketonato complexes [Cu(R1CHCOCHR2)2], with R1 = R2 = C6H5 (1); R1 = C6H5 and R2 = CH3 (2); R1 = R2 = CH3 (3); R1 = C6H5 and R2 = CF3 (4); R1 = CH3 and R2 = CF3 (5) and R1 = R2 = CF3 (6), was subjected to a systematic XPS study of the Cu 2p core-level photoelectron lines, their satellite structures and the LMM Auger lines. The binding energies of the main Cu 2p core-level photoelectron lines are sensitive towards chemical environment (initial state effects) and are described by linear correlations with the combined Gordy scale group electronegativity of the R-groups on the β-diketonato ligands, ΣχR, and the first electrochemical reduction potential, Epc, of the Cu compounds. The modified Auger parameters were determined from the constructed Wagner plot of the copper(II) β-diketonato complexes, which also showed that the initial state effects are dominant during the photoemission process.
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