化学
乙炔
双原子分子
反应性(心理学)
结晶学
配位复合体
分子
过渡金属
立体化学
计算化学
金属
催化作用
有机化学
医学
病理
替代医学
作者
Shuai Wang,Jeffrey D. Sears,Curtis E. Moore,Arnold L. Rheingold,Michael L. Neidig,Joshua S. Figueroa
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2022-03-24
卷期号:375 (6587): 1393-1397
被引量:11
标识
DOI:10.1126/science.abn7100
摘要
The diagonal relationship in the periodic table between phosphorus and carbon has set an expectation that the triple-bonded diatomic diphosphorus molecule (P2) should more closely mimic the attributes of acetylene (HC≡CH) rather than its group 15 congener dinitrogen (N2). Although acetylene has well-documented coordination chemistry with mononuclear transition metals, coordination complexes that feature P2 bound to a single metal center have remained elusive. We report the isolation and x-ray crystallographic characterization of a mononuclear iron complex featuring P2 coordination in a side-on, η2-binding mode. An analogous η2-bound bis-timethylsilylacetylene iron complex is reported for comparison. Nuclear magnetic resonance, infrared, and Mössbauer spectroscopic analysis-in conjunction with density functional theory calculations-demonstrate that η2-P2 and η2-acetylene ligands exert a similar electronic demand on mononuclear iron centers but exhibit different reactivity profiles.
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