吡啶
氢化物
化学
歧化
光化学
四氟硼酸盐
金属
离子键合
离子
离子液体
药物化学
有机化学
催化作用
作者
Diane P Isaacs,Cole T. Gruninger,Tao Huang,Aldo Jordan,Genique Nicholas,Chun-Hsing Chen,Marc A. ter Horst,Jillian L. Dempsey
出处
期刊:Dalton Transactions
[The Royal Society of Chemistry]
日期:2023-01-01
卷期号:52 (10): 3210-3218
摘要
When irradiated with blue light in the presence of a Lewis base (L), [CpW(CO)3]2 undergoes metal-metal bond cleavage followed by a disproportionation reaction to form [CpW(CO)3L]+ and [CpW(CO)3]-. Here, we show that in the presence of pyridinium tetrafluoroborate, [CpW(CO)3]- reacts further to form a metal hydride complex CpW(CO)3H. The rection was monitored through in situ photo 1H NMR spectroscopy experiments and the mechanism of light-driven hydride formation was investigated by determining quantum yields of formation. Quantum yields of formation of CpW(CO)3H correlate with I-1/2 (I = photon flux on our sample tube), indicating that the net disproportionation of [CpW(CO)3]2 to form the hydride precursor [CpW(CO)3]- occurs primarily through a radical chain mechanism.
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