An Iron Complex with a Bent, O-Coordinated CO2 Ligand Discovered by Femtosecond Mid-Infrared Spectroscopy.

An Iron Complex with a Bent, O-Coordinated CO2 Ligand Discovered by Femtosecond Mid-Infrared Spectroscopy.
复制标题

飞秒中红外光谱发现具有弯曲 O 配位 CO2 配体的铁络合物

DOI:
10.1002/anie.201800672
复制
发表时间:
2018
期刊:
影响因子:
--
通讯作者:
P. Vöhringer
P. Vöhringer
中科院分区:
--
文献类型:
--
作者:
S. Straub;P. Brünker;J. Lindner;P. Vöhringer

文献摘要

参考文献

被引文献

相似文献

过渡金属活化二氧化碳被广泛认为是利用这种温室气体作为精细化学品可持续生产的可再生原料的关键步骤。然而,CO2 与金属配体球的结合和解除结合的动力学从未在时域中观察到。草酸铁阴离子在水溶液中用作这些动力学的独特模型系统,并应用飞秒紫外泵中红外探针光谱以时间分辨方式探索其光致初级过程。光激发后,中性 CO2 分子在约 500fs 内从配合物中排出,生成高度有趣的五配位二草酸亚铁,其带有弯曲的二氧化碳自由基阴离子配体,即 CO2 的还原激活形式,通过其两个氧原子之一与金属中心进行端配位。
The activation of carbon dioxide by transition metals is widely recognized as a key step for utilizing this greenhouse gas as a renewable feedstock for the sustainable production of fine chemicals. However, the dynamics of CO2binding and unbinding to and from the ligand sphere of a metal have never been observed in the time domain. The ferrioxalate anion is used in aqueous solution as a unique model system for these dynamics and femtosecond UV‐pump mid‐infrared‐probe spectroscopy is applied to explore its photoinduced primary processes in a time‐resolved fashion. Following optical excitation, a neutral CO2molecule is expelled from the complex within about 500 fs to generate a highly intriguing pentacoordinate ferrous dioxalate that carries a bent carbon dioxide radical anion ligand, that is, a reductively activated form of CO2, which is end‐on‐coordinated to the metal center by one of its two oxygen atoms.
二茂铁环丁二烯的飞秒化学
DOI: 10.1002/anie.201702987
发表时间: 2017
期刊: Angewandte Chemie
影响因子: --
作者:
B. Wezisla;J. Lindner;U. Das;A.C. Filippou;P. Vöhringer
通讯作者: P. Vöhringer
八面体铁(V)初级过程的光化学路线和超快中红外光谱的量子产率
DOI: 10.1021/ja5045133
发表时间: 2014
影响因子: 15
作者:
H. Vennekate;D. Schwarzer;J. Torres-Alacan;P. Vöhringer
通讯作者: P. Vöhringer
DOI: 10.1063/1.1732505
发表时间: 1962-01-01
影响因子: 4.4
作者:
FUJITA, J;NAKAMOTO, K;MARTELL, AE
通讯作者: MARTELL, AE
(二氧化碳)双(三环己基膦)镍的键合反应性关系:比较固态溶液核磁共振研究(磷-31、碳-13)作为诊断工具,以确定二氧化碳与镍的键合模式
DOI: --
发表时间: 1992
期刊:
影响因子: --
作者:
M. Aresta;R. Gobetto;E. Quaranta;I. Tommasi
通讯作者: I. Tommasi
DOI: 10.1016/0924-2031(92)87018-b
发表时间: 1992-10-08
影响因子: 2.5
作者:
FALK, M;MILLER, AG
通讯作者: MILLER, AG