Charged ligands for catalyst immobilisation and analysis
Charged ligands for catalyst immobilisation and analysis
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DOI：
10.1039/b800371h
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发表时间：
2008-01-01
影响因子：
4
通讯作者：
McIndoe, J. Scott
中科院分区：
文献类型：
--
作者：
Chisholm, Danielle M.;McIndoe, J. Scott
由于各种原因，有机金属化学中的配体在与结合位点不同的位置被功能化，包括修改电子和立体特征，改善溶解度，赋予手性，增加光谱“手柄”，促进电子转移过程或用于自旋标记。在这里，重点是特别催化活性的金属配合物，其中带电或高极性基团已附加到一个或多个配体的外围。在很大程度上，动机是为了改变它所附着的催化金属络合物的溶解度，以固定在另一相（水、离子液体等）和改进该过程的绿色证书。然而，其他用途也逐渐得到认可，例如，通过电喷雾电离质谱法辅助催化剂的原位分析。
Ligands involved in organometallic chemistry have been functionalised at locations somewhat removed from the binding site for diverse reasons, including modification of electronic and steric characteristics, improving solubility, to confer chirality, to add a spectroscopic "handle", to facilitate electron-transfer processes or for spin-labelling. Here, the focus is specifically on catalytically active metal complexes in which a charged or highly polar group has been appended to the periphery of one or more of the ligands. For the most part, the motivation has been to alter the solubility properties of the catalytic metal complex to which it is attached, for the purposes of immobilisation in another phase (water, ionic liquids, etc.) and improvement of the green credentials of the process. However, other uses are also becoming recognised, for example to aid in situ analysis of catalysts by electrospray ionisation mass spectrometry.