Mixing solutions of homoleptic cobalt(II) complexes [CoA2]2+ and [CoB2]2+ results in the establishment of a combinatorial library containing the heteroleptic complex [CoAB]2+. By using enantiomorphic ligands A and B the reactions may be followed by 1H NMR spectroscopy. Exchange reactions with 6-substituted ligands are slower than those with 5- and 4â²-substituted species.
混合同配位
钴(II)配合物[CoA2]2+和[CoB2]2+的溶液会形成一个包含异配位配合物[CoAB]2+的组合库。通过使用对映异构体
配体A和B,可以通过1H NMR光谱法跟踪这些反应。与6-取代
配体的交换反应较慢,而与5-和4'-取代
配体的交换反应则较快。