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Preparation of copper(I) pseudo-rotaxanes from bis-phosphine ligands

机译:由双膦配体制备铜(I)拟轮烷

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摘要

The preparation of heteroleptic Cu complexes from various 2,9-disubstituted-1,10-phenanthrolines(phen) and different bis-phosphine(PP) ligands was investigated. These heteroleptic complexes are found to be stable in CH _2Cl _2 solutions and no detectable ligand exchange reactions could be detected. The results also show that the CuI-mediated threading of all the bis-phosphine ligands through the macrocycle is effective. The X-ray crystal structure analysis of BF _4 proves the threading of the POP moiety through the macrocyclic phenanthroline ligand. The intramolecular face-to-face p p interaction between one phenyl ring of the POP ligand and the phenanthroline moiety induces a significant rocking of the POP ligand. The results also show that formation of the homoleptic bisphenanthroline Cu complex is prevented by the macrocyclic nature of the phenanthroline ligand.
机译:研究了由2,9-二取代-1,10-菲咯啉(phen)和不同的双膦(PP)配体制备的杂铜配合物。发现这些杂合配合物在CH _2Cl _2溶液中稳定,并且未检测到可检测到的配体交换反应。结果还表明,CuI介导的所有双膦配体穿过大环是有效的。 BF _4的X射线晶体结构分析证明POP部分穿过大环菲咯啉配体。 POP配体的一个苯环与菲咯啉部分之间的分子内面对面p p相互作用引起POP配体的明显摇动。结果还表明,菲咯啉配体的大环性质阻止了均双酚菲啉铜配合物的形成。

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