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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Cu(ii) templated formation of [n]pseudorotaxanes (n=2, 3, 4) using a tris-amino ether macrocyclic wheel and multidentate axles
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Cu(ii) templated formation of [n]pseudorotaxanes (n=2, 3, 4) using a tris-amino ether macrocyclic wheel and multidentate axles

机译:Cu(ii)使用Tris-氨基醚宏环和多型轴的模板形成的[n]伪横向(n = 2,3,4)

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摘要

A tris-amine and oxy-ether functionalised macrocyclic wheel (NaphMC) and various phenanthroline based multidentate axles (L1, L2 and L3) are utilised for the formation of [n]pseudorotaxanes (n = 2, 3, 4) in high yields via Cu(ii) temptation and - stacking interactions. The systematic development of threaded supramolecular architectures i.e. [2]pseudorotaxane {[2]CuPR(ClO4)(2)}, [3]pseudorotaxane {[3]CuPR(ClO4)(4)} and [4]pseudorotaxane {[4]CuPR(ClO4)(6)} from bidentate L1, linear tetradentate L2 and tripodal hexadentate L3 respectively is described. All the [n]pseudorotaxanes are well characterized by several spectroscopy and other experimental techniques such as electrospray ionization mass spectrometry (ESI-MS), isothermal titration calorimetric (ITC) study, UV/Vis, EPR, IR and elemental analysis. Moreover, the single crystal X-ray analysis of [2]pseudorotaxane confirmed the threading of L1 in the cavity of NaphMC, resulting in the formation of a penta-coordinated Cu(ii) ternary complex. ITC studies revealed the order of binding constant values for the formation of [n]pseudorotaxanes from the NaphMC-Cu(ii) complex and multidentate axles as L3 > L2 > L1. Finally, we have also shown the ability of Ni(ii) to act as a metal template in the formation of [n]pseudorotaxanes.
机译:三胺和氧醚官能化的大环(萘甲酰基)和各种菲咯啉的多鸟轴(L1,L2和L3)用于形成高产率的[n]伪横向(n = 2,3,4)铜(ii)诱惑和堆叠互动。螺纹超分子架构的系统发展,即[2]伪甲烷{[2] CUPR(CLO 4)(2)},[3]伪甲烷{[3] CUPR(CLO 4)(4)}和[4]假素{[4]从双齿L1,分别描述了Cupr(ClO4)(6)},分别描述了线性四齿L2和三码头六次旋转物L3。所有的[n]伪横向均具有很好的特征,其特征在于几种光谱学和其他实验技术,例如电喷雾电离质谱(ESI-MS),等温滴定量热(ITC)研究,UV / VI,EPR,IR和元素分析。此外,[2]伪甲烷的单晶X射线分析证实了萘曲面的腔体中L1的螺纹,导致形成Penta配位Cu(II)三元复合物。 ITC研究揭示了从萘普满 - Cu(II)复合物和多闭轴形成[n]伪横向的结合常数值的顺序,如L3> L2> L1。最后,我们还表明了Ni(ii)在形成[n]伪横向时作为金属模板的能力。

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