Kinetically‐Locked Metallomacrocycle for Host‐Guest Chemistry with Bulky Anions

Kinetically‐Locked Metallomacrocycle for Host‐Guest Chemistry with Bulky Anions
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用于大阴离子主客体化学的动力学锁定金属大环

DOI:
10.1002/ejic.202200592
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发表时间:
2022
影响因子:
2.3
通讯作者:
Tanaka Kentaro
Tanaka Kentaro
中科院分区:
化学3区
文献类型:
--
作者:
Kawano Shin‐ichiro;Harada Takahiro;Sasaki Ako;Tanaka Kentaro

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作为一种强大的大分子受体,通过Co(II)辅助的自组装和随后的金属中心氧化的组合,用具有9,10-二苯基蒽部分的大π面的双(β-二酮)配体合成了动力学锁定的三核Co(III)大环。X射线结构显示,大环具有大于300 μ 3的离散纳米腔,其被中间的三个蒽基板包围。 由于大环在每个金属离子上有三个阳离子中心和一个大的空腔,它可以作为四苯硼钠的客体受体。根据1H NMR滴定实验,结合常数估计为4.0×10− 2 M − 1,而在大环和1-金刚烷羧酸钾之间没有观察到相互作用。
As a robust and large molecular receptor, a kinetically‐locked trinuclear Co(III) macrocycle was synthesized with bis(β‐diketone) ligands having large π‐panels of 9,10‐diphenylanthracene moieties via a combination of Co(II)‐assisted self‐assembly and subsequent oxidation of the metal centers. The X‐ray structure revealed that the macrocycle had a discrete nanocavity of more than 300 Å3, which was surrounded by three anthracenyl panels in the middle. As the macrocycle has three cationic centres on each metal ion and a large cavity, it acts as a guest receptor for sodium tetraphenylborate. The binding constant was estimated to be 4.0×10−2M−1from1H NMR titration experiments, whereas no interaction was observed between the macrocycle and potassium 1‐adamantanecarboxylate.
DOI: 10.1002/cber.190103402206
发表时间: 1901
影响因子: 2.3
作者:
A. Werner
通讯作者: A. Werner
DOI: 10.1021/ja407951x
发表时间: 2013-10-02
影响因子: 15
作者:
Biedermann, Frank;Vendruscolo, Michele;Nau, Werner M.
通讯作者: Nau, Werner M.