Host-Guest Chemistry in the Hexanuclear (Arene)ruthenium Metalla-Prismatic Cage [Ru6(p-cymene)6(tpt)2(dhnq)3]6+
Host-Guest Chemistry in the Hexanuclear (Arene)ruthenium Metalla-Prismatic Cage [Ru6(p-cymene)6(tpt)2(dhnq)3]6+
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DOI：
10.1002/ejic.200900649
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发表时间：
2009-11-01
影响因子：
2.3
通讯作者：
Therrien, Bruno
中科院分区：
文献类型：
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作者：
Barry, Nicolas P. E.;Therrien, Bruno
一种大的阳离子三角形金属棱柱[Ru-6（p-cymene）（6）（tpt）（2）（dhnq）（3）]（6+）（[1]（6+）），其包含由5，8-二羟基-1，4-萘醌（dhnq）配体桥接并由两个2，4，6-三（吡啶-4-基）-1，3，5-三嗪（tpt）亚基连接的（p-cymene）钌结构单元，允许包封各种客体分子。这种阳离子笼，作为其三氟甲磺酸盐分离，具有小于其空腔的门户尺寸，从而允许客体分子的永久和暂时包封。本文研究了[1]（6+）在平面分子[菲，芘，（芘-1-基甲基）胺，Pt（acac）（2），苯并菲]。通过NMR光谱法估计以下主体-客体体系的缔合稳定常数（K-a）：[芘亚类1]（6+）、[菲亚类1]（6+）和[（芘-1-基甲基）胺亚类1]（6+）。对于这些主体-客体系统（[D-3]乙腈，21 ℃），发现所有K-a值均大于2.4 x 10（4）M-1。另外两个合成的配合物，[Pt-（acac）（2）subset of 1]（6+）和[triphenylene subset of 1]（6+），被证明仅作为carceplex。((C)Wiley-VCH Verlag GmbH & Co. KGaA，69451魏因海姆，德国，2009）
A large cationic triangular metalla-prism, [Ru-6(p-cymene)(6)(tpt)(2)(dhnq)(3)](6+) ([1](6+)), incorporating (p-cymene)ruthenium building blocks, bridged by 5,8-dihydroxy-1,4-naphthoquinonato (dhnq) ligands, and connected by two 2,4,6-tri(pyridin-4-yl)-1,3,5-triazine (tpt) subunits, allows encapsulation of various guest molecules. This cationic cage, isolated as its triflate salt, possesses a portal size smaller than its cavity, thus allowing both, permanent and temporary encapsulation of guest molecules. The host-guest proper-ties of [1](6+) have been studied in solution in the presence of planar molecules [phenanthrene, pyrene, (pyren-1-ylmethyl)amine, Pt(acac)(2), triphenylene], The stability constant of association (K-a) was estimated by NMR spectroscopy for the following host-guest systems: [pyrene subset of 1](6+), [phenanthrene subset of 1](6+) and [(pyren-1-ylmethyl)amine subset of 1](6+). All K-a values were found to be larger than 2.4 x 10(4) M-1 for these host-guest systems ([D-3]acetonitrile, 21 degrees C). The other two synthesised complexes, [Pt-(acac)(2)subset of 1](6+) and [triphenylene subset of 1](6+), were shown to act as carceplexes only. ((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)