Preston Dan, Sutton Joshua J, Gordon Keith C, Crowley James D
Department of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand.
MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand.
Angew Chem Int Ed Engl. 2018 Jul 9;57(28):8659-8663. doi: 10.1002/anie.201804745. Epub 2018 Jun 7.
We report a simple, low-symmetry 2-(1-(pyridine-4-methyl)-1H-1,2,3-triazol-4-yl)pyridine ligand that has both monodentate and bidentate binding sites. With platinum(II) and/or palladium(II) ions, two examples of a new nona-nuclear metallo-assembly have been accessed. These complexes were characterized by NMR spectroscopy, electrospray mass spectrometry (ESI-MS), and in key cases, X-ray crystallography. The cages possess three clefts comprised of planar cationic panels. This structural feature enables the binding of planar aromatic guests such as anthracene. More interestingly, the heterometallic assembly was able to catalyze the light-induced [4+2] cycloaddition of anthracene with singlet oxygen.
我们报道了一种简单的、低对称性的2-(1-(吡啶-4-甲基)-1H-1,2,3-三唑-4-基)吡啶配体，它具有单齿和双齿结合位点。与铂(II)和/或钯(II)离子反应，得到了一种新型九核金属组装体的两个实例。这些配合物通过核磁共振光谱、电喷雾质谱(ESI-MS)进行了表征，在关键情况下还通过X射线晶体学进行了表征。这些笼状结构具有由平面阳离子面板组成的三个裂缝。这一结构特征使得平面芳香族客体如蒽能够结合。更有趣的是，这种异金属组装体能够催化蒽与单线态氧的光诱导[4+2]环加成反应。
