A Nona-nuclear Heterometallic Pd3 Pt6 "Donut"-Shaped Cage: Molecular Recognition and Photocatalysis

Dan Preston; Joshua J Sutton; Keith C Gordon; James D Crowley

doi:10.1002/anie.201804745

A Nona-nuclear Heterometallic Pd₃ Pt₆ "Donut"-Shaped Cage: Molecular Recognition and Photocatalysis

Angew Chem Int Ed Engl. 2018 Jul 9;57(28):8659-8663. doi: 10.1002/anie.201804745. Epub 2018 Jun 7.

Authors

Dan Preston¹, Joshua J Sutton^{1

2}, Keith C Gordon^{1

2}, James D Crowley^{1

2}

Affiliations

¹ Department of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand.
² MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand.

PMID: 29774643
DOI: 10.1002/anie.201804745

Abstract

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.

Keywords: heterometallic compounds; host-guest chemistry; metallo-cages; photocatalysis; self-assembly.

Publication types

Research Support, Non-U.S. Gov't