A Nona-nuclear Heterometallic Pd3Pt6 “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 Pd₃Pt₆ “Donut”-Shaped Cage: Molecular Recognition and Photocatalysis

Dan Preston^*, Joshua J. Sutton, Keith C. Gordon, James D. Crowley

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

105 Citations (Scopus)

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.

Original language	English
Pages (from-to)	8659-8663
Number of pages	5
Journal	Angewandte Chemie - International Edition
Volume	57
Issue number	28
DOIs	https://doi.org/10.1002/anie.201804745
Publication status	Published - 9 Jul 2018
Externally published	Yes

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title = "A Nona-nuclear Heterometallic Pd3Pt6 “Donut”-Shaped Cage: Molecular Recognition and Photocatalysis",

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",

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T2 - Molecular Recognition and Photocatalysis

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AU - Gordon, Keith C.

AU - Crowley, James D.

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N2 - 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.

AB - 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.

KW - heterometallic compounds

KW - host–guest chemistry

KW - metallo-cages

KW - photocatalysis

KW - self-assembly

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A Nona-nuclear Heterometallic Pd₃Pt₆ “Donut”-Shaped Cage: Molecular Recognition and Photocatalysis

Abstract

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