Self‐Assembly of an [M8L24]16+ Intertwined Cube and a Giant [M12L16]24+ Orthobicupola

Baby Sainaba, Arppitha; Venkateswarulu, Mangili; Bhandari, Pallab; Clegg, Jack K.; Sarathi Mukherjee, Partha

doi:10.1002/anie.202315572

Cited by 9 publications

(1 citation statement)

References 91 publications

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“…Over the past few decades, researchers have successfully synthesized synthetic mechanically interlocked molecules (MIMs) like rotaxanes, molecular knots, catenanes, links, Star of David catenanes, Borromean rings, and others, using specialized building blocks. Unlike metal–organic cages, MIMs offer promising avenues for application.…”

Section: Introductionmentioning

confidence: 99%

The Topological Transformation of Trefoil Knots to Solomon Links via Diels–Alder Click Reaction

Tang,

Zhang,

Gao

et al. 2024

J. Am. Chem. Soc.

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The quest for more efficient, user-friendly, and less wasteful topological transformations remains a significant challenge in the realm of postassembly modifications. In this article, high yields of two molecular trefoil knots (Rh-1, Ir-1) were obtained using ligand 3,6-bis(3-(pyridin-4-yl)phenyl)-1,2,4,5-tetrazine (L1) with reactive tetrazine units and binuclear half-sandwich organometallic units [Cp* 2 M 2 (μ-TPPHZ)(OTf) 2 ](OTf) 2 (Rh-B, M = Rh III ; Ir-B, M = Ir III ). 2,5-Norbornadiene was used as an inducer of the Diels−Alder click reaction to modulate rapidly and efficiently the transformation of Trefoil knots to Solomon links. However, the key to achieving this topological structural change is the subtle increase in site steric of the pyridazine fragments (L2), which allows the molecular structures to spread and bend in three-dimensional space, as confirmed by single-crystal X-ray diffraction, ESI-TOF/MS, elementary analysis and detailed solution-state NMR techniques.

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Section: Introductionmentioning

confidence: 99%

The Topological Transformation of Trefoil Knots to Solomon Links via Diels–Alder Click Reaction

Tang,

Zhang,

Gao

et al. 2024

J. Am. Chem. Soc.

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Ultra‐High Metal‐Ion Selectivity Induced by Intramolecular Cation‐π Interactions for the One‐Pot Synthesis of Precise Heterometallic Architectures

Shi,

Li,

et al. 2024

Angewandte Chemie

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Heterometallic supramolecules, known for their unique synergistic effects, have shown broad applications in photochemistry, host‐guest chemistry, and catalysis. However, there are great challenges to precisely construct heterometallic supramolecules rather than statistical mixture, due to the limited metal‐ions selectivity of coordination units. Especially, heterometallic architectures precisely encoding with different metal ions usually fail to obtain in one‐pot method when only one type of coordinated motif exists due to its poor metal‐ion selectivity. Herein, we proposed an effective intramolecular cation‐π (ICπ) strategy and successfully constructed the heterometallic supramolecule Zn2Cu4L34 by one‐pot self‐assembly of tritopic terpyridyl ligand L3 with Zn(II) and Cu(II), following the clear self‐assembly mechanism that only thermodynamic dimers ZnL12 and Cu2L22 were constructed with model ligands L1, L2, Zn(II) and Cu(II) with perfect self‐sorting and ultra‐high metal‐selectivity feature. The successful construction of the heterometallic supramolecule Zn2Cu4L34, encoding the definite sequence of metal ions Zn(II) and Cu(II) in one‐pot method, will offer a novel approach to precisely construct heterometallic architectures.

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Using a New Pt(II) Source to Make Pt(II) Lantern‐Shaped Cages, Including Low‐Symmetry, Heteroleptic, and Multicavity Examples

Avery,

Gardiner,

Preston

2024

Angewandte Chemie

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Current synthetic methods towards Pt(II) lantern‐shaped cages involve the use of dry solvent, inert atmosphere, lengthy reaction times, and highly variable yields if isolated. Starting materials such as [Pt(CH3CN)4](BF4)2 suffer from a poor shelf‐life, reducing the synthetic accessibility of various Pt(II) architectures. A new Pt(II) source (with varied counterions), [Pt(3‐ClPy)4](X)2 (3‐ClPy = 3‐chloropyridine, X = BF4‐, OTf‐, NO3‐), is developed and characterised, showing greatly enhanced shelf‐life characteristics under ambient atmospheric conditions. Using this starting material, the assembly of Pt(II) lantern‐shaped cages was completed in as little as 1.5 hours with wet solvent and ambient atmosphere. The first examples of low‐symmetry, heteroleptic and multicavity Pt(II) lantern‐shaped cages are reported using this approach. Attempts towards an M6L8 octahedron using a tritopic ligand instead generate an interesting M2L4 cage with unbound pyridyl arms. Ligands and cages are characterised by NMR spectroscopy, IR spectroscopy, mass spectrometry, and X‐ray crystallography in some cases.

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Self‐Assembly of an [M₈L2₄]¹⁶⁺ Intertwined Cube and a Giant [M₁₂L1₆]²⁴⁺ Orthobicupola

Cited by 9 publications

References 91 publications

The Topological Transformation of Trefoil Knots to Solomon Links via Diels–Alder Click Reaction

The Topological Transformation of Trefoil Knots to Solomon Links via Diels–Alder Click Reaction

Ultra‐High Metal‐Ion Selectivity Induced by Intramolecular Cation‐π Interactions for the One‐Pot Synthesis of Precise Heterometallic Architectures

Using a New Pt(II) Source to Make Pt(II) Lantern‐Shaped Cages, Including Low‐Symmetry, Heteroleptic, and Multicavity Examples

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