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Self-Assembly, Structural Transformation, and Guest-Binding Properties of Supramolecular Assemblies with Triangular Metal-Metal Bonded Units
- Source :
- Journal of the American Chemical Society. 142(5)
- Publication Year :
- 2020
-
Abstract
- The properties of supramolecular structures are highly dependent on their metal-centered building blocks and organic linkers, thus the search for novel systems will lead to new functions and applications for these unique assemblies. Here, two discrete triangular trimetallic sandwich building blocks were developed to construct supramolecular assemblies through coordination-driven self-assembly with organosulfur ligands. A series of tubelike (Tr2Pd3)4L6 assemblies (Tr = cycloheptatrienyl ring) were obtained from a discrete triangular tripalladium sandwich complex with bifunctional organosulfur ligands. By replacing the metal centers of the platinum analogue, the self-assembly process resulted in the clean formation of (Tr2Pt3)2L3 triple helicates instead of tubelike species. The trimetallic sandwich building blocks were also shown to form face-capped (Tr2M3)4L4 (M = Pd or Pt) tetrahedral cages when trifunctional organosulfur ligands were used. The supramolecular assemblies were comprehensively analyzed by X-ray crystallography. A metal-cluster-induced structural transformation between (Tr2Pd3)4L4 tubes and (Tr2Pt3)2L3 triple helicates was observed. Furthermore, the face-capped (Tr2Pd3)4L4 cage possesses a tetrahedral cavity allowing the encapsulation of a series of guests.
- Subjects :
- Supramolecular chemistry
chemistry.chemical_element
General Chemistry
010402 general chemistry
Ring (chemistry)
01 natural sciences
Biochemistry
Catalysis
0104 chemical sciences
Metal
Crystallography
chemistry.chemical_compound
Colloid and Surface Chemistry
chemistry
visual_art
visual_art.visual_art_medium
Tetrahedron
Self-assembly
Platinum
Bifunctional
Organosulfur compounds
Subjects
Details
- ISSN :
- 15205126
- Volume :
- 142
- Issue :
- 5
- Database :
- OpenAIRE
- Journal :
- Journal of the American Chemical Society
- Accession number :
- edsair.doi.dedup.....569596998653495c83a60f9e326aea67