Acenaphtho[1,2‐ d ][1,2,3]triazole and Its Kuratowski Complex: A π‐Extended Tecton for Supramolecular and Coordinative Self‐Assembly
| Autor: | Daniel Matuszczyk, Björn Bredenkötter, Tadeusz Lis, Dirk Volkmer, Marcin Stępień, Maryana Kraft, Georg Eickerling, Katharina Knippen |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Models
Molecular chemistry.chemical_classification Magnetic Resonance Spectroscopy Organic Chemistry Triazole Supramolecular chemistry General Chemistry Nuclear magnetic resonance spectroscopy Crystal structure Triazoles Chromophore Ligands Catalysis Coordination complex chemistry.chemical_compound Crystallography chemistry ddc:540 Self-assembly Derivative (chemistry) |
| Zdroj: | Chemistry – A European Journal. 28 |
| ISSN: | 1521-3765 0947-6539 |
| Popis: | π-Extended acenaphtho[1,2-d][1,2,3]triazoles, the unsubstituted Anta-H and its di-tert-butyl derivative Dibanta-H, as well as 5,6,7,8-tetrahydro-1H-naphtho[2,3-d][1,2,3]triazole Cybta-H were obtained in concise syntheses. In the solid state, Dibanta-H forms an unprecedented hydrogen-bonded cyclic tetrad, stabilized by dispersion interactions of the bulky tBu substituents, whereas a cyclic triad was found in the crystal structure of Anta-H. These cyclic assemblies form infinite slipped stacks in the crystals. Evidence for analogous hydrogen-bonded self-assembly in solution was provided by low-temperature NMR spectroscopy and computational analyses. Kuratowski-type pentanuclear complexes [Zn5 Cl4 (Dibanta)6 ] and [Zn5 Cl4 (Cybta)6 ] were prepared from the respective triazoles. In the Dibanta complexes, the π-aromatic surfaces of the ligands extend from the edges of the tetrahedral Zn5 core, yielding an enlarged structure with significant internal molecular free volume and red-shifted fluorescence. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text