1. Tuning the size of supramolecular M4L4 tetrahedra by ligand connectivity
- Author
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Markus Albrecht, Yoshito Tobe, Kensuke Hasui, Gerhard Raabe, Kazukuni Tahara, Yuli Shang, and Verena Gossen
- Subjects
Catechol ,Stereochemistry ,Ligand ,Supramolecular chemistry ,chemistry.chemical_element ,Ion ,Inorganic Chemistry ,chemistry.chemical_compound ,Crystallography ,chemistry ,Proton NMR ,Tetrahedron ,Molecule ,Titanium - Abstract
Triangular triscatechol ligands are prepared in facile reaction sequences. The catechol units are either bound to the triangular backbone through their 3- or 4-position. With titanium(IV) ions, the ligands form metallosupramolecular M(4)L(4) tetrahedra which are characterized by ESI MS and proton NMR. Quantum-chemical calculations reveal that connectivity at the catechol in the 3-position results in highly condensed structures while attachment in the 4-position affords container molecules providing huge internal cavities.
- Published
- 2012
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