Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 18, Issue 46, Pages 14867-14874Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201202313
Keywords
boronic acids; dative bonds; macrocycles; polymers; supramolecular chemistry
Categories
Funding
- Swiss National Science Foundation
- EPFL
- TUBITAK (Scientific and Technological Research Council of Turkey)
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Multicomponent reactions between 1,4-benzenediboronic acid, catechol, and different pyridyl ligands are reported. The condensation of 1,4-benzenediboronic acid with catechol gives 1,4-bis(benzodioxaborole)benzene. Upon crystallization, the ester aggregates with the N-donor ligands through dative B-N bonds. Depending on the nature of the pyridyl ligand, molecularly defined macrocycles or polymeric structures are obtained. 1D polymers are formed with 4,4-bipyridine and 1,2-di(4-pyridyl)ethylene, whereas a 2D network is obtained with the tetradentate ligand tetra(4-pyridylphenyl)ethylene. These results highlight the utility of dative B-N bonds in structural supramolecular chemistry and crystal engineering.
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