Abstract
The azide complex [Na(15-crown-5)]2[L(N3) 2] has been synthesized. X-ray single-crystal diffraction analysis revealed that two orthogonally oriented azide anions are encapsulated in one receptor, each by two opposite urea edges of the square tetreurea ligand through N(urea) - H-N(azide) hydrogen bonding. UV-vis titration confirmed the 1:2 (host/guest) binding mode in solution with slight bathochromic shifts compared to the ligand.
Original language | English |
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Pages (from-to) | 1508-1510 |
Number of pages | 3 |
Journal | Inorganic Chemistry Communications |
Volume | 14 |
Issue number | 9 |
DOIs | |
Publication status | Published - Sept 2011 |
Externally published | Yes |
Keywords
- Anion binding
- Azide encapsulation
- NH- N hydrogen bonding
- Tetraurea receptors