| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1228930 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2016 | 5 Pages |
•Strong Charge Transfer band appeared in UV region due to H-bonding of crown-axel adducts.•Least crowded axel forms most stable adducts.•Sterically hindered crown forms only one H-bond with axel.•No. of H-bonding determine the stability of adducts.•Both isosbestic and isoemissive are formed.
This is the first report of charge transfer band for crown-axel H-bonding interaction in acetonitrile medium. Monte Carlo simulation established external association of small cavity crown with BBIM-propane dication axels. Resonance energy, binding constant and ratiometric detection of association of xanthenocrown-5 (1) and bis-napthalenocrown-6 (2) with bis-(benzimidazolium)propane borontetrafluoride (3a–3d) in acetonitrile determined the effect of steric factor towards association.
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