Table 4 Parameter values of benzene ring positional relationship in stable closed conformers for M(DB24C8) (M = Ca2+, Na+, Ag+, K+, Rb+, Cs+) and benzene dimer
From: Cryogenic ion mobility-mass spectrometry for the study of conformations of host-guest complexes
Complex | \(r_{\mathrm{c}}\) / Å | θ / deg | φ / deg |
|---|---|---|---|
Ca2+(DB24C8) | 5.22 | 33.9 | 19.5, 18.8 |
Na+(DB24C8) | 4.88 | 15.3 | 33.2, 47.8 |
Ag+(DB24C8) | 4.91 | 19.4 | 32.0, 51.3 |
K+(DB24C8) | 3.83 | 0.1 | 63.2 |
Rb+(DB24C8) | 3.89 | 1.85 | 63.9 |
Cs+(DB24C8) | 4.15 | 13.8 | 64.6, 51.3 |
Benzene dimer [42] | 3.85 | 0.0 | 65 |