Table 2. Hydrogen Bonding Geometrical Parameters and C–H···π and C–O···π Interactions (Å, °) for Aa.
| D–H···A | D–H | H···A | D···A | <(D–H···A) (deg) |
|---|---|---|---|---|
| N2–H2A···O1i | 0.89 | 1.95 | 2.838 (4) | 173 |
| C18–H18···O1i | 0.93 | 2.50 | 3.305 (5) | 144 |
| N2–H2B···O2ii | 0.89 | 1.87 | 2.736 (4) | 165 |
| N2–H2C···O2iii | 0.89 | 1.92 | 2.776 (4) | 161 |
| C7–H7···O2iv | 0.93 | 2.51 | 3.289 (5) | 142 |
| C–H···π | C–H | H···π | C···π | <(C–H···π) (deg) |
|---|---|---|---|---|
| C16–H16A···Cg(1)v | 0.97 | 2.61 | 3.539 (5) | 71 |
| C–O···π | C–O | O···π | C···π | <(C–O···π) (deg) |
|---|---|---|---|---|
| C1–O1···Cg(2)vi | 1.230 (4) | 3.437 (3) | 3.723 (4) | 93.6 (2) |
a
Symmetry codes: (i) x + 1, y – 1, z; (ii) x + 1, −y + 2, z – 1/2; (iii) x + 1, −y + 1, z – 1/2; (iv) x, −y + 2, z – 1/2; (v) x, y – 1, z; and (vi) x, y + 1, z. Here, Cg(1) is the centroid of the phenyl ring of the cation (C17–C22) and Cg(2) is the phenyl ring of the anion (C2–C7).