Table 1. Dihedral and torsion angles (°) for 2-methylbenzoic acid in the title co-crystal and in literature precedents.
| Compound | CH—C—C—OH | C6/CO2 | CSD Refcodeb | Reference |
|---|---|---|---|---|
| Parent compound | 1.7 (2) | 1.5 (5) | OTOLIC02 | Thakur & Desiraju (2008 ▸) |
| 1:1 Co-crystal with CF_1 | 7.5 (2) | 8.04 (9) | WICZUF | Day et al. (2009 ▸) |
| 1:1 Co-crystal with CF_2 | 4.25 (19) | 4.02 (12) | EXIBOD | Ebenezer et al. (2011 ▸) |
| 1:1 Co-crystal with CF_3 | 27.4 (3) | 27.8 (2) | EXIZIR | Ebenezer et al. (2011 ▸) |
| 1:1 Co-crystal with CF_4 | 23.0 (2) | 23.86 (8) | CEKLEL | Wales et al. (2012 ▸) |
| Title co-crystal | −27.92 (18) | 28.51 (8) | – | This work |
Notes: (a) Refer to Scheme 2 for the chemical structures of coformers CF_1–CF_4. (b) Groom & Allen (2014 ▸).