Table 6. IR frequency (cm1) of the acemetacin cocrystals/salts.
| NH stretch | CO stretch | CO stretch | CO stretch (coformer) | |
|---|---|---|---|---|
| ACM | 1751.2, 1726.5, 1665.8 | 1229.5 | ||
| ACMNAM | 3403.4, 3304.9, 3216.1 | 1735.2, 1669.0 | 1226.2 | 1698.3, 1681.0 |
| ACMINA | 3395.1, 3311.3, 3264.5, 3208.7 | 1727.0, 1672.6 | 1227.8, 1213.2 | 1677.2 |
| ACMPAM | 3445.6, 3309.4 | 1741.4, 1717.9, 1667.8 | 1232.6 | 1683.3 |
| ACMCPR | 3445.4 (broad) | 1738.3, 1668.9 | 1234.1 | 1636.0 (broad) |
| ACMPABA | 3464.7, 3402.2, 3332.9, 3227.2 | 1746.4, 1716.1, 1643.7 | 1234.5, 1216.4 | 1687.3, 1662.7 |
| ACMPPZ | 3423.0 (broad) | 1721.9, 1679.0 | 1219.6 |