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Infrared absorption bands at ClAp600, 800, and 1000.
| Absorption Region (cm−1) | Intensity | Designation |
|---|---|---|
| 3400 | Strong | stretch OH–Cl |
| 2920 | Weak | group stretching C–H |
| 1636 | Medium | ٧1 symmetric stretching CO32− |
| 1088, 1046, and 959 | Strong | ٧3 anti-symmetric stretch PO43− |
| 605, 565, and 473 | Strong | ٧1 symmetric stretching PO43− |
