Frequency regions (cm⁻¹)

Assignments

Ref.

440 - 560

700 - 780

900 - 940

980 - 1020

1070 - 1120

1200 - 1290

Vibration mode δ_ske(P-O-P)

Vibration mode u_Sym(P-O-P) in unit Q¹

Vibration mode u_Asym(P-O-P) in unit Q¹

Vibration mode u_Asym(P-O-P) in unit Q⁰

Vibration mode u_sym(PO₂)/u_Asym(PO₃) in units Q¹ + Q²

Vibration mode u_Asym(PO₂) in unit Q²

[17] [18]

[19]

[19]

[18]

[17]

[17] [18]