Comparison between the theoretical Raman frequencies of Bi₂O₂S. For each row, the Raman modes are arranged according to their frequencies. The unit of the phonon frequency is cm⁻¹.

This work	B2g	Ag	B3g	B1g	B1g	Ag	Ag	B2g	Ag	B1g	B3g	B1g
	9.5	13.9	65.2	67.9	83.0	170.6	285.2	287.7	367.8	450.6	452.4	519.1
Cheng38	B2g	Ag	B2g	Ag	Ag	Ag	B1g	B3g	B1g	B1g	B3g	B1g
	20.52	29.23	64.34	68.23	82.86	154.20	263.85	273.27	386.85	407.76	417.30	520.28