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	hartrees
Energy at 0K	-473.944882
Energy at 298.15K
HF Energy	-473.418355
Nuclear repulsion energy	125.065690

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A_g	688	653	0.00
2	A_g	346	328	0.00
3	B_1u	536	509	160.78
4	B_2u	248	235	114.47
5	B_3g	474	450	0.00
6	B_3u	64	61	115.08

Atom	y (Å)	z (Å)
Na1	0.000	1.970
Na2	0.000	-1.970
O3	0.799	0.000
O4	-0.799	0.000

	Na1	Na2	O3	O4
Na1		3.9401	2.1259	2.1259
Na2	3.9401		2.1259	2.1259
O3	2.1259	2.1259		1.5979
O4	2.1259	2.1259	1.5979

atom1	atom2	atom3	angle		atom1	atom2	atom3	angle
Na1	O3	Na2	135.851		Na1	O4	Na2	135.851
O3	Na1	O4	44.149		O3	Na2	O4	44.149

All results from a given calculation for Na₂O₂ (disodium dioxide)

using model chemistry: MP2/cc-pVTZ

States and conformations

	Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for Na2O2 (disodium dioxide)

using model chemistry: MP2/cc-pVTZ

States and conformations

All results from a given calculation for Na₂O₂ (disodium dioxide)