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	hartrees
Energy at 0K	-10315.857942
Energy at 298.15K
HF Energy	-10315.473322
Nuclear repulsion energy	1440.644906

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	A_g	1618	1569
2	A_g	247	240
3	A_g	146	142
4	A_u	58	57
5	B_1u	607	589
6	B_1u	186	181
7	B_2g	582	564
8	B_2u	750	728
9	B_2u	123	119
10	B_3g	897	870
11	B_3g	217	211
12	B_3u	266	258

Atom	y (Å)	z (Å)
C1	0.000	0.668
C2	0.000	-0.668
Br3	1.631	1.731
Br4	-1.631	1.731
Br5	-1.631	-1.731
Br6	1.631	-1.731

	C1	C2	Br3	Br4	Br5	Br6
C1		1.3367	1.9461	1.9461	2.9007	2.9007
C2	1.3367		2.9007	2.9007	1.9461	1.9461
Br3	1.9461	2.9007		3.2612	4.7556	3.4612
Br4	1.9461	2.9007	3.2612		3.4612	4.7556
Br5	2.9007	1.9461	4.7556	3.4612		3.2612
Br6	2.9007	1.9461	3.4612	4.7556	3.2612

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	Br5	123.082	C1	C2	Br6	123.082
C2	C1	Br3	123.082	C2	C1	Br4	123.082
Br3	C1	Br4	113.836	Br5	C2	Br6	113.836

All results from a given calculation for C₂Br₄ (tetrabromoethene)

using model chemistry: MP4/3-21G

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 C2Br4 (tetrabromoethene)

using model chemistry: MP4/3-21G

States and conformations

All results from a given calculation for C₂Br₄ (tetrabromoethene)