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	hartrees
Energy at 0K	-10322.874531
Energy at 298.15K
HF Energy	-10322.874531
Nuclear repulsion energy	1465.945642

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A_g	1671	1606	12.01
2	A_g	266	256	78.35
3	A_g	150	144	78.91
4	A_u	60	57	78.92
5	B_1u	644	619	13.51
6	B_1u	193	186	58.86
7	B_2g	597	574	12.12
8	B_2u	791	761	13.10
9	B_2u	124	119	68.22
10	B_3g	919	884	12.23
11	B_3g	226	217	72.58
12	B_3u	273	263	12.76

Atom	y (Å)	z (Å)
C1	0.000	0.663
C2	0.000	-0.663
Br3	1.605	1.698
Br4	-1.605	1.698
Br5	-1.605	-1.698
Br6	1.605	-1.698

	C1	C2	Br3	Br4	Br5	Br6
C1		1.3265	1.9095	1.9095	2.8552	2.8552
C2	1.3265		2.8552	2.8552	1.9095	1.9095
Br3	1.9095	2.8552		3.2095	4.6730	3.3965
Br4	1.9095	2.8552	3.2095		3.3965	4.6730
Br5	2.8552	1.9095	4.6730	3.3965		3.2095
Br6	2.8552	1.9095	3.3965	4.6730	3.2095

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	Br5	122.819	C1	C2	Br6	122.819
C2	C1	Br3	122.819	C2	C1	Br4	122.819
Br3	C1	Br4	114.361	Br5	C2	Br6	114.361

All results from a given calculation for C₂Br₄ (tetrabromoethene)

using model chemistry: B3PW91/3-21G

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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Number	Element	Mulliken
1	C	-0.555
2	C	-0.555
3	Br	0.277
4	Br	0.277
5	Br	0.277
6	Br	0.277

<r²>	820.143
(<r²>)^1/2	28.638

All results from a given calculation for C2Br4 (tetrabromoethene)

using model chemistry: B3PW91/3-21G

States and conformations

All results from a given calculation for C₂Br₄ (tetrabromoethene)