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	hartrees
Energy at 0K	-10364.252873
Energy at 298.15K
HF Energy	-10364.252873
Nuclear repulsion energy	1491.870067

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)	Raman Act (Å⁴/u)	Dep P	Dep U
1	A_g	1634	1551	0.00	58.95	0.30	0.46
2	A_g	277	263	0.00	10.90	0.14	0.24
3	A_g	150	143	0.00	2.51	0.63	0.78
4	A_u	61	58	0.00	0.00	0.00	0.00
5	B_1u	653	620	33.30	0.00	0.00	0.00
6	B_1u	195	185	0.12	0.00	0.00	0.00
7	B_2g	513	487	0.00	1.36	0.75	0.86
8	B_2u	790	750	125.21	0.00	0.00	0.00
9	B_2u	122	116	0.17	0.00	0.00	0.00
10	B_3g	903	857	0.00	0.46	0.75	0.86
11	B_3g	220	209	0.00	2.55	0.75	0.86
12	B_3u	253	240	1.94	0.00	0.00	0.00

Atom	y (Å)	z (Å)
C1	0.000	0.669
C2	0.000	-0.669
Br3	1.575	1.671
Br4	-1.575	1.671
Br5	-1.575	-1.671
Br6	1.575	-1.671

	C1	C2	Br3	Br4	Br5	Br6
C1		1.3387	1.8663	1.8663	2.8210	2.8210
C2	1.3387		2.8210	2.8210	1.8663	1.8663
Br3	1.8663	2.8210		3.1491	4.5923	3.3426
Br4	1.8663	2.8210	3.1491		3.3426	4.5923
Br5	2.8210	1.8663	4.5923	3.3426		3.1491
Br6	2.8210	1.8663	3.3426	4.5923	3.1491

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	Br5	122.470	C1	C2	Br6	122.470
C2	C1	Br3	122.470	C2	C1	Br4	122.470
Br3	C1	Br4	115.060	Br5	C2	Br6	115.060

All results from a given calculation for C₂Br₄ (tetrabromoethene)

using model chemistry: B1B95/6-31G*

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	-0.013
2	C	-0.013
3	Br	0.007
4	Br	0.007
5	Br	0.007
6	Br	0.007

<r²>	793.763
(<r²>)^1/2	28.174

All results from a given calculation for C2Br4 (tetrabromoethene)

using model chemistry: B1B95/6-31G*

States and conformations

All results from a given calculation for C₂Br₄ (tetrabromoethene)