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	hartrees
Energy at 0K	-64.713079
Energy at 298.15K
HF Energy	-64.713079
Nuclear repulsion energy	98.456394

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	1559	1520	0.00	32.41	0.27	0.43
2	A_g	247	241	0.00	20.26	0.20	0.34
3	A_g	141	137	0.00	6.48	0.68	0.81
4	A_u	53	51	0.00	0.00	0.00	0.00
5	B_1u	587	572	33.13	0.00	0.00	0.00
6	B_1u	183	178	0.37	0.00	0.00	0.00
7	B_2g	487	475	0.00	2.50	0.75	0.86
8	B_2u	711	693	151.67	0.00	0.00	0.00
9	B_2u	113	110	0.24	0.00	0.00	0.00
10	B_3g	828	807	0.00	18.77	0.75	0.86
11	B_3g	199	194	0.00	6.51	0.75	0.86
12	B_3u	247	240	5.73	0.00	0.00	0.00

Atom	y (Å)	z (Å)
C1	0.000	0.679
C2	0.000	-0.679
Br3	1.634	1.745
Br4	-1.634	1.745
Br5	-1.634	-1.745
Br6	1.634	-1.745

	C1	C2	Br3	Br4	Br5	Br6
C1		1.3590	1.9508	1.9508	2.9238	2.9238
C2	1.3590		2.9238	2.9238	1.9508	1.9508
Br3	1.9508	2.9238		3.2681	4.7814	3.4901
Br4	1.9508	2.9238	3.2681		3.4901	4.7814
Br5	2.9238	1.9508	4.7814	3.4901		3.2681
Br6	2.9238	1.9508	3.4901	4.7814	3.2681

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	Br5	123.109	C1	C2	Br6	123.109
C2	C1	Br3	123.109	C2	C1	Br4	123.109
Br3	C1	Br4	113.782	Br5	C2	Br6	113.782

All results from a given calculation for C₂Br₄ (tetrabromoethene)

using model chemistry: B3LYP/CEP-121G

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	-0.470
2	C	-0.470
3	Br	0.235
4	Br	0.235
5	Br	0.235
6	Br	0.235

<r²>	206.934
(<r²>)^1/2	14.385

All results from a given calculation for C2Br4 (tetrabromoethene)

using model chemistry: B3LYP/CEP-121G

States and conformations

All results from a given calculation for C₂Br₄ (tetrabromoethene)