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	hartrees
Energy at 0K	-10371.294644
Energy at 298.15K
HF Energy	-10371.294644
Nuclear repulsion energy	1483.106418

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	1602	1537	0.00	74.53	0.27	0.43
2	A_g	275	264	0.00	10.82	0.17	0.29
3	A_g	149	143	0.00	3.01	0.66	0.79
4	A_u	57	55	0.00	0.00	0.00	0.00
5	B_1u	651	625	32.32	0.00	0.00	0.00
6	B_1u	194	187	0.25	0.00	0.00	0.00
7	B_2g	497	477	0.00	0.70	0.75	0.86
8	B_2u	780	748	134.30	0.00	0.00	0.00
9	B_2u	120	115	0.17	0.00	0.00	0.00
10	B_3g	900	864	0.00	0.82	0.75	0.86
11	B_3g	216	207	0.00	2.74	0.75	0.86
12	B_3u	256	245	3.59	0.00	0.00	0.00

Atom	y (Å)	z (Å)
C1	0.000	0.670
C2	0.000	-0.670
Br3	1.580	1.685
Br4	-1.580	1.685
Br5	-1.580	-1.685
Br6	1.580	-1.685

	C1	C2	Br3	Br4	Br5	Br6
C1		1.3406	1.8781	1.8781	2.8364	2.8364
C2	1.3406		2.8364	2.8364	1.8781	1.8781
Br3	1.8781	2.8364		3.1609	4.6203	3.3699
Br4	1.8781	2.8364	3.1609		3.3699	4.6203
Br5	2.8364	1.8781	4.6203	3.3699		3.1609
Br6	2.8364	1.8781	3.3699	4.6203	3.1609

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	Br5	122.700	C1	C2	Br6	122.700
C2	C1	Br3	122.700	C2	C1	Br4	122.700
Br3	C1	Br4	114.599	Br5	C2	Br6	114.599

All results from a given calculation for C₂Br₄ (tetrabromoethene)

using model chemistry: HSEh1PBE/6-311G*

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	-0.240
2	C	-0.240
3	Br	0.120
4	Br	0.120
5	Br	0.120
6	Br	0.120

<r²>	803.613
(<r²>)^1/2	28.348

All results from a given calculation for C2Br4 (tetrabromoethene)

using model chemistry: HSEh1PBE/6-311G*

States and conformations

All results from a given calculation for C₂Br₄ (tetrabromoethene)