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	hartrees
Energy at 0K	-128.145898
Energy at 298.15K
HF Energy	-128.145898
Nuclear repulsion energy	133.408899

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	1771	1594	0.00	48.16	0.53	0.69
2	A_g	267	240	0.00	26.16	0.19	0.32
3	A_g	155	139	0.00	6.05	0.61	0.76
4	A_u	60	54	0.00	0.00	0.00	0.00
5	B_1u	645	580	22.64	0.00	0.00	0.00
6	B_1u	200	180	0.12	0.00	0.00	0.00
7	B_2g	597	538	0.00	4.09	0.75	0.86
8	B_2u	779	701	82.44	0.00	0.00	0.00
9	B_2u	125	113	0.27	0.00	0.00	0.00
10	B_3g	929	836	0.00	74.10	0.75	0.86
11	B_3g	222	200	0.00	10.00	0.75	0.86
12	B_3u	280	253	4.46	0.00	0.00	0.00

Atom	y (Å)	z (Å)
C1	0.000	0.663
C2	0.000	-0.663
Br3	1.607	1.730
Br4	-1.607	1.730
Br5	-1.607	-1.730
Br6	1.607	-1.730

	C1	C2	Br3	Br4	Br5	Br6
C1		1.3262	1.9288	1.9288	2.8823	2.8823
C2	1.3262		2.8823	2.8823	1.9288	1.9288
Br3	1.9288	2.8823		3.2143	4.7220	3.4592
Br4	1.9288	2.8823	3.2143		3.4592	4.7220
Br5	2.8823	1.9288	4.7220	3.4592		3.2143
Br6	2.8823	1.9288	3.4592	4.7220	3.2143

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	Br5	123.569	C1	C2	Br6	123.569
C2	C1	Br3	123.569	C2	C1	Br4	123.569
Br3	C1	Br4	112.862	Br5	C2	Br6	112.862

All results from a given calculation for C₂Br₄ (tetrabromoethene)

using model chemistry: HF/SDD

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	-0.390
2	C	-0.390
3	Br	0.195
4	Br	0.195
5	Br	0.195
6	Br	0.195

<r²>	205.650
(<r²>)^1/2	14.341

All results from a given calculation for C2Br4 (tetrabromoethene)

using model chemistry: HF/SDD

States and conformations

All results from a given calculation for C₂Br₄ (tetrabromoethene)