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	hartrees
Energy at 0K	-10322.953340
Energy at 298.15K
HF Energy	-10322.953340
Nuclear repulsion energy	1457.341219

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	1658	1599	0.00	20.89	0.17	0.29
2	A_g	259	250	0.00	14.01	0.19	0.33
3	A_g	149	143	0.00	4.69	0.69	0.82
4	A_u	58	56	0.00	0.00	0.00	0.00
5	B_1u	628	606	32.04	0.00	0.00	0.00
6	B_1u	190	183	0.09	0.00	0.00	0.00
7	B_2g	586	565	0.00	3.44	0.75	0.86
8	B_2u	763	736	128.60	0.00	0.00	0.00
9	B_2u	123	119	0.28	0.00	0.00	0.00
10	B_3g	898	866	0.00	12.91	0.75	0.86
11	B_3g	221	213	0.00	4.14	0.75	0.86
12	B_3u	268	258	4.74	0.00	0.00	0.00

Atom	y (Å)	z (Å)
C1	0.000	0.663
C2	0.000	-0.663
Br3	1.613	1.710
Br4	-1.613	1.710
Br5	-1.613	-1.710
Br6	1.613	-1.710

	C1	C2	Br3	Br4	Br5	Br6
C1		1.3256	1.9229	1.9229	2.8689	2.8689
C2	1.3256		2.8689	2.8689	1.9229	1.9229
Br3	1.9229	2.8689		3.2256	4.7009	3.4196
Br4	1.9229	2.8689	3.2256		3.4196	4.7009
Br5	2.8689	1.9229	4.7009	3.4196		3.2256
Br6	2.8689	1.9229	3.4196	4.7009	3.2256

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	Br5	122.990	C1	C2	Br6	122.990
C2	C1	Br3	122.990	C2	C1	Br4	122.990
Br3	C1	Br4	114.019	Br5	C2	Br6	114.019

All results from a given calculation for C₂Br₄ (tetrabromoethene)

using model chemistry: B3LYP/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	-0.516
2	C	-0.516
3	Br	0.258
4	Br	0.258
5	Br	0.258
6	Br	0.258

<r²>	829.323
(<r²>)^1/2	28.798

All results from a given calculation for C2Br4 (tetrabromoethene)

using model chemistry: B3LYP/3-21G

States and conformations

All results from a given calculation for C₂Br₄ (tetrabromoethene)