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	hartrees
Energy at 0K	-127.317762
Energy at 298.15K
HF Energy	-127.317762
Nuclear repulsion energy	132.687162

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	1767	1590	0.00	33.47	0.58	0.73
2	A_g	260	234	0.00	27.25	0.21	0.35
3	A_g	154	138	0.00	6.61	0.62	0.77
4	A_u	59	54	0.00	0.00	0.00	0.00
5	B_1u	626	563	22.96	0.00	0.00	0.00
6	B_1u	199	179	0.04	0.00	0.00	0.00
7	B_2g	583	525	0.00	3.74	0.75	0.86
8	B_2u	752	677	71.81	0.00	0.00	0.00
9	B_2u	125	112	0.38	0.00	0.00	0.00
10	B_3g	895	805	0.00	74.75	0.75	0.86
11	B_3g	220	198	0.00	12.05	0.75	0.86
12	B_3u	275	248	3.33	0.00	0.00	0.00

Atom	y (Å)	z (Å)
C1	0.000	0.663
C2	0.000	-0.663
Br3	1.620	1.737
Br4	-1.620	1.737
Br5	-1.620	-1.737
Br6	1.620	-1.737

	C1	C2	Br3	Br4	Br5	Br6
C1		1.3253	1.9435	1.9435	2.8948	2.8948
C2	1.3253		2.8948	2.8948	1.9435	1.9435
Br3	1.9435	2.8948		3.2396	4.7495	3.4732
Br4	1.9435	2.8948	3.2396		3.4732	4.7495
Br5	2.8948	1.9435	4.7495	3.4732		3.2396
Br6	2.8948	1.9435	3.4732	4.7495	3.2396

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	Br5	123.545	C1	C2	Br6	123.545
C2	C1	Br3	123.545	C2	C1	Br4	123.545
Br3	C1	Br4	112.911	Br5	C2	Br6	112.911

All results from a given calculation for C₂Br₄ (tetrabromoethene)

using model chemistry: HF/LANL2DZ

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	-0.249
2	C	-0.249
3	Br	0.125
4	Br	0.125
5	Br	0.125
6	Br	0.125

<r²>	208.365
(<r²>)^1/2	14.435

All results from a given calculation for C2Br4 (tetrabromoethene)

using model chemistry: HF/LANL2DZ

States and conformations

All results from a given calculation for C₂Br₄ (tetrabromoethene)