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	hartrees
Energy at 0K	-10373.391779
Energy at 298.15K
HF Energy	-10373.391779
Nuclear repulsion energy	1483.428662

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	1604	1535	0.00	75.73	0.28	0.43
2	A_g	276	264	0.00	10.76	0.17	0.29
3	A_g	149	143	0.00	3.00	0.66	0.79
4	A_u	57	54	0.00	0.00	0.00	0.00
5	B_1u	652	624	32.58	0.00	0.00	0.00
6	B_1u	195	186	0.25	0.00	0.00	0.00
7	B_2g	499	478	0.00	0.78	0.75	0.86
8	B_2u	781	747	133.42	0.00	0.00	0.00
9	B_2u	119	114	0.17	0.00	0.00	0.00
10	B_3g	903	863	0.00	0.89	0.75	0.86
11	B_3g	216	207	0.00	2.76	0.75	0.86
12	B_3u	257	246	3.53	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		1.3398	1.8777	1.8777	2.8357	2.8357
C2	1.3398		2.8357	2.8357	1.8777	1.8777
Br3	1.8777	2.8357		3.1591	4.6194	3.3703
Br4	1.8777	2.8357	3.1591		3.3703	4.6194
Br5	2.8357	1.8777	4.6194	3.3703		3.1591
Br6	2.8357	1.8777	3.3703	4.6194	3.1591

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	Br5	122.730	C1	C2	Br6	122.730
C2	C1	Br3	122.730	C2	C1	Br4	122.730
Br3	C1	Br4	114.539	Br5	C2	Br6	114.539

All results from a given calculation for C₂Br₄ (tetrabromoethene)

using model chemistry: mPW1PW91/6-311G**

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	-0.241
2	C	-0.241
3	Br	0.121
4	Br	0.121
5	Br	0.121
6	Br	0.121

<r²>	803.183
(<r²>)^1/2	28.340

All results from a given calculation for C2Br4 (tetrabromoethene)

using model chemistry: mPW1PW91/6-311G**

States and conformations

All results from a given calculation for C₂Br₄ (tetrabromoethene)