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	hartrees
Energy at 0K	-10367.526699
Energy at 298.15K	-10367.518258
HF Energy	-10355.578890
Nuclear repulsion energy	1489.339262

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	1783	1783	0.00	100.82	0.41	0.58
2	A_g	294	294	0.00	12.87	0.16	0.27
3	A_g	162	162	0.00	2.75	0.64	0.78
4	A_u	65	65	0.00	0.00	0.00	0.00
5	B_1u	702	702	32.83	0.00	0.75	0.86
6	B_1u	208	208	0.07	0.00	0.00	0.00
7	B_2g	587	587	0.00	3.78	0.75	0.86
8	B_2u	854	854	95.60	0.00	0.00	0.00
9	B_2u	133	133	0.26	0.00	0.00	0.00
10	B_3g	1006	1006	0.00	9.30	0.75	0.86
11	B_3g	235	235	0.00	3.96	0.75	0.86
12	B_3u	283	283	0.91	0.00	0.00	0.00

Atom	y (Å)	z (Å)
C1	0.000	0.662
C2	0.000	-0.662
Br3	1.570	1.682
Br4	-1.570	1.682
Br5	-1.570	-1.682
Br6	1.570	-1.682

	C1	C2	Br3	Br4	Br5	Br6
C1		1.3241	1.8723	1.8723	2.8214	2.8214
C2	1.3241		2.8214	2.8214	1.8723	1.8723
Br3	1.8723	2.8214		3.1397	4.6020	3.3646
Br4	1.8723	2.8214	3.1397		3.3646	4.6020
Br5	2.8214	1.8723	4.6020	3.3646		3.1397
Br6	2.8214	1.8723	3.3646	4.6020	3.1397

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	Br5	123.021	C1	C2	Br6	123.021
C2	C1	Br3	123.021	C2	C1	Br4	123.021
Br3	C1	Br4	113.959	Br5	C2	Br6	113.959

All results from a given calculation for C₂Br₄ (tetrabromoethene)

using model chemistry: CBS-Q

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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All results from a given calculation for C2Br4 (tetrabromoethene)

using model chemistry: CBS-Q

States and conformations

All results from a given calculation for C₂Br₄ (tetrabromoethene)