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	hartrees
Energy at 0K	-10315.846655
Energy at 298.15K
HF Energy	-10315.474070
Nuclear repulsion energy	1443.440910

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A_g	1664	1613	12.01
2	A_g	250	243	78.39
3	A_g	148	143	78.91
4	A_u	58	57	78.92
5	B_1u	616	597	13.44
6	B_1u	188	182	60.32
7	B_2g	598	580	12.11
8	B_2u	757	733	13.09
9	B_2u	124	120	68.35
10	B_3g	910	882	12.20
11	B_3g	219	212	73.39
12	B_3u	270	262	12.76

Atom	y (Å)	z (Å)
C1	0.000	0.665
C2	0.000	-0.665
Br3	1.627	1.728
Br4	-1.627	1.728
Br5	-1.627	-1.728
Br6	1.627	-1.728

	C1	C2	Br3	Br4	Br5	Br6
C1		1.3303	1.9433	1.9433	2.8936	2.8936
C2	1.3303		2.8936	2.8936	1.9433	1.9433
Br3	1.9433	2.8936		3.2542	4.7465	3.4553
Br4	1.9433	2.8936	3.2542		3.4553	4.7465
Br5	2.8936	1.9433	4.7465	3.4553		3.2542
Br6	2.8936	1.9433	3.4553	4.7465	3.2542

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	Br5	123.145	C1	C2	Br6	123.145
C2	C1	Br3	123.145	C2	C1	Br4	123.145
Br3	C1	Br4	113.709	Br5	C2	Br6	113.709

All results from a given calculation for C₂Br₄ (tetrabromoethene)

using model chemistry: QCISD/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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All results from a given calculation for C2Br4 (tetrabromoethene)

using model chemistry: QCISD/3-21G

States and conformations

All results from a given calculation for C₂Br₄ (tetrabromoethene)