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	hartrees
Energy at 0K	-10357.268557
Energy at 298.15K
HF Energy	-10355.963398
Nuclear repulsion energy	1509.926899

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A_g	1654	1558	12.02
2	A_g	294	276	78.07
3	A_g	157	148	78.90
4	A_u	63	59	78.92
5	B_1u	685	645	13.67
6	B_1u	204	192	55.94
7	B_2g	516	486	12.13
8	B_2u	869	818	13.07
9	B_2u	130	122	68.85
10	B_3g	987	929	12.34
11	B_3g	229	215	68.92
12	B_3u	260	245	12.76

Atom	y (Å)	z (Å)
C1	0.000	0.669
C2	0.000	-0.669
Br3	1.554	1.653
Br4	-1.554	1.653
Br5	-1.554	-1.653
Br6	1.554	-1.653

	C1	C2	Br3	Br4	Br5	Br6
C1		1.3384	1.8394	1.8394	2.7943	2.7943
C2	1.3384		2.7943	2.7943	1.8394	1.8394
Br3	1.8394	2.7943		3.1084	4.5378	3.3060
Br4	1.8394	2.7943	3.1084		3.3060	4.5378
Br5	2.7943	1.8394	4.5378	3.3060		3.1084
Br6	2.7943	1.8394	3.3060	4.5378	3.1084

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	Br5	122.333	C1	C2	Br6	122.333
C2	C1	Br3	122.333	C2	C1	Br4	122.333
Br3	C1	Br4	115.335	Br5	C2	Br6	115.335

All results from a given calculation for C₂Br₄ (tetrabromoethene)

using model chemistry: CCSD=FULL/6-31G(2df,p)

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: CCSD=FULL/6-31G(2df,p)

States and conformations

All results from a given calculation for C₂Br₄ (tetrabromoethene)