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All results from a given calculation for CHBrCHBr (Ethene, 1,2-dibromo-, (Z)-)

using model chemistry: CCSD/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A1
Energy calculated at CCSD/TZVP
 hartrees
Energy at 0K-5222.455366
Energy at 298.15K-5222.462963
HF Energy-5221.712077
Nuclear repulsion energy426.056276
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CCSD/TZVP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3269 3120 1.29      
2 A1 1660 1584 27.14      
3 A1 1212 1157 2.68      
4 A1 586 559 7.86      
5 A1 111 106 0.04      
6 A2 852 813 0.00      
7 A2 364 347 0.00      
8 B1 691 660 63.95      
9 B2 3246 3098 12.42      
10 B2 1318 1258 50.24      
11 B2 773 738 52.69      
12 B2 472 451 2.04      

Unscaled Zero Point Vibrational Energy (zpe) 7276.2 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 6944.4 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CCSD/TZVP
ABC
0.28618 0.03321 0.02976

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.663 1.252
C2 0.000 -0.663 1.252
Br3 0.000 1.769 -0.277
Br4 0.000 -1.769 -0.277
H5 0.000 1.211 2.183
H6 0.000 -1.211 2.183

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.32681.88742.87361.07992.0929
C21.32682.87361.88742.09291.0799
Br31.88742.87363.53852.52283.8646
Br42.87361.88743.53853.86462.5228
H51.07992.09292.52283.86462.4222
H62.09291.07993.86462.52282.4222

picture of Ethene, 1,2-dibromo-, (Z)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Br4 125.866 C1 C2 H6 120.472
C2 C1 Br3 125.866 C2 C1 H5 120.472
Br3 C1 H5 113.662 Br4 C2 H6 113.662
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability