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

using model chemistry: QCISD/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A1
Energy calculated at QCISD/cc-pVDZ
 hartrees
Energy at 0K-5222.199105
Energy at 298.15K-5222.206729
HF Energy-5221.639745
Nuclear repulsion energy424.745515
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 QCISD/cc-pVDZ
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 3251 3119 1.67      
2 A1 1656 1589 25.96      
3 A1 1186 1137 2.44      
4 A1 594 570 7.48      
5 A1 110 105 0.04      
6 A2 899 863 0.00      
7 A2 375 360 0.00      
8 B1 695 667 55.89      
9 B2 3228 3097 12.24      
10 B2 1295 1243 44.98      
11 B2 771 740 50.32      
12 B2 476 456 1.66      

Unscaled Zero Point Vibrational Energy (zpe) 7268.3 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 6973.2 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 QCISD/cc-pVDZ
ABC
0.28499 0.03299 0.02957

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.672 1.253
C2 0.000 -0.672 1.253
Br3 0.000 1.775 -0.278
Br4 0.000 -1.775 -0.278
H5 0.000 1.220 2.201
H6 0.000 -1.220 2.201

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.34391.88672.88611.09462.1162
C21.34392.88611.88672.11621.0946
Br31.88672.88613.54952.53953.8874
Br42.88611.88673.54953.88742.5395
H51.09462.11622.53953.88742.4406
H62.11621.09463.88742.53952.4406

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 125.768 C1 C2 H6 120.062
C2 C1 Br3 125.768 C2 C1 H5 120.062
Br3 C1 H5 114.170 Br4 C2 H6 114.170
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability