return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B2PLYP=FULL/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A1
Energy calculated at B2PLYP=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-5225.013936
Energy at 298.15K-5225.021571
HF Energy-5224.527036
Nuclear repulsion energy428.119617
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 B2PLYP=FULL/6-311+G(3df,2p)
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 3238 3238 0.00      
2 A1 1622 1622 31.18      
3 A1 1188 1188 1.66      
4 A1 594 594 7.07      
5 A1 109 109 0.04      
6 A2 910 910 0.00      
7 A2 385 385 0.00      
8 B1 691 691 56.77      
9 B2 3215 3215 17.65      
10 B2 1293 1293 46.64      
11 B2 768 768 60.28      
12 B2 478 478 2.50      

Unscaled Zero Point Vibrational Energy (zpe) 7244.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7244.9 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 B2PLYP=FULL/6-311+G(3df,2p)
ABC
0.28930 0.03352 0.03004

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.663 1.245
C2 0.000 -0.663 1.245
Br3 0.000 1.761 -0.276
Br4 0.000 -1.761 -0.276
H5 0.000 1.209 2.175
H6 0.000 -1.209 2.175

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.32551.87572.86121.07852.0902
C21.32552.86121.87572.09021.0785
Br31.87572.86123.52172.51203.8505
Br42.86121.87573.52173.85052.5120
H51.07852.09022.51203.85052.4183
H62.09021.07853.85052.51202.4183

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 125.832 C1 C2 H6 120.438
C2 C1 Br3 125.832 C2 C1 H5 120.438
Br3 C1 H5 113.730 Br4 C2 H6 113.730
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability