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

using model chemistry: B2PLYP=FULL/3-21G

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/3-21G
 hartrees
Energy at 0K-5199.498197
Energy at 298.15K-5199.505879
HF Energy-5199.406982
Nuclear repulsion energy420.984196
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/3-21G
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 3280 3123 0.91      
2 A1 1672 1592 28.98      
3 A1 1228 1169 2.10      
4 A1 564 537 8.28      
5 A1 112 106 0.02      
6 A2 1009 961 0.00      
7 A2 407 388 0.00      
8 B1 750 714 89.85      
9 B2 3255 3098 11.02      
10 B2 1343 1279 54.26      
11 B2 757 720 57.26      
12 B2 477 454 3.18      

Unscaled Zero Point Vibrational Energy (zpe) 7426.4 cm-1
Scaled (by 0.952) Zero Point Vibrational Energy (zpe) 7069.9 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/3-21G
ABC
0.27607 0.03256 0.02913

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.661 1.278
C2 0.000 -0.661 1.278
Br3 0.000 1.787 -0.282
Br4 0.000 -1.787 -0.282
H5 0.000 1.216 2.204
H6 0.000 -1.216 2.204

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.32151.92432.90291.07942.0925
C21.32152.90291.92432.09251.0794
Br31.92432.90293.57462.55073.8984
Br42.90291.92433.57463.89842.5507
H51.07942.09252.55073.89842.4315
H62.09251.07943.89842.55072.4315

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 125.834 C1 C2 H6 120.941
C2 C1 Br3 125.834 C2 C1 H5 120.941
Br3 C1 H5 113.225 Br4 C2 H6 113.225
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability