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

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A1
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-5217.627550
Energy at 298.15K-5217.635250
HF Energy-5217.012231
Nuclear repulsion energy436.722564
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 MP2/6-31G(2df,p)
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 3279 3097 0.00      
2 A1 1623 1533 20.50      
3 A1 1194 1128 1.00      
4 A1 639 604 6.67      
5 A1 117 110 0.04      
6 A2 906 856 0.00      
7 A2 389 368 0.00      
8 B1 707 668 49.35      
9 B2 3258 3077 18.21      
10 B2 1301 1229 30.75      
11 B2 809 764 43.44      
12 B2 490 462 0.91      

Unscaled Zero Point Vibrational Energy (zpe) 7355.6 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 6947.4 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 MP2/6-31G(2df,p)
ABC
0.28776 0.03555 0.03164

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.668 1.248
C2 0.000 -0.668 1.248
Br3 0.000 1.708 -0.276
Br4 0.000 -1.708 -0.276
H5 0.000 1.213 2.183
H6 0.000 -1.213 2.183

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.33601.84562.82321.08202.1007
C21.33602.82321.84562.10071.0820
Br31.84562.82323.41652.50833.8187
Br42.82321.84563.41653.81872.5083
H51.08202.10072.50833.81872.4268
H62.10071.08203.81872.50832.4268

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 124.307 C1 C2 H6 120.270
C2 C1 Br3 124.307 C2 C1 H5 120.270
Br3 C1 H5 115.423 Br4 C2 H6 115.423
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability