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

using model chemistry: B3PW91/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A1
Energy calculated at B3PW91/STO-3G
 hartrees
Energy at 0K-5168.490177
Energy at 298.15K-5168.497729
HF Energy-5168.490177
Nuclear repulsion energy425.212958
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 B3PW91/STO-3G
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 3461 3063 2.76      
2 A1 1774 1570 20.45      
3 A1 1285 1138 0.10      
4 A1 665 588 10.02      
5 A1 104 92 0.10      
6 A2 984 871 0.00      
7 A2 399 353 0.00      
8 B1 732 648 22.57      
9 B2 3437 3041 43.65      
10 B2 1429 1264 52.77      
11 B2 862 762 36.96      
12 B2 526 465 3.66      

Unscaled Zero Point Vibrational Energy (zpe) 7827.9 cm-1
Scaled (by 0.885) Zero Point Vibrational Energy (zpe) 6927.7 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 B3PW91/STO-3G
ABC
0.29064 0.03284 0.02950

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.672 1.238
C2 0.000 -0.672 1.238
Br3 0.000 1.779 -0.275
Br4 0.000 -1.779 -0.275
H5 0.000 1.203 2.200
H6 0.000 -1.203 2.200

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.34311.87492.88001.09962.1074
C21.34312.88001.87492.10741.0996
Br31.87492.88003.55832.54143.8758
Br42.88001.87493.55833.87582.5414
H51.09962.10742.54143.87582.4065
H62.10741.09963.87582.54142.4065

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 126.209 C1 C2 H6 118.916
C2 C1 Br3 126.209 C2 C1 H5 118.916
Br3 C1 H5 114.875 Br4 C2 H6 114.875
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.154      
2 C -0.154      
3 Br 0.048      
4 Br 0.048      
5 H 0.105      
6 H 0.105      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 1.448 1.448
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -44.666 0.000 0.000
y 0.000 -44.722 0.000
z 0.000 0.000 -40.608
Traceless
 xyz
x -2.000 0.000 0.000
y 0.000 -2.085 0.000
z 0.000 0.000 4.086
Polar
3z2-r28.171
x2-y20.056
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.617 0.000 0.000
y 0.000 5.907 0.000
z 0.000 0.000 3.989


<r2> (average value of r2) Å2
<r2> 290.309
(<r2>)1/2 17.038