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

using model chemistry: B3PW91/6-31G(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 B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-5221.082984
Energy at 298.15K-5221.090655
HF Energy-5221.082984
Nuclear repulsion energy435.017618
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 B3PW91/6-31G(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 3236 3111 0.37      
2 A1 1650 1586 26.96      
3 A1 1181 1135 0.94      
4 A1 622 598 7.73      
5 A1 110 106 0.05      
6 A2 904 870 0.00      
7 A2 395 380 0.00      
8 B1 699 672 50.37      
9 B2 3213 3089 13.60      
10 B2 1281 1232 34.06      
11 B2 794 763 55.23      
12 B2 487 468 1.71      

Unscaled Zero Point Vibrational Energy (zpe) 7285.7 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 7004.4 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 B3PW91/6-31G(2df,p)
ABC
0.29080 0.03501 0.03125

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.664 1.241
C2 0.000 -0.664 1.241
Br3 0.000 1.722 -0.275
Br4 0.000 -1.722 -0.275
H5 0.000 1.215 2.174
H6 0.000 -1.215 2.174

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.32831.84872.82701.08362.0982
C21.32832.82701.84872.09821.0836
Br31.84872.82703.44392.50093.8243
Br42.82701.84873.44393.82432.5009
H51.08362.09822.50093.82432.4306
H62.09821.08363.82432.50092.4306

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 124.903 C1 C2 H6 120.572
C2 C1 Br3 124.903 C2 C1 H5 120.572
Br3 C1 H5 114.524 Br4 C2 H6 114.524
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.253      
2 C -0.253      
3 Br 0.075      
4 Br 0.075      
5 H 0.178      
6 H 0.178      


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 1.668 1.668
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -49.217 0.000 0.000
y 0.000 -47.786 0.000
z 0.000 0.000 -41.758
Traceless
 xyz
x -4.445 0.000 0.000
y 0.000 -2.299 0.000
z 0.000 0.000 6.743
Polar
3z2-r213.487
x2-y2-1.431
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.746 0.000 0.000
y 0.000 12.071 0.000
z 0.000 0.000 8.713


<r2> (average value of r2) Å2
<r2> 277.921
(<r2>)1/2 16.671