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

using model chemistry: HF/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A1
Energy calculated at HF/Def2TZVPP
 hartrees
Energy at 0K-5221.727293
Energy at 298.15K-5221.735108
HF Energy-5221.727293
Nuclear repulsion energy427.844387
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 HF/Def2TZVPP
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 3382 3065 0.68      
2 A1 1786 1619 31.72      
3 A1 1291 1170 3.11      
4 A1 620 562 9.20      
5 A1 117 106 0.09      
6 A2 1054 955 0.00      
7 A2 422 382 0.00      
8 B1 775 703 62.67      
9 B2 3357 3043 17.26      
10 B2 1405 1274 62.80      
11 B2 819 742 61.77      
12 B2 508 460 3.59      

Unscaled Zero Point Vibrational Energy (zpe) 7768.1 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 7041.0 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 HF/Def2TZVPP
ABC
0.29484 0.03320 0.02984

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.654 1.232
C2 0.000 -0.654 1.232
Br3 0.000 1.772 -0.273
Br4 0.000 -1.772 -0.273
H5 0.000 1.190 2.158
H6 0.000 -1.190 2.158

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.30791.87492.85501.06972.0634
C21.30792.85501.87492.06341.0697
Br31.87492.85503.54472.49913.8319
Br42.85501.87493.54473.83192.4991
H51.06972.06342.49913.83192.3803
H62.06341.06973.83192.49912.3803

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 126.622 C1 C2 H6 120.084
C2 C1 Br3 126.622 C2 C1 H5 120.084
Br3 C1 H5 113.294 Br4 C2 H6 113.294
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.069      
2 C -0.069      
3 Br -0.034      
4 Br -0.034      
5 H 0.103      
6 H 0.103      


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 1.999 1.999
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -50.808 0.000 0.000
y 0.000 -49.584 0.000
z 0.000 0.000 -42.770
Traceless
 xyz
x -4.631 0.000 0.000
y 0.000 -2.795 0.000
z 0.000 0.000 7.426
Polar
3z2-r214.852
x2-y2-1.224
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.877 0.000 0.000
y 0.000 12.110 0.000
z 0.000 0.000 8.590


<r2> (average value of r2) Å2
<r2> 289.889
(<r2>)1/2 17.026