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

using model chemistry: HF/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-5221.819404
Energy at 298.15K-5221.827222
HF Energy-5221.819404
Nuclear repulsion energy427.719818
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/aug-cc-pVTZ
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 3380 3077 0.32      
2 A1 1782 1623 32.68      
3 A1 1290 1174 2.98      
4 A1 619 564 8.94      
5 A1 117 107 0.09      
6 A2 1047 954 0.00      
7 A2 420 382 0.00      
8 B1 773 704 60.29      
9 B2 3354 3054 18.27      
10 B2 1404 1278 64.93      
11 B2 817 744 60.90      
12 B2 507 461 3.64      

Unscaled Zero Point Vibrational Energy (zpe) 7755.4 cm-1
Scaled (by 0.9104) Zero Point Vibrational Energy (zpe) 7060.5 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/aug-cc-pVTZ
ABC
0.29433 0.03320 0.02983

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.654 1.234
C2 0.000 -0.654 1.234
Br3 0.000 1.770 -0.273
Br4 0.000 -1.770 -0.273
H5 0.000 1.190 2.160
H6 0.000 -1.190 2.160

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.30791.87562.85461.07002.0635
C21.30792.85461.87562.06351.0700
Br31.87562.85463.54062.50133.8320
Br42.85461.87563.54063.83202.5013
H51.07002.06352.50133.83202.3802
H62.06351.07003.83202.50132.3802

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 126.527 C1 C2 H6 120.074
C2 C1 Br3 126.527 C2 C1 H5 120.074
Br3 C1 H5 113.399 Br4 C2 H6 113.399
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.403      
2 C -0.403      
3 Br 0.029      
4 Br 0.029      
5 H 0.374      
6 H 0.374      


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 1.967 1.967
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -50.925 0.000 0.000
y 0.000 -49.738 0.000
z 0.000 0.000 -42.898
Traceless
 xyz
x -4.607 0.000 0.000
y 0.000 -2.827 0.000
z 0.000 0.000 7.433
Polar
3z2-r214.867
x2-y2-1.187
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.078 0.000 0.000
y 0.000 12.973 0.000
z 0.000 0.000 9.304


<r2> (average value of r2) Å2
<r2> 290.060
(<r2>)1/2 17.031