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

using model chemistry: mPW1PW91/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A1
Energy calculated at mPW1PW91/TZVP
 hartrees
Energy at 0K-5226.075695
Energy at 298.15K-5226.083345
HF Energy-5226.075695
Nuclear repulsion energy428.425552
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 mPW1PW91/TZVP
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 3248 3099 0.00      
2 A1 1660 1583 37.43      
3 A1 1191 1137 1.00      
4 A1 597 569 9.16      
5 A1 107 102 0.03      
6 A2 917 875 0.00      
7 A2 390 372 0.00      
8 B1 698 666 74.14      
9 B2 3227 3078 17.98      
10 B2 1293 1233 45.58      
11 B2 774 739 72.38      
12 B2 483 460 2.44      

Unscaled Zero Point Vibrational Energy (zpe) 7291.7 cm-1
Scaled (by 0.954) Zero Point Vibrational Energy (zpe) 6956.3 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 mPW1PW91/TZVP
ABC
0.29003 0.03356 0.03008

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.661 1.243
C2 0.000 -0.661 1.243
Br3 0.000 1.760 -0.275
Br4 0.000 -1.760 -0.275
H5 0.000 1.210 2.174
H6 0.000 -1.210 2.174

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.32111.87482.85751.08082.0895
C21.32112.85751.87482.08951.0808
Br31.87482.85753.51992.51013.8497
Br42.85751.87483.51993.84972.5101
H51.08082.08952.51013.84972.4205
H62.08951.08083.84972.51012.4205

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 125.903 C1 C2 H6 120.573
C2 C1 Br3 125.903 C2 C1 H5 120.573
Br3 C1 H5 113.524 Br4 C2 H6 113.524
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.137      
2 C -0.137      
3 Br -0.045      
4 Br -0.045      
5 H 0.182      
6 H 0.182      


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 1.702 1.702
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -50.339 0.000 0.000
y 0.000 -48.469 0.000
z 0.000 0.000 -42.256
Traceless
 xyz
x -4.977 0.000 0.000
y 0.000 -2.172 0.000
z 0.000 0.000 7.149
Polar
3z2-r214.297
x2-y2-1.870
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.843 0.000 0.000
y 0.000 11.536 0.000
z 0.000 0.000 8.370


<r2> (average value of r2) Å2
<r2> 287.662
(<r2>)1/2 16.961