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

using model chemistry: mPW1PW91/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 mPW1PW91/aug-cc-pVTZ
 hartrees
Energy at 0K-5226.178420
Energy at 298.15K-5226.186075
HF Energy-5226.178420
Nuclear repulsion energy429.974760
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/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 3241 3105 0.00      
2 A1 1654 1585 33.47      
3 A1 1181 1131 1.37      
4 A1 605 579 7.43      
5 A1 106 102 0.04      
6 A2 914 876 0.00      
7 A2 390 373 0.00      
8 B1 693 664 57.65      
9 B2 3218 3084 17.70      
10 B2 1289 1235 44.16      
11 B2 775 743 61.87      
12 B2 484 464 2.27      

Unscaled Zero Point Vibrational Energy (zpe) 7274.6 cm-1
Scaled (by 0.9581) Zero Point Vibrational Energy (zpe) 6969.8 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/aug-cc-pVTZ
ABC
0.29101 0.03386 0.03033

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.660 1.241
C2 0.000 -0.660 1.241
Br3 0.000 1.752 -0.275
Br4 0.000 -1.752 -0.275
H5 0.000 1.208 2.171
H6 0.000 -1.208 2.171

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.32081.86802.84921.07972.0875
C21.32082.84921.86802.08751.0797
Br31.86802.84923.50412.50593.8403
Br42.84921.86803.50413.84032.5059
H51.07972.08752.50593.84032.4166
H62.08751.07973.84032.50592.4166

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 125.759 C1 C2 H6 120.493
C2 C1 Br3 125.759 C2 C1 H5 120.493
Br3 C1 H5 113.748 Br4 C2 H6 113.748
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.364      
2 C -0.364      
3 Br 0.083      
4 Br 0.083      
5 H 0.281      
6 H 0.281      


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 1.653 1.653
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -50.216 0.000 0.000
y 0.000 -48.595 0.000
z 0.000 0.000 -42.569
Traceless
 xyz
x -4.633 0.000 0.000
y 0.000 -2.203 0.000
z 0.000 0.000 6.836
Polar
3z2-r213.672
x2-y2-1.621
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.271 0.000 0.000
y 0.000 13.409 0.000
z 0.000 0.000 9.745


<r2> (average value of r2) Å2
<r2> 285.663
(<r2>)1/2 16.902