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

using model chemistry: TPSSh/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 TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-5220.900540
Energy at 298.15K-5220.908189
HF Energy-5220.900540
Nuclear repulsion energy435.077426
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 TPSSh/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 3228 3115 1.03      
2 A1 1629 1572 28.39      
3 A1 1176 1135 1.11      
4 A1 617 595 8.27      
5 A1 108 105 0.05      
6 A2 893 862 0.00      
7 A2 389 375 0.00      
8 B1 698 674 49.97      
9 B2 3205 3093 10.98      
10 B2 1282 1237 37.16      
11 B2 786 758 55.08      
12 B2 482 465 2.01      

Unscaled Zero Point Vibrational Energy (zpe) 7245.6 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 6992.0 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 TPSSh/6-31G(2df,p)
ABC
0.28772 0.03517 0.03134

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.666 1.249
C2 0.000 -0.666 1.249
Br3 0.000 1.718 -0.276
Br4 0.000 -1.718 -0.276
H5 0.000 1.222 2.178
H6 0.000 -1.222 2.178

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.33151.85282.82961.08292.1039
C21.33152.82961.85282.10391.0829
Br31.85282.82963.43522.50413.8295
Br42.82961.85283.43523.82952.5041
H51.08292.10392.50413.82952.4437
H62.10391.08293.82952.50412.4437

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 124.590 C1 C2 H6 120.900
C2 C1 Br3 124.590 C2 C1 H5 120.900
Br3 C1 H5 114.510 Br4 C2 H6 114.510
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.247      
2 C -0.247      
3 Br 0.072      
4 Br 0.072      
5 H 0.176      
6 H 0.176      


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 1.696 1.696
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.783 0.000 0.000
y 0.000 12.159 0.000
z 0.000 0.000 8.797


<r2> (average value of r2) Å2
<r2> 277.282
(<r2>)1/2 16.652