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

using model chemistry: TPSSh/6-31G**

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**
 hartrees
Energy at 0K-5220.553650
Energy at 298.15K-5220.561260
HF Energy-5220.553650
Nuclear repulsion energy431.039311
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**
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 3114 1.16      
2 A1 1639 1571 35.40      
3 A1 1175 1127 1.78      
4 A1 594 570 10.52      
5 A1 113 108 0.04      
6 A2 889 853 0.00      
7 A2 379 364 0.00      
8 B1 696 668 62.22      
9 B2 3226 3093 11.71      
10 B2 1286 1233 42.03      
11 B2 763 731 64.06      
12 B2 474 455 3.67      

Unscaled Zero Point Vibrational Energy (zpe) 7241.1 cm-1
Scaled (by 0.9587) Zero Point Vibrational Energy (zpe) 6942.0 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**
ABC
0.27994 0.03464 0.03082

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.666 1.269
C2 0.000 -0.666 1.269
Br3 0.000 1.731 -0.280
Br4 0.000 -1.731 -0.280
H5 0.000 1.231 2.192
H6 0.000 -1.231 2.192

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.33231.87952.85391.08292.1101
C21.33232.85391.87952.11011.0829
Br31.87952.85393.46212.52263.8584
Br42.85391.87953.46213.85842.5226
H51.08292.11012.52263.85842.4618
H62.11011.08293.85842.52262.4618

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 124.515 C1 C2 H6 121.438
C2 C1 Br3 124.515 C2 C1 H5 121.438
Br3 C1 H5 114.047 Br4 C2 H6 114.047
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.123      
2 C -0.123      
3 Br -0.057      
4 Br -0.057      
5 H 0.180      
6 H 0.180      


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 1.736 1.736
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 4.365 0.000 0.000
y 0.000 11.091 0.000
z 0.000 0.000 8.001


<r2> (average value of r2) Å2
<r2> 281.428
(<r2>)1/2 16.776