return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/cc-pVTZ
 hartrees
Energy at 0K-5225.874769
Energy at 298.15K-5225.882376
HF Energy-5225.874769
Nuclear repulsion energy425.503457
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 B3LYPultrafine/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 3215 3108 0.22      
2 A1 1630 1575 34.34      
3 A1 1182 1143 1.94      
4 A1 573 554 8.27      
5 A1 106 103 0.04      
6 A2 907 877 0.00      
7 A2 386 373 0.00      
8 B1 687 664 60.25      
9 B2 3194 3087 16.41      
10 B2 1286 1243 49.14      
11 B2 752 727 66.25      
12 B2 471 455 3.70      

Unscaled Zero Point Vibrational Energy (zpe) 7194.1 cm-1
Scaled (by 0.9667) Zero Point Vibrational Energy (zpe) 6954.5 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 B3LYPultrafine/cc-pVTZ
ABC
0.28898 0.03296 0.02959

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.661 1.246
C2 0.000 -0.661 1.246
Br3 0.000 1.776 -0.276
Br4 0.000 -1.776 -0.276
H5 0.000 1.210 2.175
H6 0.000 -1.210 2.175

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.32191.88662.87321.07952.0891
C21.32192.87321.88662.08911.0795
Br31.88662.87323.55242.51573.8634
Br42.87321.88663.55243.86342.5157
H51.07952.08912.51573.86342.4200
H62.08911.07953.86342.51572.4200

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 126.237 C1 C2 H6 120.572
C2 C1 Br3 126.237 C2 C1 H5 120.572
Br3 C1 H5 113.192 Br4 C2 H6 113.192
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.144      
2 C -0.144      
3 Br -0.010      
4 Br -0.010      
5 H 0.154      
6 H 0.154      


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 1.683 1.683
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -50.428 0.000 0.000
y 0.000 -48.795 0.000
z 0.000 0.000 -42.876
Traceless
 xyz
x -4.593 0.000 0.000
y 0.000 -2.143 0.000
z 0.000 0.000 6.736
Polar
3z2-r213.472
x2-y2-1.633
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.270 0.000 0.000
y 0.000 12.306 0.000
z 0.000 0.000 8.800


<r2> (average value of r2) Å2
<r2> 292.013
(<r2>)1/2 17.088