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

using model chemistry: B2PLYP/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A1
Energy calculated at B2PLYP/3-21G*
 hartrees
Energy at 0K-5200.012906
Energy at 298.15K-5200.020581
HF Energy-5199.864168
Nuclear repulsion energy430.874385
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 B2PLYP/3-21G*
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 3262 3262 0.83      
2 A1 1628 1628 27.66      
3 A1 1228 1228 1.49      
4 A1 607 607 8.75      
5 A1 113 113 0.01      
6 A2 943 943 0.00      
7 A2 392 392 0.00      
8 B1 718 718 74.10      
9 B2 3237 3237 12.02      
10 B2 1348 1348 33.97      
11 B2 782 782 53.09      
12 B2 482 482 2.22      

Unscaled Zero Point Vibrational Energy (zpe) 7369.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7369.8 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 B2PLYP/3-21G*
ABC
0.27391 0.03491 0.03096

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.665 1.284
C2 0.000 -0.665 1.284
Br3 0.000 1.724 -0.283
Br4 0.000 -1.724 -0.283
H5 0.000 1.235 2.203
H6 0.000 -1.235 2.203

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.33081.89162.85781.08092.1107
C21.33082.85781.89162.11071.0809
Br31.89162.85783.44832.53393.8648
Br42.85781.89163.44833.86482.5339
H51.08092.11072.53393.86482.4697
H62.11071.08093.86482.53392.4697

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 124.036 C1 C2 H6 121.792
C2 C1 Br3 124.036 C2 C1 H5 121.792
Br3 C1 H5 114.172 Br4 C2 H6 114.172
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.235      
2 C -0.235      
3 Br -0.011      
4 Br -0.011      
5 H 0.246      
6 H 0.246      


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 1.615 1.615
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -49.938 0.000 0.000
y 0.000 -47.498 0.000
z 0.000 0.000 -41.596
Traceless
 xyz
x -5.390 0.000 0.000
y 0.000 -1.732 0.000
z 0.000 0.000 7.122
Polar
3z2-r214.244
x2-y2-2.439
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.479 0.000 0.000
y 0.000 10.000 0.000
z 0.000 0.000 7.334


<r2> (average value of r2) Å2
<r2> 280.509
(<r2>)1/2 16.748