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

using model chemistry: B1B95/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A1
Energy calculated at B1B95/3-21G
 hartrees
Energy at 0K-5201.646890
Energy at 298.15K-5201.654618
HF Energy-5201.646890
Nuclear repulsion energy435.911561
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 B1B95/3-21G
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 3272 3130 0.40      
2 A1 1664 1592 30.78      
3 A1 1213 1160 0.92      
4 A1 631 603 8.66      
5 A1 117 112 0.01      
6 A2 961 919 0.00      
7 A2 399 382 0.00      
8 B1 721 690 84.09      
9 B2 3247 3106 13.71      
10 B2 1336 1278 28.47      
11 B2 795 761 56.45      
12 B2 495 473 1.25      

Unscaled Zero Point Vibrational Energy (zpe) 7424.7 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 7103.3 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 B1B95/3-21G
ABC
0.27708 0.03592 0.03180

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.662 1.276
C2 0.000 -0.662 1.276
Br3 0.000 1.699 -0.282
Br4 0.000 -1.699 -0.282
H5 0.000 1.232 2.194
H6 0.000 -1.232 2.194

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.32481.87152.82921.08022.1051
C21.32482.82921.87152.10511.0802
Br31.87152.82923.39842.51933.8369
Br42.82921.87153.39843.83692.5193
H51.08022.10512.51933.83692.4643
H62.10511.08023.83692.51932.4643

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 123.643 C1 C2 H6 121.835
C2 C1 Br3 123.643 C2 C1 H5 121.835
Br3 C1 H5 114.522 Br4 C2 H6 114.522
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.273      
2 C -0.273      
3 Br 0.007      
4 Br 0.007      
5 H 0.266      
6 H 0.266      


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 1.494 1.494
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -49.619 0.000 0.000
y 0.000 -46.756 0.000
z 0.000 0.000 -41.116
Traceless
 xyz
x -5.683 0.000 0.000
y 0.000 -1.389 0.000
z 0.000 0.000 7.072
Polar
3z2-r214.144
x2-y2-2.863
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.529 0.000 0.000
y 0.000 10.109 0.000
z 0.000 0.000 7.355


<r2> (average value of r2) Å2
<r2> 273.769
(<r2>)1/2 16.546