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

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/6-31G(2df,p)
 hartrees
Energy at 0K-5220.227558
Energy at 298.15K-5220.235140
HF Energy-5220.227558
Nuclear repulsion energy433.359088
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 PBEPBEultrafine/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 3157 3124 0.45      
2 A1 1587 1570 28.86      
3 A1 1139 1127 0.85      
4 A1 603 596 7.53      
5 A1 107 106 0.04      
6 A2 846 837 0.00      
7 A2 382 378 0.00      
8 B1 667 661 48.32      
9 B2 3135 3103 12.15      
10 B2 1235 1222 32.04      
11 B2 767 759 55.94      
12 B2 474 469 1.79      

Unscaled Zero Point Vibrational Energy (zpe) 7048.8 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 6976.2 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 PBEPBEultrafine/6-31G(2df,p)
ABC
0.28683 0.03483 0.03106

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.670 1.250
C2 0.000 -0.670 1.250
Br3 0.000 1.726 -0.277
Br4 0.000 -1.726 -0.277
H5 0.000 1.227 2.188
H6 0.000 -1.227 2.188

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.33931.85662.84081.09132.1161
C21.33932.84081.85662.11611.0913
Br31.85662.84083.45192.51493.8467
Br42.84081.85663.45193.84672.5149
H51.09132.11612.51493.84672.4543
H62.11611.09133.84672.51492.4543

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 124.678 C1 C2 H6 120.719
C2 C1 Br3 124.678 C2 C1 H5 120.719
Br3 C1 H5 114.603 Br4 C2 H6 114.603
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.238      
2 C -0.238      
3 Br 0.083      
4 Br 0.083      
5 H 0.155      
6 H 0.155      


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 1.563 1.563
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -49.227 0.000 0.000
y 0.000 -47.757 0.000
z 0.000 0.000 -41.989
Traceless
 xyz
x -4.353 0.000 0.000
y 0.000 -2.150 0.000
z 0.000 0.000 6.503
Polar
3z2-r213.006
x2-y2-1.469
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.764 0.000 0.000
y 0.000 12.353 0.000
z 0.000 0.000 8.922


<r2> (average value of r2) Å2
<r2> 279.543
(<r2>)1/2 16.720