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

using model chemistry: mPW1PW91/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A1
Energy calculated at mPW1PW91/aug-cc-pVDZ
 hartrees
Energy at 0K-5226.014116
Energy at 298.15K-5226.021760
HF Energy-5226.014116
Nuclear repulsion energy428.647317
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 mPW1PW91/aug-cc-pVDZ
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 3256 3121 0.00      
2 A1 1661 1592 35.26      
3 A1 1168 1119 1.61      
4 A1 606 581 7.85      
5 A1 108 104 0.04      
6 A2 897 860 0.00      
7 A2 383 367 0.00      
8 B1 690 662 59.44      
9 B2 3235 3100 18.73      
10 B2 1272 1219 44.76      
11 B2 776 744 64.58      
12 B2 483 463 2.60      

Unscaled Zero Point Vibrational Energy (zpe) 7267.8 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 6964.8 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 mPW1PW91/aug-cc-pVDZ
ABC
0.28827 0.03370 0.03017

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.665 1.247
C2 0.000 -0.665 1.247
Br3 0.000 1.756 -0.276
Br4 0.000 -1.756 -0.276
H5 0.000 1.220 2.183
H6 0.000 -1.220 2.183

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.33021.87332.86021.08802.1043
C21.33022.86021.87332.10431.0880
Br31.87332.86023.51182.51683.8600
Br42.86021.87333.51183.86002.5168
H51.08802.10432.51683.86002.4391
H62.10431.08803.86002.51682.4391

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 125.614 C1 C2 H6 120.639
C2 C1 Br3 125.614 C2 C1 H5 120.639
Br3 C1 H5 113.747 Br4 C2 H6 113.747
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.189      
2 C 0.189      
3 Br 0.279      
4 Br 0.279      
5 H -0.468      
6 H -0.468      


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 1.709 1.709
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -50.567 0.000 0.000
y 0.000 -48.633 0.000
z 0.000 0.000 -42.429
Traceless
 xyz
x -5.036 0.000 0.000
y 0.000 -2.135 0.000
z 0.000 0.000 7.171
Polar
3z2-r214.342
x2-y2-1.934
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.021 0.000 0.000
y 0.000 13.231 0.000
z 0.000 0.000 9.608


<r2> (average value of r2) Å2
<r2> 287.118
(<r2>)1/2 16.945