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

using model chemistry: mPW1PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A1
Energy calculated at mPW1PW91/3-21G
 hartrees
Energy at 0K-5200.877116
Energy at 298.15K-5200.884842
HF Energy-5200.877116
Nuclear repulsion energy425.160601
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 mPW1PW91/3-21G
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 3285 3136 0.11      
2 A1 1703 1626 33.21      
3 A1 1220 1165 1.24      
4 A1 590 563 9.29      
5 A1 113 107 0.01      
6 A2 1011 966 0.00      
7 A2 414 395 0.00      
8 B1 754 720 104.95      
9 B2 3260 3112 14.02      
10 B2 1334 1273 45.80      
11 B2 772 737 65.04      
12 B2 491 469 2.40      

Unscaled Zero Point Vibrational Energy (zpe) 7473.6 cm-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 7134.3 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 mPW1PW91/3-21G
ABC
0.27902 0.03335 0.02979

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.659 1.271
C2 0.000 -0.659 1.271
Br3 0.000 1.766 -0.281
Br4 0.000 -1.766 -0.281
H5 0.000 1.215 2.197
H6 0.000 -1.215 2.197

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.31771.90552.87831.08062.0904
C21.31772.87831.90552.09041.0806
Br31.90552.87833.53142.53813.8760
Br42.87831.90553.53143.87602.5381
H51.08062.09042.53813.87602.4300
H62.09041.08063.87602.53812.4300

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 125.511 C1 C2 H6 120.972
C2 C1 Br3 125.511 C2 C1 H5 120.972
Br3 C1 H5 113.516 Br4 C2 H6 113.516
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.488      
2 C -0.488      
3 Br 0.198      
4 Br 0.198      
5 H 0.290      
6 H 0.290      


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 1.645 1.645
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -50.156 0.000 0.000
y 0.000 -47.277 0.000
z 0.000 0.000 -42.103
Traceless
 xyz
x -5.466 0.000 0.000
y 0.000 -1.147 0.000
z 0.000 0.000 6.613
Polar
3z2-r213.227
x2-y2-2.879
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.865 0.000 0.000
y 0.000 9.170 0.000
z 0.000 0.000 6.709


<r2> (average value of r2) Å2
<r2> 289.988
(<r2>)1/2 17.029