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All results from a given calculation for CBr2 (dibromomethylene)

using model chemistry: PBEPBE/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
2 1 yes C2V 3B1

State 1 (1A1)

Jump to S2C1
Energy calculated at PBEPBE/6-311G**
 hartrees
Energy at 0K-5185.428622
Energy at 298.15K-5185.433579
HF Energy-5185.428622
Nuclear repulsion energy320.818111
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 PBEPBE/6-311G**
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 589 583 15.83      
2 A1 183 181 0.68      
3 B2 604 598 329.95      

Unscaled Zero Point Vibrational Energy (zpe) 687.7 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 681.4 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 PBEPBE/6-311G**
ABC
1.25317 0.04284 0.04142

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.012
Br2 0.000 1.579 -0.087
Br3 0.000 -1.579 -0.087

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.92341.9234
Br21.92343.1581
Br31.92343.1581

picture of dibromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 Br3 110.359
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.224      
2 Br 0.112      
3 Br 0.112      


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 -1.204 1.204
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.295 0.000 0.000
y 0.000 -39.648 0.000
z 0.000 0.000 -44.740
Traceless
 xyz
x 0.898 0.000 0.000
y 0.000 3.370 0.000
z 0.000 0.000 -4.268
Polar
3z2-r2-8.536
x2-y2-1.648
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.372 0.000 0.000
y 0.000 11.970 0.000
z 0.000 0.000 5.376


<r2> (average value of r2) Å2
<r2> 207.365
(<r2>)1/2 14.400

State 2 (3B1)

Jump to S1C1
Energy calculated at PBEPBE/6-311G**
 hartrees
Energy at 0K-5185.402887
Energy at 298.15K-5185.407894
HF Energy-5185.402887
Nuclear repulsion energy314.072728
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 PBEPBE/6-311G**
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 516 511 0.02      
2 A1 182 180 0.29      
3 B2 842 835 184.92      

Unscaled Zero Point Vibrational Energy (zpe) 769.9 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 762.8 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 PBEPBE/6-311G**
ABC
2.46208 0.03817 0.03758

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.722
Br2 0.000 1.673 -0.062
Br3 0.000 -1.673 -0.062

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.84721.8472
Br21.84723.3457
Br31.84723.3457

picture of dibromomethylene state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.276      
2 Br 0.138      
3 Br 0.138      


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 -0.721 0.721
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.891 0.000 0.000
y 0.000 -37.952 0.000
z 0.000 0.000 -42.287
Traceless
 xyz
x -2.772 0.000 0.000
y 0.000 4.637 0.000
z 0.000 0.000 -1.865
Polar
3z2-r2-3.730
x2-y2-4.939
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.309 0.000 0.000
y 0.000 11.232 0.000
z 0.000 0.000 4.403


<r2> (average value of r2) Å2
<r2> 224.913
(<r2>)1/2 14.997