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All results from a given calculation for CBr2 (dibromomethylene)

using model chemistry: PBE1PBE/6-311+G(3df,2p)

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 PBE1PBE/6-311+G(3df,2p)
 hartrees
Energy at 0K-5185.600758
Energy at 298.15K-5185.605804
HF Energy-5185.600758
Nuclear repulsion energy328.715954
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 PBE1PBE/6-311+G(3df,2p)
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 619 619 11.06      
2 A1 201 201 0.57      
3 B2 689 689 312.00      

Unscaled Zero Point Vibrational Energy (zpe) 754.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 754.5 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 PBE1PBE/6-311+G(3df,2p)
ABC
1.31554 0.04497 0.04349

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.987
Br2 0.000 1.541 -0.085
Br3 0.000 -1.541 -0.085

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.87721.8772
Br21.87723.0822
Br31.87723.0822

picture of dibromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 Br3 110.357
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.196      
2 Br 0.098      
3 Br 0.098      


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 -1.135 1.135
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.338 0.000 0.000
y 0.000 -39.297 0.000
z 0.000 0.000 -44.899
Traceless
 xyz
x 0.760 0.000 0.000
y 0.000 3.821 0.000
z 0.000 0.000 -4.581
Polar
3z2-r2-9.163
x2-y2-2.041
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.926 0.000 0.000
y 0.000 12.772 0.000
z 0.000 0.000 7.365


<r2> (average value of r2) Å2
<r2> 198.731
(<r2>)1/2 14.097

State 2 (3B1)

Jump to S1C1
Energy calculated at PBE1PBE/6-311+G(3df,2p)
 hartrees
Energy at 0K-5185.584173
Energy at 298.15K-5185.589226
HF Energy-5185.584173
Nuclear repulsion energy318.499949
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 PBE1PBE/6-311+G(3df,2p)
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 541 541 0.01      
2 A1 189 189 0.12      
3 B2 907 907 153.23      

Unscaled Zero Point Vibrational Energy (zpe) 818.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 818.0 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 PBE1PBE/6-311+G(3df,2p)
ABC
2.55624 0.03922 0.03863

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.708
Br2 0.000 1.650 -0.061
Br3 0.000 -1.650 -0.061

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.82051.8205
Br21.82053.3003
Br31.82053.3003

picture of dibromomethylene state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.145      
2 Br 0.072      
3 Br 0.072      


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 -0.447 0.447
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.793 0.000 0.000
y 0.000 -38.561 0.000
z 0.000 0.000 -42.124
Traceless
 xyz
x -2.450 0.000 0.000
y 0.000 3.898 0.000
z 0.000 0.000 -1.447
Polar
3z2-r2-2.895
x2-y2-4.232
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.038 0.000 0.000
y 0.000 12.233 0.000
z 0.000 0.000 6.540


<r2> (average value of r2) Å2
<r2> 219.587
(<r2>)1/2 14.818