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All results from a given calculation for CBr2 (dibromomethylene)

using model chemistry: PBEPBEultrafine/cc-pVDZ

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 PBEPBEultrafine/cc-pVDZ
 hartrees
Energy at 0K-5185.440000
Energy at 298.15K-5185.444962
HF Energy-5185.440000
Nuclear repulsion energy320.827996
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/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 589 586 15.24      
2 A1 185 184 0.62      
3 B2 609 605 298.79      

Unscaled Zero Point Vibrational Energy (zpe) 691.5 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 687.5 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 PBEPBEultrafine/cc-pVDZ
ABC
1.23482 0.04292 0.04148

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.019
Br2 0.000 1.577 -0.087
Br3 0.000 -1.577 -0.087

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.92681.9268
Br21.92683.1548
Br31.92683.1548

picture of dibromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 Br3 109.908
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.181      
2 Br 0.090      
3 Br 0.090      


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 -1.179 1.179
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.956 0.000 0.000
y 0.000 -39.009 0.000
z 0.000 0.000 -44.111
Traceless
 xyz
x 0.604 0.000 0.000
y 0.000 3.524 0.000
z 0.000 0.000 -4.128
Polar
3z2-r2-8.256
x2-y2-1.947
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.301 0.000 0.000
y 0.000 11.302 0.000
z 0.000 0.000 5.136


<r2> (average value of r2) Å2
<r2> 206.773
(<r2>)1/2 14.380

State 2 (3B1)

Jump to S1C1
Energy calculated at PBEPBEultrafine/cc-pVDZ
 hartrees
Energy at 0K-5185.412649
Energy at 298.15K-5185.417654
HF Energy-5185.412649
Nuclear repulsion energy313.981848
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/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 516 513 0.03      
2 A1 181 179 0.26      
3 B2 839 834 173.16      

Unscaled Zero Point Vibrational Energy (zpe) 767.8 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 763.3 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 PBEPBEultrafine/cc-pVDZ
ABC
2.40180 0.03821 0.03762

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.731
Br2 0.000 1.672 -0.063
Br3 0.000 -1.672 -0.063

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.85051.8505
Br21.85053.3436
Br31.85053.3436

picture of dibromomethylene state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.216      
2 Br 0.108      
3 Br 0.108      


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 -0.719 0.719
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.456 0.000 0.000
y 0.000 -37.373 0.000
z 0.000 0.000 -41.806
Traceless
 xyz
x -2.866 0.000 0.000
y 0.000 4.758 0.000
z 0.000 0.000 -1.892
Polar
3z2-r2-3.783
x2-y2-5.083
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.180 0.000 0.000
y 0.000 10.777 0.000
z 0.000 0.000 4.247


<r2> (average value of r2) Å2
<r2> 224.446
(<r2>)1/2 14.982