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All results from a given calculation for CBr2 (dibromomethylene)

using model chemistry: HSEh1PBE/aug-cc-pVTZ

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 HSEh1PBE/aug-cc-pVTZ
 hartrees
Energy at 0K-5185.729820
Energy at 298.15K-5185.734859
HF Energy-5185.729820
Nuclear repulsion energy328.125564
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 HSEh1PBE/aug-cc-pVTZ
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 615 591 11.20      
2 A1 200 192 0.57      
3 B2 680 654 312.03      

Unscaled Zero Point Vibrational Energy (zpe) 747.2 cm-1
Scaled (by 0.9618) Zero Point Vibrational Energy (zpe) 718.7 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 HSEh1PBE/aug-cc-pVTZ
ABC
1.30786 0.04482 0.04334

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.990
Br2 0.000 1.544 -0.085
Br3 0.000 -1.544 -0.085

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.88111.8811
Br21.88113.0872
Br31.88113.0872

picture of dibromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 Br3 110.288
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.582      
2 Br 0.291      
3 Br 0.291      


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 -1.113 1.113
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.366 0.000 0.000
y 0.000 -39.432 0.000
z 0.000 0.000 -44.913
Traceless
 xyz
x 0.807 0.000 0.000
y 0.000 3.708 0.000
z 0.000 0.000 -4.514
Polar
3z2-r2-9.029
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 6.118 0.000 0.000
y 0.000 13.023 0.000
z 0.000 0.000 7.589


<r2> (average value of r2) Å2
<r2> 199.353
(<r2>)1/2 14.119

State 2 (3B1)

Jump to S1C1
Energy calculated at HSEh1PBE/aug-cc-pVTZ
 hartrees
Energy at 0K-5185.713029
Energy at 298.15K-5185.718076
HF Energy-5185.713029
Nuclear repulsion energy317.980596
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 HSEh1PBE/aug-cc-pVTZ
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 536 516 0.01      
2 A1 187 180 0.11      
3 B2 897 863 153.21      

Unscaled Zero Point Vibrational Energy (zpe) 810.2 cm-1
Scaled (by 0.9618) Zero Point Vibrational Energy (zpe) 779.3 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 HSEh1PBE/aug-cc-pVTZ
ABC
2.53789 0.03911 0.03851

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.711
Br2 0.000 1.653 -0.061
Br3 0.000 -1.653 -0.061

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.82391.8239
Br21.82393.3052
Br31.82393.3052

picture of dibromomethylene state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.596      
2 Br 0.298      
3 Br 0.298      


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 -0.446 0.446
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.799 0.000 0.000
y 0.000 -38.657 0.000
z 0.000 0.000 -42.183
Traceless
 xyz
x -2.379 0.000 0.000
y 0.000 3.834 0.000
z 0.000 0.000 -1.455
Polar
3z2-r2-2.910
x2-y2-4.142
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.260 0.000 0.000
y 0.000 12.478 0.000
z 0.000 0.000 6.784


<r2> (average value of r2) Å2
<r2> 220.211
(<r2>)1/2 14.840