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All results from a given calculation for CBr2 (dibromomethylene)

using model chemistry: B2PLYP/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 B2PLYP/cc-pVDZ
 hartrees
Energy at 0K-5185.353027
Energy at 298.15K-5185.358030
HF Energy-5185.222074
Nuclear repulsion energy323.212810
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 B2PLYP/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 602 577 18.16      
2 A1 196 188 0.59      
3 B2 640 613 341.51      

Unscaled Zero Point Vibrational Energy (zpe) 719.0 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 688.6 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 B2PLYP/cc-pVDZ
ABC
1.26191 0.04352 0.04207

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.008
Br2 0.000 1.566 -0.086
Br3 0.000 -1.566 -0.086

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.91101.9110
Br21.91103.1330
Br31.91103.1330

picture of dibromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 Br3 110.118
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.152      
2 Br 0.076      
3 Br 0.076      


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 -41.183 0.000 0.000
y 0.000 -39.404 0.000
z 0.000 0.000 -44.580
Traceless
 xyz
x 0.808 0.000 0.000
y 0.000 3.478 0.000
z 0.000 0.000 -4.286
Polar
3z2-r2-8.573
x2-y2-1.780
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.247 0.000 0.000
y 0.000 10.984 0.000
z 0.000 0.000 4.961


<r2> (average value of r2) Å2
<r2> 204.453
(<r2>)1/2 14.299

State 2 (3B1)

Jump to S1C1
Energy calculated at B2PLYP/cc-pVDZ
 hartrees
Energy at 0K-5185.330451
Energy at 298.15K-5185.335480
HF Energy-5185.213404
Nuclear repulsion energy314.302666
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 B2PLYP/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 532 509 0.31      
2 A1 185 177 0.13      
3 B2 862 825 176.56      

Unscaled Zero Point Vibrational Energy (zpe) 789.2 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 755.9 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 B2PLYP/cc-pVDZ
ABC
2.41116 0.03829 0.03769

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.729
Br2 0.000 1.670 -0.063
Br3 0.000 -1.670 -0.063

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.84841.8484
Br21.84843.3404
Br31.84843.3404

picture of dibromomethylene state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.181      
2 Br 0.091      
3 Br 0.091      


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 -0.582 0.582
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.686 0.000 0.000
y 0.000 -38.088 0.000
z 0.000 0.000 -41.990
Traceless
 xyz
x -2.647 0.000 0.000
y 0.000 4.250 0.000
z 0.000 0.000 -1.603
Polar
3z2-r2-3.206
x2-y2-4.598
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.095 0.000 0.000
y 0.000 10.211 0.000
z 0.000 0.000 4.107


<r2> (average value of r2) Å2
<r2> 224.295
(<r2>)1/2 14.976