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All results from a given calculation for CBr2 (dibromomethylene)

using model chemistry: B3LYP/6-31G*

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 B3LYP/6-31G*
 hartrees
Energy at 0K-5181.400531
Energy at 298.15K-5181.405502
HF Energy-5181.400531
Nuclear repulsion energy322.844263
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 B3LYP/6-31G*
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 596 572 17.11      
2 A1 195 187 0.52      
3 B2 610 585 317.15      

Unscaled Zero Point Vibrational Energy (zpe) 700.1 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 672.3 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 B3LYP/6-31G*
ABC
1.23242 0.04355 0.04206

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.020
Br2 0.000 1.566 -0.087
Br3 0.000 -1.566 -0.087

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.91811.9181
Br21.91813.1321
Br31.91813.1321

picture of dibromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 Br3 109.464
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.023      
2 Br -0.011      
3 Br -0.011      


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 -1.011 1.011
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.819 0.000 0.000
y 0.000 -39.268 0.000
z 0.000 0.000 -43.922
Traceless
 xyz
x 0.776 0.000 0.000
y 0.000 3.102 0.000
z 0.000 0.000 -3.879
Polar
3z2-r2-7.757
x2-y2-1.551
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.923 0.000 0.000
y 0.000 11.147 0.000
z 0.000 0.000 5.332


<r2> (average value of r2) Å2
<r2> 204.268
(<r2>)1/2 14.292

State 2 (3B1)

Jump to S1C1
Energy calculated at B3LYP/6-31G*
 hartrees
Energy at 0K-5181.376443
Energy at 298.15K-5181.381439
HF Energy-5181.376443
Nuclear repulsion energy315.076118
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 B3LYP/6-31G*
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 519 499 0.26      
2 A1 182 175 0.10      
3 B2 827 794 168.71      

Unscaled Zero Point Vibrational Energy (zpe) 764.1 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 733.8 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 B3LYP/6-31G*
ABC
2.29975 0.03863 0.03799

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.747
Br2 0.000 1.663 -0.064
Br3 0.000 -1.663 -0.064

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.84991.8499
Br21.84993.3255
Br31.84993.3255

picture of dibromomethylene state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.013      
2 Br 0.006      
3 Br 0.006      


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 -0.522 0.522
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.239 0.000 0.000
y 0.000 -37.937 0.000
z 0.000 0.000 -41.484
Traceless
 xyz
x -2.528 0.000 0.000
y 0.000 3.925 0.000
z 0.000 0.000 -1.397
Polar
3z2-r2-2.793
x2-y2-4.302
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.814 0.000 0.000
y 0.000 10.521 0.000
z 0.000 0.000 4.639


<r2> (average value of r2) Å2
<r2> 222.493
(<r2>)1/2 14.916