return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CBr2 (dibromomethylene)

using model chemistry: B3LYP/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-64.296044
Energy at 298.15K-64.300898
HF Energy-64.296044
Nuclear repulsion energy29.737766
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/LANL2DZ
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 535 514 34.59      
2 A1 168 162 0.42      
3 B2 547 525 320.12      

Unscaled Zero Point Vibrational Energy (zpe) 624.9 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 600.6 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 B3LYP/LANL2DZ
ABC
1.15166 0.03838 0.03714

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/LANL2DZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.055
Br2 0.000 1.668 -0.090
Br3 0.000 -1.668 -0.090

Atom - Atom Distances (Å)
  C1 Br2 Br3
C12.02372.0237
Br22.02373.3362
Br32.02373.3362

picture of dibromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 Br3 111.037
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.098      
2 Br 0.049      
3 Br 0.049      


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 -0.846 0.846
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.548 0.000 0.000
y 0.000 -35.860 0.000
z 0.000 0.000 -38.754
Traceless
 xyz
x 1.760 0.000 0.000
y 0.000 1.291 0.000
z 0.000 0.000 -3.050
Polar
3z2-r2-6.100
x2-y20.313
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.503 0.000 0.000
y 0.000 11.556 0.000
z 0.000 0.000 4.157


<r2> (average value of r2) Å2
<r2> 68.687
(<r2>)1/2 8.288

State 2 (3B1)

Jump to S1C1
Energy calculated at B3LYP/LANL2DZ
 hartrees
Energy at 0K-64.275276
Energy at 298.15K-64.280172
HF Energy-64.275276
Nuclear repulsion energy30.425244
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/LANL2DZ
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 451 434 2.59      
2 A1 167 161 0.13      
3 B2 757 727 181.47      

Unscaled Zero Point Vibrational Energy (zpe) 687.5 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 660.8 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/LANL2DZ
ABC
2.25424 0.03490 0.03437

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/LANL2DZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.754
Br2 0.000 1.749 -0.065
Br3 0.000 -1.749 -0.065

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.93151.9315
Br21.93153.4986
Br31.93153.4986

picture of dibromomethylene state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.179      
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 -0.653 0.653
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.008 0.000 0.000
y 0.000 -33.392 0.000
z 0.000 0.000 -36.457
Traceless
 xyz
x -2.083 0.000 0.000
y 0.000 3.340 0.000
z 0.000 0.000 -1.257
Polar
3z2-r2-2.514
x2-y2-3.616
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.189 0.000 0.000
y 0.000 10.717 0.000
z 0.000 0.000 2.863


<r2> (average value of r2) Å2
<r2> 68.560
(<r2>)1/2 8.280