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All results from a given calculation for CBr2 (dibromomethylene)

using model chemistry: HSEh1PBE/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 HSEh1PBE/6-31G**
 hartrees
Energy at 0K-5180.643618
Energy at 298.15K-5180.648640
HF Energy-5180.643618
Nuclear repulsion energy326.838090
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/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 617 589 17.42      
2 A1 202 193 0.45      
3 B2 652 622 318.08      

Unscaled Zero Point Vibrational Energy (zpe) 735.2 cm-1
Scaled (by 0.9543) Zero Point Vibrational Energy (zpe) 701.6 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 HSEh1PBE/6-31G**
ABC
1.25785 0.04466 0.04313

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.010
Br2 0.000 1.546 -0.087
Br3 0.000 -1.546 -0.087

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.89561.8956
Br21.89563.0929
Br31.89563.0929

picture of dibromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 Br3 109.336
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.012      
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 -1.105 1.105
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.802 0.000 0.000
y 0.000 -39.068 0.000
z 0.000 0.000 -44.053
Traceless
 xyz
x 0.758 0.000 0.000
y 0.000 3.360 0.000
z 0.000 0.000 -4.118
Polar
3z2-r2-8.236
x2-y2-1.735
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.945 0.000 0.000
y 0.000 10.937 0.000
z 0.000 0.000 5.320


<r2> (average value of r2) Å2
<r2> 199.848
(<r2>)1/2 14.137

State 2 (3B1)

Jump to S1C1
Energy calculated at HSEh1PBE/6-31G**
 hartrees
Energy at 0K-5180.625852
Energy at 298.15K-5180.630892
HF Energy-5180.625852
Nuclear repulsion energy318.378217
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/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 543 518 0.34      
2 A1 188 179 0.06      
3 B2 877 837 162.17      

Unscaled Zero Point Vibrational Energy (zpe) 804.0 cm-1
Scaled (by 0.9543) Zero Point Vibrational Energy (zpe) 767.3 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/6-31G**
ABC
2.35658 0.03943 0.03878

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.738
Br2 0.000 1.646 -0.063
Br3 0.000 -1.646 -0.063

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.83031.8303
Br21.83033.2915
Br31.83033.2915

picture of dibromomethylene state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/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 -0.495 0.495
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.247 0.000 0.000
y 0.000 -37.915 0.000
z 0.000 0.000 -41.481
Traceless
 xyz
x -2.549 0.000 0.000
y 0.000 3.949 0.000
z 0.000 0.000 -1.400
Polar
3z2-r2-2.800
x2-y2-4.332
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.837 0.000 0.000
y 0.000 10.208 0.000
z 0.000 0.000 4.631


<r2> (average value of r2) Å2
<r2> 218.462
(<r2>)1/2 14.780