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All results from a given calculation for CHBr (bromomethylene)

using model chemistry: mPW1PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
2 1 yes CS 3A"

State 1 (1A')

Jump to S2C1
Energy calculated at mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-2610.587267
Energy at 298.15K-2610.590011
HF Energy-2610.587267
Nuclear repulsion energy71.244835
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 mPW1PW91/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 2942 2809 48.22      
2 A' 1162 1110 4.66      
3 A' 731 698 54.87      

Unscaled Zero Point Vibrational Energy (zpe) 2417.7 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 2308.2 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 mPW1PW91/6-31G(2df,p)
ABC
15.51795 0.43679 0.42483

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.026 1.527 0.000
Br2 0.026 -0.312 0.000
H3 -1.067 1.742 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.83881.1138
Br21.83882.3266
H31.11382.3266

picture of bromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 101.134
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.285      
2 Br 0.093      
3 H 0.192      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.260 -0.687 0.000 1.435
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.772 -2.864 0.000
y -2.864 -25.265 0.000
z 0.000 0.000 -23.351
Traceless
 xyz
x -0.465 -2.864 0.000
y -2.864 -1.203 0.000
z 0.000 0.000 1.668
Polar
3z2-r23.336
x2-y20.492
xy-2.864
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.800 -0.297 0.000
y -0.297 6.242 0.000
z 0.000 0.000 3.329


<r2> (average value of r2) Å2
<r2> 36.874
(<r2>)1/2 6.072

State 2 (3A")

Jump to S1C1
Energy calculated at mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-2610.590406
Energy at 298.15K-2610.593135
HF Energy-2610.590406
Nuclear repulsion energy72.021028
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 mPW1PW91/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3241 3094 5.77      
2 A' 916 875 4.33      
3 A' 798 762 21.57      

Unscaled Zero Point Vibrational Energy (zpe) 2477.3 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 2365.1 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 mPW1PW91/6-31G(2df,p)
ABC
26.49093 0.43785 0.43073

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.020 1.478 0.000
Br2 0.020 -0.315 0.000
H3 -0.836 2.142 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.79311.0838
Br21.79312.6021
H31.08382.6021

picture of bromomethylene state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.300      
2 Br 0.100      
3 H 0.200      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.667 0.264 0.000 0.717
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.808 -1.620 0.000
y -1.620 -21.647 0.000
z 0.000 0.000 -24.892
Traceless
 xyz
x -0.538 -1.620 0.000
y -1.620 2.703 0.000
z 0.000 0.000 -2.165
Polar
3z2-r2-4.329
x2-y2-2.161
xy-1.620
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.423 -0.218 0.000
y -0.218 5.877 0.000
z 0.000 0.000 3.152


<r2> (average value of r2) Å2
<r2> 36.533
(<r2>)1/2 6.044