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All results from a given calculation for CHBr (bromomethylene)

using model chemistry: mPW1PW91/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-2612.878485
Energy at 298.15K-2612.881219
HF Energy-2612.878485
Nuclear repulsion energy70.495368
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/aug-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 A' 2942 2819 44.18      
2 A' 1157 1109 3.95      
3 A' 700 671 64.46      

Unscaled Zero Point Vibrational Energy (zpe) 2399.1 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 2299.1 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/aug-cc-pVDZ
ABC
15.31634 0.42738 0.41578

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.026 1.545 0.000
Br2 0.026 -0.315 0.000
H3 -1.073 1.755 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.85961.1196
Br21.85962.3441
H31.11962.3441

picture of bromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 100.840
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.416      
2 Br 0.359      
3 H 0.057      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.337 -0.701 0.000 1.510
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.484 -3.146 0.000
y -3.146 -25.746 0.000
z 0.000 0.000 -23.972
Traceless
 xyz
x -0.625 -3.146 0.000
y -3.146 -1.018 0.000
z 0.000 0.000 1.643
Polar
3z2-r23.287
x2-y20.262
xy-3.146
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.402 -0.069 0.000
y -0.069 7.206 0.000
z 0.000 0.000 3.969


<r2> (average value of r2) Å2
<r2> 37.705
(<r2>)1/2 6.140

State 2 (3A")

Jump to S1C1
Energy calculated at mPW1PW91/aug-cc-pVDZ
 hartrees
Energy at 0K-2612.879507
Energy at 298.15K-2612.882223
HF Energy-2612.879507
Nuclear repulsion energy71.165415
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/aug-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 A' 3214 3080 4.65      
2 A' 906 868 3.83      
3 A' 760 729 25.91      

Unscaled Zero Point Vibrational Energy (zpe) 2439.8 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 2338.0 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/aug-cc-pVDZ
ABC
25.54909 0.42764 0.42060

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.021 1.498 0.000
Br2 0.021 -0.318 0.000
H3 -0.851 2.155 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.81591.0919
Br21.81592.6227
H31.09192.6227

picture of bromomethylene state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.257      
2 Br 0.405      
3 H -0.148      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.691 0.231 0.000 0.729
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.407 -1.714 0.000
y -1.714 -22.100 0.000
z 0.000 0.000 -25.672
Traceless
 xyz
x -0.521 -1.714 0.000
y -1.714 2.940 0.000
z 0.000 0.000 -2.419
Polar
3z2-r2-4.838
x2-y2-2.307
xy-1.714
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.070 -0.093 0.000
y -0.093 6.697 0.000
z 0.000 0.000 4.017


<r2> (average value of r2) Å2
<r2> 37.418
(<r2>)1/2 6.117