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 CHBr (bromomethylene)

using model chemistry: HSEh1PBE/6-311G*

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 HSEh1PBE/6-311G*
 hartrees
Energy at 0K-2612.321226
Energy at 298.15K-2612.323954
HF Energy-2612.321226
Nuclear repulsion energy70.412277
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/6-311G*
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' 2935 2816 74.38      
2 A' 1179 1132 3.77      
3 A' 692 664 73.30      

Unscaled Zero Point Vibrational Energy (zpe) 2403.0 cm-1
Scaled (by 0.9596) Zero Point Vibrational Energy (zpe) 2305.9 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/6-311G*
ABC
15.49211 0.42598 0.41458

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.026 1.547 0.000
Br2 0.026 -0.315 0.000
H3 -1.067 1.757 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.86281.1133
Br21.86282.3436
H31.11332.3436

picture of bromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 100.881
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.321      
2 Br 0.091      
3 H 0.230      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.539 -0.761 0.000 1.717
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.364 -3.234 0.000
y -3.234 -25.930 0.000
z 0.000 0.000 -23.775
Traceless
 xyz
x -0.511 -3.234 0.000
y -3.234 -1.361 0.000
z 0.000 0.000 1.872
Polar
3z2-r23.744
x2-y20.567
xy-3.234
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.897 -0.294 0.000
y -0.294 6.275 0.000
z 0.000 0.000 2.370


<r2> (average value of r2) Å2
<r2> 37.732
(<r2>)1/2 6.143

State 2 (3A")

Jump to S1C1
Energy calculated at HSEh1PBE/6-311G*
 hartrees
Energy at 0K-2612.324173
Energy at 298.15K-2612.326887
HF Energy-2612.324173
Nuclear repulsion energy71.240249
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/6-311G*
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' 3210 3080 5.48      
2 A' 923 885 5.26      
3 A' 755 724 27.90      

Unscaled Zero Point Vibrational Energy (zpe) 2443.8 cm-1
Scaled (by 0.9596) Zero Point Vibrational Energy (zpe) 2345.1 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 HSEh1PBE/6-311G*
ABC
25.65701 0.42847 0.42143

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.021 1.497 0.000
Br2 0.021 -0.318 0.000
H3 -0.849 2.147 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.81501.0853
Br21.81502.6135
H31.08532.6135

picture of bromomethylene state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.361      
2 Br 0.094      
3 H 0.267      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.806 0.189 0.000 0.827
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.290 -1.839 0.000
y -1.839 -22.045 0.000
z 0.000 0.000 -25.525
Traceless
 xyz
x -0.505 -1.839 0.000
y -1.839 2.862 0.000
z 0.000 0.000 -2.358
Polar
3z2-r2-4.715
x2-y2-2.244
xy-1.839
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.465 -0.162 0.000
y -0.162 5.706 0.000
z 0.000 0.000 2.151


<r2> (average value of r2) Å2
<r2> 37.292
(<r2>)1/2 6.107