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: HF/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 HF/6-311G**
 hartrees
Energy at 0K-2610.695719
Energy at 298.15K-2610.698454
HF Energy-2610.695719
Nuclear repulsion energy70.146214
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 HF/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' 3172 2881 39.88      
2 A' 1233 1120 3.67      
3 A' 688 625 102.32      

Unscaled Zero Point Vibrational Energy (zpe) 2546.5 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 2313.5 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 HF/6-311G**
ABC
16.27643 0.42139 0.41075

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.025 1.554 0.000
Br2 0.025 -0.317 0.000
H3 -1.042 1.788 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.87101.0931
Br21.87102.3604
H31.09312.3604

picture of bromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 102.369
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.114      
2 Br -0.018      
3 H 0.132      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.654 -0.117 0.000 1.658
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.640 -3.506 0.000
y -3.506 -25.442 0.000
z 0.000 0.000 -24.083
Traceless
 xyz
x -0.877 -3.506 0.000
y -3.506 -0.581 0.000
z 0.000 0.000 1.458
Polar
3z2-r22.917
x2-y2-0.197
xy-3.506
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.690 -0.307 0.000
y -0.307 5.860 0.000
z 0.000 0.000 2.405


<r2> (average value of r2) Å2
<r2> 37.966
(<r2>)1/2 6.162

State 2 (3A")

Jump to S1C1
Energy calculated at HF/6-311G**
 hartrees
Energy at 0K-2610.724036
Energy at 298.15K-2610.726769
HF Energy-2610.724036
Nuclear repulsion energy70.397609
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 HF/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' 3361 3054 5.09      
2 A' 999 907 2.67      
3 A' 755 686 23.96      

Unscaled Zero Point Vibrational Energy (zpe) 2557.7 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 2323.7 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 HF/6-311G**
ABC
25.78835 0.41782 0.41116

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.021 1.519 0.000
Br2 0.021 -0.322 0.000
H3 -0.845 2.153 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.84051.0736
Br21.84052.6223
H31.07362.6223

picture of bromomethylene state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.169      
2 Br 0.005      
3 H 0.164      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.669 0.836 0.000 1.070
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.601 -1.561 0.000
y -1.561 -21.506 0.000
z 0.000 0.000 -25.704
Traceless
 xyz
x -0.996 -1.561 0.000
y -1.561 3.646 0.000
z 0.000 0.000 -2.650
Polar
3z2-r2-5.300
x2-y2-3.095
xy-1.561
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.369 -0.218 0.000
y -0.218 5.155 0.000
z 0.000 0.000 2.081


<r2> (average value of r2) Å2
<r2> 37.784
(<r2>)1/2 6.147