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: LSDA/6-31G**

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 LSDA/6-31G**
 hartrees
Energy at 0K-2607.228555
Energy at 298.15K-2607.231277
HF Energy-2607.228555
Nuclear repulsion energy70.653113
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 LSDA/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 A' 2793 2741 71.11      
2 A' 1130 1109 4.27      
3 A' 690 677 49.85      

Unscaled Zero Point Vibrational Energy (zpe) 2306.1 cm-1
Scaled (by 0.9813) Zero Point Vibrational Energy (zpe) 2263.0 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 LSDA/6-31G**
ABC
14.82028 0.43017 0.41803

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.027 1.542 0.000
Br2 0.027 -0.314 0.000
H3 -1.090 1.725 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.85591.1313
Br21.85592.3244
H31.13132.3244

picture of bromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 99.300
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.158      
2 Br 0.011      
3 H 0.147      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.322 -0.934 0.000 1.619
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.931 -2.845 0.000
y -2.845 -25.618 0.000
z 0.000 0.000 -23.340
Traceless
 xyz
x -0.452 -2.845 0.000
y -2.845 -1.483 0.000
z 0.000 0.000 1.935
Polar
3z2-r23.870
x2-y20.687
xy-2.845
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.255 -0.358 0.000
y -0.358 5.926 0.000
z 0.000 0.000 2.584


<r2> (average value of r2) Å2
<r2> 37.290
(<r2>)1/2 6.107

State 2 (3A")

Jump to S1C1
Energy calculated at LSDA/6-31G**
 hartrees
Energy at 0K-2607.222045
Energy at 298.15K-2607.224748
HF Energy-2607.222045
Nuclear repulsion energy71.876052
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 LSDA/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 A' 3135 3077 4.88      
2 A' 864 848 8.99      
3 A' 767 753 23.67      

Unscaled Zero Point Vibrational Energy (zpe) 2383.4 cm-1
Scaled (by 0.9813) Zero Point Vibrational Energy (zpe) 2338.9 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 LSDA/6-31G**
ABC
24.73679 0.43703 0.42944

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.021 1.482 0.000
Br2 0.021 -0.315 0.000
H3 -0.865 2.128 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.79661.0964
Br21.79662.5985
H31.09642.5985

picture of bromomethylene state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.187      
2 Br 0.013      
3 H 0.174      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.812 -0.098 0.000 0.817
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.774 -1.851 0.000
y -1.851 -22.079 0.000
z 0.000 0.000 -24.970
Traceless
 xyz
x -0.249 -1.851 0.000
y -1.851 2.293 0.000
z 0.000 0.000 -2.044
Polar
3z2-r2-4.087
x2-y2-1.695
xy-1.851
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.740 -0.250 0.000
y -0.250 5.668 0.000
z 0.000 0.000 2.339


<r2> (average value of r2) Å2
<r2> 36.683
(<r2>)1/2 6.057