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: B3LYP/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 B3LYP/6-311G**
 hartrees
Energy at 0K-2612.723831
Energy at 298.15K-2612.726544
HF Energy-2612.723831
Nuclear repulsion energy69.761673
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 B3LYP/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' 2910 2813 70.23      
2 A' 1158 1119 4.13      
3 A' 659 637 70.05      

Unscaled Zero Point Vibrational Energy (zpe) 2363.1 cm-1
Scaled (by 0.9668) Zero Point Vibrational Energy (zpe) 2284.7 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 B3LYP/6-311G**
ABC
15.44120 0.41764 0.40664

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.026 1.564 0.000
Br2 0.026 -0.318 0.000
H3 -1.068 1.763 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.88251.1124
Br21.88252.3520
H31.11242.3520

picture of bromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 100.327
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.209      
2 Br 0.070      
3 H 0.139      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.495 -0.688 0.000 1.646
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.458 -3.152 0.000
y -3.152 -25.887 0.000
z 0.000 0.000 -23.824
Traceless
 xyz
x -0.602 -3.152 0.000
y -3.152 -1.246 0.000
z 0.000 0.000 1.848
Polar
3z2-r23.696
x2-y20.429
xy-3.152
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.924 -0.307 0.000
y -0.307 6.387 0.000
z 0.000 0.000 2.389


<r2> (average value of r2) Å2
<r2> 38.155
(<r2>)1/2 6.177

State 2 (3A")

Jump to S1C1
Energy calculated at B3LYP/6-311G**
 hartrees
Energy at 0K-2612.719748
Energy at 298.15K-2612.722451
HF Energy-2612.719748
Nuclear repulsion energy70.765999
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 B3LYP/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' 3169 3063 3.92      
2 A' 909 879 5.99      
3 A' 728 703 28.35      

Unscaled Zero Point Vibrational Energy (zpe) 2402.6 cm-1
Scaled (by 0.9668) Zero Point Vibrational Energy (zpe) 2322.9 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 B3LYP/6-311G**
ABC
25.44645 0.42267 0.41576

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.021 1.508 0.000
Br2 0.021 -0.320 0.000
H3 -0.852 2.155 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.82821.0860
Br21.82822.6240
H31.08602.6240

picture of bromomethylene state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.261      
2 Br 0.092      
3 H 0.168      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.794 0.092 0.000 0.800
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.353 -1.783 0.000
y -1.783 -22.317 0.000
z 0.000 0.000 -25.544
Traceless
 xyz
x -0.422 -1.783 0.000
y -1.783 2.631 0.000
z 0.000 0.000 -2.209
Polar
3z2-r2-4.418
x2-y2-2.035
xy-1.783
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.500 -0.174 0.000
y -0.174 5.887 0.000
z 0.000 0.000 2.177


<r2> (average value of r2) Å2
<r2> 37.653
(<r2>)1/2 6.136