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All results from a given calculation for CH2Br (bromomethyl radical)

using model chemistry: PBEPBE/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
1 2 no C2V 2A1

Conformer 1 (CS)

Jump to S1C2
Energy calculated at PBEPBE/STO-3G
 hartrees
Energy at 0K-2584.265413
Energy at 298.15K-2584.269339
HF Energy-2584.265413
Nuclear repulsion energy80.071802
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 PBEPBE/STO-3G
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' 3303 3018 0.63      
2 A' 1511 1380 18.70      
3 A' 803 734 21.00      
4 A' 418 382 35.45      
5 A" 3489 3187 0.56      
6 A" 1001 914 0.80      

Unscaled Zero Point Vibrational Energy (zpe) 5261.7 cm-1
Scaled (by 0.9136) Zero Point Vibrational Energy (zpe) 4807.1 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 PBEPBE/STO-3G
ABC
8.92987 0.37247 0.35867

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.010 1.493 0.000
Br2 -0.010 -0.371 0.000
H3 0.205 2.009 0.949
H4 0.205 2.009 -0.949

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.86391.10141.1014
Br21.86392.57132.5713
H31.10142.57131.8977
H41.10142.57131.8977

picture of bromomethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 117.948 Br2 C1 H4 117.948
H3 C1 H4 118.976
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.228      
2 Br 0.059      
3 H 0.085      
4 H 0.085      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.295 0.588 0.000 0.658
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.027 0.547 0.000
y 0.547 -21.406 0.000
z 0.000 0.000 -22.202
Traceless
 xyz
x -1.223 0.547 0.000
y 0.547 1.208 0.000
z 0.000 0.000 0.015
Polar
3z2-r20.029
x2-y2-1.620
xy0.547
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.461 0.066 0.000
y 0.066 3.080 0.000
z 0.000 0.000 0.906


<r2> (average value of r2) Å2
<r2> 42.025
(<r2>)1/2 6.483

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at PBEPBE/STO-3G
 hartrees
Energy at 0K-2584.265139
Energy at 298.15K 
HF Energy-2584.265139
Nuclear repulsion energy80.204044
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 PBEPBE/STO-3G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3323 3036 0.87 36.50 0.13 0.23
2 A1 1502 1372 21.02 7.46 0.75 0.86
3 A1 791 723 19.87 7.34 0.34 0.50
4 B1 306i 279i 51.25 0.07 0.75 0.86
5 B2 3513 3209 0.08 28.25 0.75 0.86
6 B2 981 896 0.61 4.48 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4901.9 cm-1
Scaled (by 0.9136) Zero Point Vibrational Energy (zpe) 4478.4 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 PBEPBE/STO-3G
ABC
9.15262 0.37366 0.35900

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.487
Br2 0.000 0.000 0.371
H3 0.000 0.956 -2.029
H4 0.000 -0.956 -2.029

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.85811.09871.0987
Br21.85812.58312.5831
H31.09872.58311.9118
H41.09872.58311.9118

picture of bromomethyl radical state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 119.538 Br2 C1 H4 119.538
H3 C1 H4 120.924
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.234      
2 Br 0.063      
3 H 0.086      
4 H 0.086      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.597 0.597
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.096 0.000 0.000
y 0.000 -22.147 0.000
z 0.000 0.000 -21.291
Traceless
 xyz
x -1.378 0.000 0.000
y 0.000 0.047 0.000
z 0.000 0.000 1.331
Polar
3z2-r22.662
x2-y2-0.950
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.443 0.000 0.000
y 0.000 0.902 0.000
z 0.000 0.000 3.039


<r2> (average value of r2) Å2
<r2> 41.997
(<r2>)1/2 6.481