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

using model chemistry: PBE1PBE/6-311G*

19 10 17 12 22

States and conformations

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

Conformer 1 (CS)

Jump to S1C2
Energy calculated at PBE1PBE/6-311G*
 hartrees
Energy at 0K-2613.016996
Energy at 298.15K-2613.020416
HF Energy-2613.016996
Nuclear repulsion energy80.882189
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 PBE1PBE/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' 3193 3060 7.11      
2 A' 1398 1340 17.59      
3 A' 727 697 18.63      
4 A' 27 26 94.31      
5 A" 3350 3211 0.00      
6 A" 944 905 3.05      

Unscaled Zero Point Vibrational Energy (zpe) 4819.4 cm-1
Scaled (by 0.9585) Zero Point Vibrational Energy (zpe) 4619.4 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 PBE1PBE/6-311G*
ABC
9.19722 0.38012 0.36503

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.000 -1.481 0.000
Br2 -0.000 0.367 0.000
H3 0.000 -1.986 0.954
H4 0.000 -1.986 -0.954

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.84811.07911.0791
Br21.84812.53902.5390
H31.07912.53901.9072
H41.07912.53901.9072

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 117.907 Br2 C1 H4 117.907
H3 C1 H4 124.187
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.581      
2 Br 0.037      
3 H 0.272      
4 H 0.272      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 -1.036 0.000 1.036
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.447 -0.000 0.000
y -0.000 -21.648 0.000
z 0.000 0.000 -24.267
Traceless
 xyz
x -3.489 -0.000 0.000
y -0.000 3.709 0.000
z 0.000 0.000 -0.220
Polar
3z2-r2-0.440
x2-y2-4.799
xy-0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.253 0.000 0.000
y 0.000 5.600 0.000
z 0.000 0.000 2.850


<r2> (average value of r2) Å2
<r2> 42.649
(<r2>)1/2 6.531

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at PBE1PBE/6-311G*
 hartrees
Energy at 0K-2613.017025
Energy at 298.15K 
HF Energy-2613.017025
Nuclear repulsion energy80.887016
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 PBE1PBE/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 A1 3192 3059 7.11 109.93 0.14 0.24
2 A1 1398 1340 17.54 1.04 0.74 0.85
3 A1 723 693 18.67 7.52 0.26 0.41
4 B1 20 19 94.30 0.00 0.75 0.86
5 B2 3349 3210 0.00 56.85 0.75 0.86
6 B2 943 904 3.06 4.04 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4812.0 cm-1
Scaled (by 0.9585) Zero Point Vibrational Energy (zpe) 4612.3 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 PBE1PBE/6-311G*
ABC
9.20037 0.38016 0.36507

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.481
Br2 0.000 0.000 0.367
H3 0.000 0.953 -1.986
H4 0.000 -0.953 -1.986

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.84791.07901.0790
Br21.84792.53902.5390
H31.07902.53901.9069
H41.07902.53901.9069

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 117.922 Br2 C1 H4 117.922
H3 C1 H4 124.156
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.581      
2 Br 0.037      
3 H 0.272      
4 H 0.272      


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 -1.035 1.035
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.446 0.000 0.000
y 0.000 -24.268 0.000
z 0.000 0.000 -21.647
Traceless
 xyz
x -3.488 0.000 0.000
y 0.000 -0.221 0.000
z 0.000 0.000 3.710
Polar
3z2-r27.420
x2-y2-2.178
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.253 0.000 0.000
y 0.000 2.850 0.000
z 0.000 0.000 5.599


<r2> (average value of r2) Å2
<r2> 42.647
(<r2>)1/2 6.530