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

using model chemistry: ROHF/6-311G*

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 ROHF/6-311G*
 hartrees
Energy at 0K-2611.356672
Energy at 298.15K-2611.360725
HF Energy-2611.356672
Nuclear repulsion energy80.087967
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 ROHF/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' 3314 2835 14.92      
2 A' 1505 1287 36.56      
3 A' 715 612 22.86      
4 A' 490 419 52.63      
5 A" 3465 2965 0.91      
6 A" 1013 866 1.21      

Unscaled Zero Point Vibrational Energy (zpe) 5250.6 cm-1
Scaled (by 0.8556) Zero Point Vibrational Energy (zpe) 4492.4 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 ROHF/6-311G*
ABC
9.18776 0.37126 0.35782

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.009 1.504 0.000
Br2 -0.009 -0.371 0.000
H3 0.192 1.980 0.937
H4 0.192 1.980 -0.937

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.87451.07041.0704
Br21.87452.53882.5388
H31.07042.53881.8745
H41.07042.53881.8745

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 116.428 Br2 C1 H4 116.428
H3 C1 H4 122.233
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.499      
2 Br -0.032      
3 H 0.266      
4 H 0.266      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.349 1.497 0.000 1.537
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.567 0.735 0.000
y 0.735 -21.563 0.000
z 0.000 0.000 -24.674
Traceless
 xyz
x -3.448 0.735 0.000
y 0.735 4.058 0.000
z 0.000 0.000 -0.609
Polar
3z2-r2-1.218
x2-y2-5.004
xy0.735
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 43.212
(<r2>)1/2 6.574

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at ROHF/6-311G*
 hartrees
Energy at 0K-2611.351010
Energy at 298.15K 
HF Energy-2611.351010
Nuclear repulsion energy80.270124
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 ROHF/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 3345 2862 11.43      
2 A1 1507 1289 40.27      
3 A1 728 623 19.07      
4 B1 548i 469i 80.34      
5 B2 3507 3001 0.03      
6 B2 1003 858 1.51      

Unscaled Zero Point Vibrational Energy (zpe) 4770.8 cm-1
Scaled (by 0.8556) Zero Point Vibrational Energy (zpe) 4081.9 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 ROHF/6-311G*
ABC
9.38470 0.37301 0.35875

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.497
Br2 0.000 0.000 0.371
H3 0.000 0.944 -1.995
H4 0.000 -0.944 -1.995

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.86771.06741.0674
Br21.86772.54732.5473
H31.06742.54731.8880
H41.06742.54731.8880

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 117.820 Br2 C1 H4 117.820
H3 C1 H4 124.360
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.524      
2 Br -0.024      
3 H 0.274      
4 H 0.274      


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 -1.504 1.504
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.712 0.000 0.000
y 0.000 -24.574 -0.001
z 0.000 -0.001 -21.404
Traceless
 xyz
x -3.723 0.000 0.000
y 0.000 -0.516 -0.001
z 0.000 -0.001 4.239
Polar
3z2-r28.478
x2-y2-2.138
xy0.000
xz0.000
yz-0.001


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


<r2> (average value of r2) Å2
<r2> 43.134
(<r2>)1/2 6.568