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

using model chemistry: ROHF/6-31G**

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/6-31G**
 hartrees
Energy at 0K-2608.870906
Energy at 298.15K-2608.874944
HF Energy-2608.870906
Nuclear repulsion energy80.112996
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/6-31G**
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' 3330 2845 11.47      
2 A' 1506 1287 39.04      
3 A' 710 606 23.64      
4 A' 478 409 45.24      
5 A" 3485 2978 0.08      
6 A" 1010 863 0.63      

Unscaled Zero Point Vibrational Energy (zpe) 5259.3 cm-1
Scaled (by 0.8546) Zero Point Vibrational Energy (zpe) 4494.6 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/6-31G**
ABC
9.16645 0.37160 0.35805

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.009 1.503 0.000
Br2 -0.009 -0.371 0.000
H3 0.187 1.978 0.939
H4 0.187 1.978 -0.939

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.87411.07021.0702
Br21.87412.53682.5368
H31.07022.53681.8783
H41.07022.53681.8783

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 116.302 Br2 C1 H4 116.302
H3 C1 H4 122.689
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.215      
2 Br -0.125      
3 H 0.170      
4 H 0.170      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.317 1.517 0.000 1.549
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.164 0.681 0.000
y 0.681 -21.188 0.000
z 0.000 0.000 -24.430
Traceless
 xyz
x -3.356 0.681 0.000
y 0.681 4.109 0.000
z 0.000 0.000 -0.754
Polar
3z2-r2-1.507
x2-y2-4.976
xy0.681
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> 42.976
(<r2>)1/2 6.556

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at ROHF/6-31G**
 hartrees
Energy at 0K-2608.865403
Energy at 298.15K 
HF Energy-2608.865403
Nuclear repulsion energy80.292153
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/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3363 2874 7.83      
2 A1 1509 1290 43.05      
3 A1 722 617 20.47      
4 B1 539i 461i 65.46      
5 B2 3528 3015 0.24      
6 B2 999 854 0.83      

Unscaled Zero Point Vibrational Energy (zpe) 4791.2 cm-1
Scaled (by 0.8546) Zero Point Vibrational Energy (zpe) 4094.6 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/6-31G**
ABC
9.35677 0.37331 0.35898

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

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 0.370
H3 0.000 0.945 -1.992
H4 0.000 -0.945 -1.992

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.86751.06711.0671
Br21.86752.54462.5446
H31.06712.54461.8909
H41.06712.54461.8909

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 117.632 Br2 C1 H4 117.632
H3 C1 H4 124.737
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.236      
2 Br -0.119      
3 H 0.177      
4 H 0.177      


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 -1.528 1.528
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.281 0.000 0.000
y 0.000 -24.330 -0.001
z 0.000 -0.001 -21.032
Traceless
 xyz
x -3.600 0.000 0.000
y 0.000 -0.674 -0.001
z 0.000 -0.001 4.274
Polar
3z2-r28.548
x2-y2-1.951
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> 42.890
(<r2>)1/2 6.549