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

using model chemistry: PBEPBE/TZVP

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 PBEPBE/TZVP
 hartrees
Energy at 0K-2612.964909
Energy at 298.15K-2612.968606
HF Energy-2612.964909
Nuclear repulsion energy80.354488
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/TZVP
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' 3112 3077 3.68      
2 A' 1342 1327 14.14      
3 A' 698 690 17.71      
4 A' 199 197 95.00      
5 A" 3268 3232 0.31      
6 A" 907 897 2.75      

Unscaled Zero Point Vibrational Energy (zpe) 4762.9 cm-1
Scaled (by 0.9888) Zero Point Vibrational Energy (zpe) 4709.6 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 PBEPBE/TZVP
ABC
9.04690 0.37524 0.36029

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.491 0.000
Br2 0.000 -0.370 0.000
H3 -0.000 1.994 0.961
H4 -0.000 1.994 -0.961

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.86101.08511.0851
Br21.86102.55212.5521
H31.08512.55211.9230
H41.08512.55211.9230

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 117.618 Br2 C1 H4 117.618
H3 C1 H4 124.764
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.330      
2 Br -0.010      
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
  -0.001 0.844 0.000 0.844
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.603 -0.001 0.000
y -0.001 -22.084 0.000
z 0.000 0.000 -24.439
Traceless
 xyz
x -3.341 -0.001 0.000
y -0.001 3.436 0.000
z 0.000 0.000 -0.096
Polar
3z2-r2-0.191
x2-y2-4.518
xy-0.001
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.828 0.000 0.000
y 0.000 6.249 0.000
z 0.000 0.000 3.216


<r2> (average value of r2) Å2
<r2> 43.156
(<r2>)1/2 6.569

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at PBEPBE/TZVP
 hartrees
Energy at 0K-2612.964909
Energy at 298.15K 
HF Energy-2612.964909
Nuclear repulsion energy80.348316
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/TZVP
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 3110 3075 3.66 123.24 0.12 0.22
2 A1 1341 1326 14.10 0.79 0.73 0.84
3 A1 689 682 17.84 10.04 0.29 0.44
4 B1 197 195 95.03 0.27 0.75 0.86
5 B2 3267 3230 0.33 61.03 0.75 0.86
6 B2 907 896 2.75 2.62 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4755.5 cm-1
Scaled (by 0.9888) Zero Point Vibrational Energy (zpe) 4702.3 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 PBEPBE/TZVP
ABC
9.04318 0.37519 0.36024

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.492
Br2 0.000 0.000 0.370
H3 0.000 0.962 -1.994
H4 0.000 -0.962 -1.994

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.86121.08511.0851
Br21.86122.55202.5520
H31.08512.55201.9234
H41.08512.55201.9234

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 117.597 Br2 C1 H4 117.597
H3 C1 H4 124.805
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.330      
2 Br -0.010      
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
  0.000 0.000 -0.844 0.844
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.603 0.000 0.000
y 0.000 -24.438 0.000
z 0.000 0.000 -22.085
Traceless
 xyz
x -3.342 0.000 0.000
y 0.000 -0.094 0.000
z 0.000 0.000 3.435
Polar
3z2-r26.871
x2-y2-2.165
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.828 0.000 0.000
y 0.000 3.216 0.000
z 0.000 0.000 6.249


<r2> (average value of r2) Å2
<r2> 43.160
(<r2>)1/2 6.570