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

using model chemistry: HF/TZVP

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 HF/TZVP
 hartrees
Energy at 0K-2611.406075
Energy at 298.15K-2611.410069
HF Energy-2611.406075
Nuclear repulsion energy80.018706
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 HF/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' 3306 3004 9.52      
2 A' 1493 1357 36.29      
3 A' 707 643 23.53      
4 A' 423 384 53.24      
5 A" 3462 3145 0.02      
6 A" 1001 910 1.10      

Unscaled Zero Point Vibrational Energy (zpe) 5196.0 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 4721.1 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 HF/TZVP
ABC
9.21084 0.37059 0.35698

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.008 1.505 0.000
Br2 -0.008 -0.371 0.000
H3 0.166 1.984 0.940
H4 0.166 1.984 -0.940

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.87631.06941.0694
Br21.87632.54182.5418
H31.06942.54181.8805
H41.06942.54181.8805

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 116.598 Br2 C1 H4 116.598
H3 C1 H4 123.098
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.158      
2 Br -0.108      
3 H 0.133      
4 H 0.133      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.298 1.523 0.000 1.552
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.531 0.653 0.000
y 0.653 -21.539 0.000
z 0.000 0.000 -24.635
Traceless
 xyz
x -3.444 0.653 0.000
y 0.653 4.044 0.000
z 0.000 0.000 -0.601
Polar
3z2-r2-1.201
x2-y2-4.992
xy0.653
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.596 0.059 0.000
y 0.059 5.487 0.000
z 0.000 0.000 3.027


<r2> (average value of r2) Å2
<r2> 43.249
(<r2>)1/2 6.576

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at HF/TZVP
 hartrees
Energy at 0K-2611.405919
Energy at 298.15K 
HF Energy-2611.405919
Nuclear repulsion energy80.119420
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 HF/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 3314 3011 7.26 119.84 0.12 0.22
2 A1 1490 1354 38.41 0.32 0.48 0.65
3 A1 710 645 21.05 13.23 0.32 0.48
4 B1 311i 282i 71.52 0.08 0.75 0.86
5 B2 3478 3160 0.36 58.42 0.75 0.86
6 B2 990 899 1.40 2.19 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4835.9 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 4393.9 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 HF/TZVP
ABC
9.33934 0.37161 0.35739

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.501
Br2 0.000 0.000 0.371
H3 0.000 0.946 -1.996
H4 0.000 -0.946 -1.996

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.87191.06821.0682
Br21.87192.54962.5496
H31.06822.54961.8926
H41.06822.54961.8926

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 117.643 Br2 C1 H4 117.643
H3 C1 H4 124.714
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.179      
2 Br -0.100      
3 H 0.139      
4 H 0.139      


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 -1.517 1.517
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.615 0.000 0.000
y 0.000 -24.571 0.000
z 0.000 0.000 -21.439
Traceless
 xyz
x -3.611 0.000 0.000
y 0.000 -0.544 0.000
z 0.000 0.000 4.154
Polar
3z2-r28.309
x2-y2-2.045
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.574 0.000 0.000
y 0.000 3.010 0.000
z 0.000 0.000 5.476


<r2> (average value of r2) Å2
<r2> 43.216
(<r2>)1/2 6.574