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

using model chemistry: HF/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-2611.373078
Energy at 298.15K-2611.377075
HF Energy-2611.373078
Nuclear repulsion energy80.008753
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/aug-cc-pVDZ
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' 3303 3008 9.29      
2 A' 1473 1342 30.73      
3 A' 714 650 21.97      
4 A' 424 386 45.81      
5 A" 3464 3154 0.26      
6 A" 991 902 0.36      

Unscaled Zero Point Vibrational Energy (zpe) 5183.9 cm-1
Scaled (by 0.9106) Zero Point Vibrational Energy (zpe) 4720.5 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/aug-cc-pVDZ
ABC
9.05960 0.37108 0.35725

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.008 1.504 0.000
Br2 -0.008 -0.371 0.000
H3 0.171 1.983 0.948
H4 0.171 1.983 -0.948

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.87481.07711.0771
Br21.87482.54442.5444
H31.07712.54441.8951
H41.07712.54441.8951

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 116.453 Br2 C1 H4 116.453
H3 C1 H4 123.214
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.096      
2 Br 0.272      
3 H -0.088      
4 H -0.088      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.281 1.511 0.000 1.537
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.741 0.642 0.000
y 0.642 -21.635 0.000
z 0.000 0.000 -24.747
Traceless
 xyz
x -3.549 0.642 0.000
y 0.642 4.109 0.000
z 0.000 0.000 -0.560
Polar
3z2-r2-1.119
x2-y2-5.105
xy0.642
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.980 0.026 0.000
y 0.026 6.151 0.000
z 0.000 0.000 4.191


<r2> (average value of r2) Å2
<r2> 43.335
(<r2>)1/2 6.583

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at HF/aug-cc-pVDZ
 hartrees
Energy at 0K-2611.372912
Energy at 298.15K 
HF Energy-2611.372912
Nuclear repulsion energy80.108783
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/aug-cc-pVDZ
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 3018 7.31 121.07 0.08 0.14
2 A1 1473 1341 34.05 0.93 0.04 0.08
3 A1 717 653 19.43 15.35 0.16 0.28
4 B1 313i 285i 57.54 0.09 0.75 0.86
5 B2 3482 3170 0.97 51.50 0.75 0.86
6 B2 980 893 0.45 0.83 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4826.2 cm-1
Scaled (by 0.9106) Zero Point Vibrational Energy (zpe) 4394.7 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/aug-cc-pVDZ
ABC
9.19526 0.37208 0.35761

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.499
Br2 0.000 0.000 0.371
H3 0.000 0.954 -1.997
H4 0.000 -0.954 -1.997

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.87031.07571.0757
Br21.87032.55282.5528
H31.07572.55281.9074
H41.07572.55281.9074

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 117.557 Br2 C1 H4 117.557
H3 C1 H4 124.885
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.092      
2 Br 0.286      
3 H -0.097      
4 H -0.097      


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