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

using model chemistry: PBEPBE/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes C2V 2A1

Conformer 1 (CS)

Jump to S1C2
Vibrational Frequencies calculated at PBEPBE/daug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at PBEPBE/daug-cc-pVTZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/daug-cc-pVTZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at PBEPBE/daug-cc-pVTZ
 hartrees
Energy at 0K-2613.016269
Energy at 298.15K 
HF Energy-2613.016269
Nuclear repulsion energy80.609660
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/daug-cc-pVTZ
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 3106 3106 3.68 134.06 0.08 0.14
2 A1 1332 1332 13.78 1.16 0.42 0.59
3 A1 700 700 14.40 11.35 0.09 0.17
4 B1 184 184 64.76 1.65 0.75 0.86
5 B2 3255 3255 0.81 57.67 0.75 0.86
6 B2 899 899 1.05 0.75 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4737.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4737.5 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 PBEPBE/daug-cc-pVTZ
ABC
9.07337 0.37777 0.36267

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/daug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.486
Br2 0.000 0.000 0.368
H3 0.000 0.960 -1.989
H4 0.000 -0.960 -1.989

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.85441.08401.0840
Br21.85442.54572.5457
H31.08402.54571.9202
H41.08402.54571.9202

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 117.666 Br2 C1 H4 117.666
H3 C1 H4 124.669
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.927      
2 Br -0.057      
3 H 0.492      
4 H 0.492      


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 -0.842 0.842
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.605 0.000 0.000
y 0.000 -24.562 0.000
z 0.000 0.000 -22.368
Traceless
 xyz
x -3.140 0.000 0.000
y 0.000 -0.075 0.000
z 0.000 0.000 3.215
Polar
3z2-r26.431
x2-y2-2.043
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.740 0.000 0.000
y 0.000 4.869 0.000
z 0.000 0.000 7.208


<r2> (average value of r2) Å2
<r2> 43.068
(<r2>)1/2 6.563