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

using model chemistry: mPW1PW91/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 mPW1PW91/daug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at mPW1PW91/daug-cc-pVTZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/daug-cc-pVTZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at mPW1PW91/daug-cc-pVTZ
 hartrees
Energy at 0K-2613.640751
Energy at 298.15K 
HF Energy-2613.640751
Nuclear repulsion energy81.103991
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 mPW1PW91/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 3193 3193 4.03 124.86 0.08 0.14
2 A1 1385 1385 15.73 1.16 0.30 0.46
3 A1 723 723 16.44 9.66 0.09 0.16
4 B1 188 188 63.48 0.91 0.75 0.86
5 B2 3347 3347 1.26 52.66 0.75 0.86
6 B2 930 930 0.88 0.71 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4882.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4882.6 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 mPW1PW91/daug-cc-pVTZ
ABC
9.24411 0.38220 0.36703

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/daug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.477
Br2 0.000 0.000 0.366
H3 0.000 0.951 -1.979
H4 0.000 -0.951 -1.979

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.84331.07561.0756
Br21.84332.53102.5310
H31.07562.53101.9023
H41.07562.53101.9023

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 117.832 Br2 C1 H4 117.832
H3 C1 H4 124.336
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -1.044      
2 Br -0.132      
3 H 0.588      
4 H 0.588      


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 -1.011 1.011
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.364 0.000 0.000
y 0.000 -24.349 0.000
z 0.000 0.000 -21.955
Traceless
 xyz
x -3.212 0.000 0.000
y 0.000 -0.189 0.000
z 0.000 0.000 3.402
Polar
3z2-r26.803
x2-y2-2.015
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.466 0.000 0.000
y 0.000 4.629 0.000
z 0.000 0.000 6.754


<r2> (average value of r2) Å2
<r2> 42.558
(<r2>)1/2 6.524