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

using model chemistry: ROMP2/cc-pVTZ

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 ROMP2/cc-pVTZ
 hartrees
Energy at 0K-2611.831866
Energy at 298.15K-2611.835696
HF Energy-2611.452413
Nuclear repulsion energy81.394731
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 ROMP2/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 A' 3231 3231        
2 A' 1425 1425        
3 A' 739 739        
4 A' 271 271        
5 A" 3387 3387        
6 A" 951 951        

Unscaled Zero Point Vibrational Energy (zpe) 5001.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5001.8 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 ROMP2/cc-pVTZ
ABC
9.32319 0.38495 0.36968

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.471 0.000
Br2 0.000 -0.365 0.000
H3 -0.001 1.976 0.947
H4 -0.001 1.976 -0.947

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.83591.07331.0733
Br21.83592.52522.5252
H31.07332.52521.8943
H41.07332.52521.8943

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 118.063 Br2 C1 H4 118.063
H3 C1 H4 123.874
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at ROMP2/cc-pVTZ
 hartrees
Energy at 0K-2611.831866
Energy at 298.15K 
HF Energy-2611.452417
Nuclear repulsion energy81.391640
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 ROMP2/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 3231 3231        
2 A1 1425 1425        
3 A1 739 739        
4 B1 268 268        
5 B2 3387 3387        
6 B2 951 951        

Unscaled Zero Point Vibrational Energy (zpe) 5000.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5000.8 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 ROMP2/cc-pVTZ
ABC
9.31956 0.38493 0.36966

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.471
Br2 0.000 0.000 0.365
H3 0.000 0.947 -1.975
H4 0.000 -0.947 -1.975

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.83601.07321.0732
Br21.83602.52492.5249
H31.07322.52491.8946
H41.07322.52491.8946

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 118.034 Br2 C1 H4 118.034
H3 C1 H4 123.932
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROMP2/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.235      
2 Br -0.067      
3 H 0.151      
4 H 0.151      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 42.393
(<r2>)1/2 6.511