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

using model chemistry: PBEPBE/6-311+G(3df,2p)

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/6-311+G(3df,2p)
Rotational Constants (cm-1) from geometry optimized at PBEPBE/6-311+G(3df,2p)
See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-311+G(3df,2p)
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at PBEPBE/6-311+G(3df,2p)
 hartrees
Energy at 0K-2612.937084
Energy at 298.15K 
HF Energy-2612.937084
Nuclear repulsion energy80.651044
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/6-311+G(3df,2p)
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 3103 3078 3.46 117.17 0.08 0.15
2 A1 1332 1321 12.90 1.14 0.34 0.51
3 A1 702 696 14.49 12.18 0.10 0.18
4 B1 179 177 66.58 1.95 0.75 0.86
5 B2 3256 3230 0.92 55.87 0.75 0.86
6 B2 901 894 1.15 0.83 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4736.6 cm-1
Scaled (by 0.9918) Zero Point Vibrational Energy (zpe) 4697.8 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 PBEPBE/6-311+G(3df,2p)
ABC
9.07660 0.37818 0.36306

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.485
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
C11.85331.08401.0840
Br21.85332.54492.5449
H31.08402.54491.9198
H41.08402.54491.9198

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 117.683 Br2 C1 H4 117.683
H3 C1 H4 124.633
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.289      
2 Br -0.022      
3 H 0.155      
4 H 0.155      


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 -0.848 0.848
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.652 0.000 0.000
y 0.000 -24.557 0.000
z 0.000 0.000 -22.294
Traceless
 xyz
x -3.227 0.000 0.000
y 0.000 -0.084 0.000
z 0.000 0.000 3.310
Polar
3z2-r26.621
x2-y2-2.096
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.453 0.000 0.000
y 0.000 4.551 0.000
z 0.000 0.000 6.923


<r2> (average value of r2) Å2
<r2> 43.034
(<r2>)1/2 6.560