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

using model chemistry: PBEPBEultrafine/6-31G*

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 PBEPBEultrafine/6-31G*
Rotational Constants (cm-1) from geometry optimized at PBEPBEultrafine/6-31G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-31G*
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at PBEPBEultrafine/6-31G*
 hartrees
Energy at 0K-2610.479342
Energy at 298.15K 
HF Energy-2610.479342
Nuclear repulsion energy80.309872
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 PBEPBEultrafine/6-31G*
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 3138 3086 4.22 108.88 0.12 0.22
2 A1 1361 1338 18.41 3.09 0.63 0.77
3 A1 692 681 17.18 9.44 0.22 0.37
4 B1 136i 134i 84.81 0.30 0.75 0.86
5 B2 3289 3234 0.00 59.94 0.75 0.86
6 B2 906 891 1.89 4.62 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4624.5 cm-1
Scaled (by 0.9835) Zero Point Vibrational Energy (zpe) 4548.2 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 PBEPBEultrafine/6-31G*
ABC
9.02390 0.37491 0.35996

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.491
Br2 0.000 0.000 0.370
H3 0.000 0.963 -1.998
H4 0.000 -0.963 -1.998

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.86121.08801.0880
Br21.86122.55632.5563
H31.08802.55631.9254
H41.08802.55631.9254

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 117.772 Br2 C1 H4 117.772
H3 C1 H4 124.456
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.364      
2 Br -0.035      
3 H 0.199      
4 H 0.199      


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 -0.900 0.900
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.939 0.000 0.000
y 0.000 -23.977 0.000
z 0.000 0.000 -21.416
Traceless
 xyz
x -3.243 0.000 0.000
y 0.000 -0.299 0.000
z 0.000 0.000 3.542
Polar
3z2-r27.084
x2-y2-1.963
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.393 0.000 0.000
y 0.000 3.202 0.000
z 0.000 0.000 5.587


<r2> (average value of r2) Å2
<r2> 42.823
(<r2>)1/2 6.544