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All results from a given calculation for CHBr2 (dibromomethyl radical)

using model chemistry: PBEPBEultrafine/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at PBEPBEultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-5186.086631
Energy at 298.15K 
HF Energy-5186.086631
Nuclear repulsion energy335.567008
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/aug-cc-pVDZ
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' 3138 3119 0.75 104.47 0.22 0.36
2 A' 617 614 7.02 5.90 0.10 0.18
3 A' 426 423 21.57 14.96 0.12 0.22
4 A' 181 180 0.08 3.43 0.41 0.58
5 A" 1124 1117 47.84 0.14 0.75 0.86
6 A" 744 739 140.52 1.46 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3114.8 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 3095.8 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 PBEPBEultrafine/aug-cc-pVDZ
ABC
1.24801 0.04052 0.03928

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.007 0.842 0.000
H2 -0.533 1.798 0.000
Br3 0.007 -0.098 1.623
Br4 0.007 -0.098 -1.623

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.09771.87591.8759
H21.09772.55362.5536
Br31.87592.55363.2463
Br41.87592.55363.2463

picture of dibromomethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 Br3 115.870 H2 C1 Br4 115.870
Br3 C1 Br4 119.827
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.414      
2 H -0.249      
3 Br 0.331      
4 Br 0.331      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.449 0.566 0.000 0.722
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.755 -1.035 0.000
y -1.035 -41.130 0.000
z 0.000 0.000 -41.461
Traceless
 xyz
x -2.460 -1.035 0.000
y -1.035 1.478 0.000
z 0.000 0.000 0.982
Polar
3z2-r21.963
x2-y2-2.625
xy-1.035
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.327 -0.059 0.000
y -0.059 7.298 0.000
z 0.000 0.000 12.337


<r2> (average value of r2) Å2
<r2> 219.175
(<r2>)1/2 14.805