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

using model chemistry: B3LYPultrafine/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at B3LYPultrafine/cc-pVTZ
 hartrees
Energy at 0K-5187.116619
Energy at 298.15K 
HF Energy-5187.116619
Nuclear repulsion energy336.160533
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 B3LYPultrafine/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' 3215 3108 0.69 96.67 0.26 0.41
2 A' 615 594 6.92 5.69 0.21 0.35
3 A' 403 390 24.58 12.17 0.08 0.15
4 A' 184 178 0.10 3.69 0.49 0.66
5 A" 1178 1139 59.06 0.77 0.75 0.86
6 A" 757 732 131.57 1.50 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3175.8 cm-1
Scaled (by 0.9667) Zero Point Vibrational Energy (zpe) 3070.1 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 B3LYPultrafine/cc-pVTZ
ABC
1.28848 0.04050 0.03930

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.006 0.827 0.000
H2 -0.464 1.797 0.000
Br3 0.006 -0.097 1.624
Br4 0.006 -0.097 -1.624

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.07791.86791.8679
H21.07792.53832.5383
Br31.86792.53833.2472
Br41.86792.53833.2472

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 116.426 H2 C1 Br4 116.426
Br3 C1 Br4 120.733
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.221      
2 H 0.158      
3 Br 0.032      
4 Br 0.032      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.416 0.642 0.000 0.765
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.505 -0.870 0.000
y -0.870 -40.874 0.000
z 0.000 0.000 -41.528
Traceless
 xyz
x -2.303 -0.870 0.000
y -0.870 1.642 0.000
z 0.000 0.000 0.661
Polar
3z2-r21.322
x2-y2-2.630
xy-0.870
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.612 -0.120 0.000
y -0.120 5.899 0.000
z 0.000 0.000 10.871


<r2> (average value of r2) Å2
<r2> 218.937
(<r2>)1/2 14.797