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

using model chemistry: MP2=FULL/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 MP2=FULL/cc-pVDZ
 hartrees
Energy at 0K-5183.558538
Energy at 298.15K 
HF Energy-5183.166567
Nuclear repulsion energy337.563072
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 MP2=FULL/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' 3264 3102 1.24 105.12 0.24 0.39
2 A' 654 622 12.65 5.09 0.57 0.72
3 A' 504 479 19.24 7.60 0.02 0.04
4 A' 191 182 0.04 3.97 0.55 0.71
5 A" 1202 1142 60.71 2.85 0.75 0.86
6 A" 805 765 123.42 1.03 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3310.2 cm-1
Scaled (by 0.9504) Zero Point Vibrational Energy (zpe) 3146.0 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 MP2=FULL/cc-pVDZ
ABC
1.25977 0.04102 0.03976

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.007 0.839 0.000
H2 -0.533 1.789 0.000
Br3 0.007 -0.097 1.613
Br4 0.007 -0.097 -1.613

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.09271.86511.8651
H21.09272.53992.5399
Br31.86512.53993.2265
Br41.86512.53993.2265

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 115.872 H2 C1 Br4 115.872
Br3 C1 Br4 119.754
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability