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

using model chemistry: MP2=FULL/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 MP2=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-5183.598282
Energy at 298.15K 
HF Energy-5183.174583
Nuclear repulsion energy338.033089
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/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' 3251 3151 1.06 95.66 0.19 0.32
2 A' 656 635 11.01 3.67 0.19 0.31
3 A' 506 491 14.95 9.52 0.06 0.12
4 A' 190 185 0.04 2.60 0.41 0.58
5 A" 1191 1155 58.02 0.19 0.75 0.86
6 A" 793 768 123.30 0.78 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3293.5 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 3192.0 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/aug-cc-pVDZ
ABC
1.24199 0.04123 0.03995

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.007 0.847 0.000
H2 -0.559 1.780 0.000
Br3 0.007 -0.098 1.609
Br4 0.007 -0.098 -1.609

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.09061.86631.8663
H21.09062.53672.5367
Br31.86632.53673.2182
Br41.86632.53673.2182

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 115.659 H2 C1 Br4 115.659
Br3 C1 Br4 119.130
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability