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

using model chemistry: MP3=FULL/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at MP3=FULL/6-31+G**
 hartrees
Energy at 0K-5178.625693
Energy at 298.15K 
HF Energy-5178.203048
Nuclear repulsion energy337.677731
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 MP3=FULL/6-31+G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
A' 3335 3107 1.27      
A' 640 596 11.47      
A' 485 452 17.08      
A' 188 175 0.07      
A" 1247 1162 69.27      
A" 785 732 109.88      

Unscaled Zero Point Vibrational Energy (zpe) 3340.1 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 3111.6 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 MP3=FULL/6-31+G**
ABC
1.25469 0.04106 0.03980

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.007 0.842 0.000
H2 -0.509 1.787 0.000
Br3 0.007 -0.098 1.612
Br4 0.007 -0.098 -1.612

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.07581.86641.8664
H21.07582.53312.5331
Br31.86642.53313.2247
Br41.86642.53313.2247

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 116.242 H2 C1 Br4 116.242
Br3 C1 Br4 119.505
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability