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

using model chemistry: MP2=FULL/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 MP2=FULL/cc-pVTZ
 hartrees
Energy at 0K-5184.031537
Energy at 298.15K 
HF Energy-5183.333651
Nuclear repulsion energy342.125894
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-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' 3298 3131 1.07 91.30 0.23 0.37
2 A' 654 621 6.30 4.54 0.27 0.43
3 A' 411 390 25.91 5.77 0.04 0.09
4 A' 194 184 0.11 2.76 0.52 0.69
5 A" 1223 1161 62.00 0.95 0.75 0.86
6 A" 832 790 112.85 0.44 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3305.7 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 3138.4 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-pVTZ
ABC
1.30987 0.04206 0.04078

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.006 0.819 0.000
H2 -0.425 1.798 0.000
Br3 0.006 -0.096 1.593
Br4 0.006 -0.096 -1.593

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.07011.83711.8371
H21.07012.51242.5124
Br31.83712.51243.1865
Br41.83712.51243.1865

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 117.114 H2 C1 Br4 117.114
Br3 C1 Br4 120.280
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability