return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CHBrCl2 (Methane, bromodichloro-)

using model chemistry: PM3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
Energy calculated at PM3
 hartrees
Energy at 0K 
Energy at 298.15K-0.014457
HF Energy-0.014457
Nuclear repulsion energy94.609319
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 PM3
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' 2999 2921 25.58 92.29 0.35 0.52
2 A' 1115 1086 82.16 57.54 0.35 0.52
3 A' 696 678 127.97 181.85 0.37 0.54
4 A' 644 627 8.97 23.13 0.13 0.22
5 A' 312 304 1.27 13.04 0.58 0.73
6 A' 202 197 0.62 8.59 0.72 0.83
7 A" 1159 1129 31.26 8.00 0.75 0.86
8 A" 689 671 88.17 25.82 0.75 0.86
9 A" 182 177 1.11 13.13 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3998.6 cm-1
Scaled (by 0.974) Zero Point Vibrational Energy (zpe) 3894.6 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 PM3
ABC
0.11270 0.06957 0.04482

See section I.F.4 to change rotational constant units
Geometric Data calculated at PM3

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.795 0.044 0.000
H2 -1.580 0.826 0.000
Br3 0.953 0.856 0.000
Cl4 -0.795 -0.914 1.423
Cl5 -0.795 -0.914 -1.423

Atom - Atom Distances (Å)
  C1 H2 Br3 Cl4 Cl5
C11.10881.92741.71561.7156
H21.10882.53392.38142.3814
Br31.92742.53392.86602.8660
Cl41.71562.38142.86602.8468
Cl51.71562.38142.86602.8468

picture of Methane, bromodichloro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 Br3 110.203 H2 C1 Cl4 113.193
H2 C1 Cl5 113.193 Br3 C1 Cl4 103.608
Br3 C1 Cl5 103.608 Cl4 C1 Cl5 112.134
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability