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 CH2BrF (Methane, bromofluoro-)

using model chemistry: MP2/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/STO-3G
 hartrees
Energy at 0K-2681.342383
Energy at 298.15K-2681.347830
HF Energy-2681.260418
Nuclear repulsion energy162.374241
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/STO-3G
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' 3326 2900 7.21      
2 A' 1690 1473 1.14      
3 A' 1482 1292 67.87      
4 A' 1248 1088 29.58      
5 A' 760 663 24.61      
6 A' 340 297 1.80      
7 A" 3438 2998 7.02      
8 A" 1344 1172 2.97      
9 A" 1015 885 3.23      

Unscaled Zero Point Vibrational Energy (zpe) 7321.2 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 6383.3 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/STO-3G
ABC
1.30920 0.12025 0.11257

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.513 -1.114 0.000
F2 -0.596 -1.958 0.000
Br3 0.000 0.769 0.000
H4 1.141 -1.300 0.907
H5 1.141 -1.300 -0.907

Atom - Atom Distances (Å)
  C1 F2 Br3 H4 H5
C11.39361.95181.11871.1187
F21.39362.79122.06692.0669
Br31.95182.79122.53102.5310
H41.11872.06692.53101.8144
H51.11872.06692.53101.8144

picture of Methane, bromofluoro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 C1 Br3 112.014 F2 C1 H4 110.232
F2 C1 H5 110.232 Br3 C1 H4 107.937
Br3 C1 H5 107.937 H4 C1 H5 108.373
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability