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: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-2697.998453
Energy at 298.15K-2698.003856
HF Energy-2697.751049
Nuclear repulsion energy159.530853
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 MP2/3-21G
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' 3169 3025 20.95      
2 A' 1589 1517 1.89      
3 A' 1401 1337 71.14      
4 A' 1094 1044 115.41      
5 A' 617 589 53.05      
6 A' 287 274 1.07      
7 A" 3248 3100 16.08      
8 A" 1275 1217 1.64      
9 A" 955 911 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 6816.9 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 6506.7 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 MP2/3-21G
ABC
1.27331 0.11590 0.10847

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.533 -1.163 0.000
F2 -0.604 -1.984 0.000
Br3 0.000 0.785 0.000
H4 1.119 -1.316 0.902
H5 1.119 -1.316 -0.902

Atom - Atom Distances (Å)
  C1 F2 Br3 H4 H5
C11.40282.01991.08601.0860
F21.40282.83402.05632.0563
Br32.01992.83402.54522.5452
H41.08602.05632.54521.8039
H51.08602.05632.54521.8039

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 110.492 F2 C1 H4 110.788
F2 C1 H5 110.788 Br3 C1 H4 106.129
Br3 C1 H5 106.129 H4 C1 H5 112.310
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability