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: QCISD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/6-31G*
 hartrees
Energy at 0K-2708.777730
Energy at 298.15K-2708.783173
HF Energy-2708.340838
Nuclear repulsion energy163.917080
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 QCISD/6-31G*
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' 3146 2996 18.68      
2 A' 1551 1477 0.51      
3 A' 1378 1313 72.53      
4 A' 1132 1078 159.64      
5 A' 647 617 61.86      
6 A' 311 296 0.54      
7 A" 3230 3076 10.08      
8 A" 1275 1214 2.78      
9 A" 964 918 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 6817.4 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 6492.2 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 QCISD/6-31G*
ABC
1.31857 0.12314 0.11518

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.521 -1.126 0.000
F2 -0.591 -1.922 0.000
Br3 0.000 0.762 0.000
H4 1.099 -1.298 0.908
H5 1.099 -1.298 -0.908

Atom - Atom Distances (Å)
  C1 F2 Br3 H4 H5
C11.36771.95851.09001.0900
F21.36772.74812.01802.0180
Br31.95852.74812.50452.5045
H41.09002.01802.50451.8161
H51.09002.01802.50451.8161

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 110.155 F2 C1 H4 109.874
F2 C1 H5 109.874 Br3 C1 H4 107.008
Br3 C1 H5 107.008 H4 C1 H5 112.832
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability