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/TZVP

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/TZVP
 hartrees
Energy at 0K-2711.516789
Energy at 298.15K-2711.522257
HF Energy-2710.923529
Nuclear repulsion energy164.604086
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/TZVP
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' 3148 3007 19.17      
2 A' 1533 1464 0.67      
3 A' 1390 1328 77.63      
4 A' 1112 1062 191.13      
5 A' 657 627 62.25      
6 A' 318 304 0.62      
7 A" 3232 3088 7.04      
8 A" 1281 1224 3.75      
9 A" 964 920 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 6817.1 cm-1
Scaled (by 0.9553) Zero Point Vibrational Energy (zpe) 6512.3 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 QCISD/TZVP
ABC
1.34243 0.12386 0.11597

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.516 -1.119 0.000
F2 -0.586 -1.918 0.000
Br3 0.000 0.759 0.000
H4 1.089 -1.296 0.904
H5 1.089 -1.296 -0.904

Atom - Atom Distances (Å)
  C1 F2 Br3 H4 H5
C11.36141.94761.08531.0853
F21.36142.74102.00292.0029
Br31.94762.74102.49562.4956
H41.08532.00292.49561.8085
H51.08532.00292.49561.8085

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 110.611 F2 C1 H4 109.376
F2 C1 H5 109.376 Br3 C1 H4 107.296
Br3 C1 H5 107.296 H4 C1 H5 112.855
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability