return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for CH2FI (fluoroiodomethane)

using model chemistry: B2PLYP=FULL/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP=FULL/6-311G**
 hartrees
Energy at 0K-7058.064056
Energy at 298.15K 
HF Energy-7057.732008
Nuclear repulsion energy215.346640
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 B2PLYP=FULL/6-311G**
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' 3127 3127 14.07 110.05 0.09 0.16
2 A' 1508 1508 0.67 10.09 0.71 0.83
3 A' 1318 1318 82.27 3.34 0.27 0.42
4 A' 1088 1088 219.63 3.69 0.69 0.82
5 A' 561 561 50.29 25.97 0.29 0.45
6 A' 266 266 0.25 6.51 0.41 0.58
7 A" 3215 3215 4.69 62.20 0.75 0.86
8 A" 1262 1262 2.90 5.81 0.75 0.86
9 A" 877 877 0.68 2.55 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6610.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6610.6 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 B2PLYP=FULL/6-311G**
ABC
1.29276 0.09325 0.08848

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.524 -1.497 0.000
F2 -0.593 -2.274 0.000
I3 0.000 0.619 0.000
H4 1.098 -1.672 0.905
H5 1.098 -1.672 -0.905

Atom - Atom Distances (Å)
  C1 F2 I3 H4 H5
C11.36142.17951.08571.0857
F21.36142.95342.01032.0103
I32.17952.95342.69692.6969
H41.08572.01032.69691.8097
H51.08572.01032.69691.8097

picture of fluoroiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 C1 I3 110.918 F2 C1 H4 109.959
F2 C1 H5 109.959 I3 C1 H4 106.504
I3 C1 H5 106.504 H4 C1 H5 112.907
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability