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 CH2FI (fluoroiodomethane)

using model chemistry: HSEh1PBE/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 HSEh1PBE/3-21G*
 hartrees
Energy at 0K-7028.336982
Energy at 298.15K 
HF Energy-7028.336982
Nuclear repulsion energy213.858132
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 HSEh1PBE/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' 3119 2994 12.33 97.62 0.10 0.19
2 A' 1546 1484 0.27 13.94 0.73 0.84
3 A' 1334 1280 63.82 2.74 0.58 0.73
4 A' 1098 1054 130.88 2.65 0.74 0.85
5 A' 572 549 46.20 24.52 0.26 0.41
6 A' 255 245 0.35 5.21 0.44 0.61
7 A" 3198 3070 5.94 63.74 0.75 0.86
8 A" 1245 1195 0.76 8.68 0.75 0.86
9 A" 892 856 1.30 4.11 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6628.9 cm-1
Scaled (by 0.9599) Zero Point Vibrational Energy (zpe) 6363.0 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 HSEh1PBE/3-21G*
ABC
1.24892 0.09216 0.08729

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.535 -1.498 0.000
F2 -0.606 -2.294 0.000
I3 0.000 0.622 0.000
H4 1.124 -1.658 0.903
H5 1.124 -1.658 -0.903

Atom - Atom Distances (Å)
  C1 F2 I3 H4 H5
C11.39082.18591.08991.0899
F21.39082.97762.05232.0523
I32.18592.97762.69732.6973
H41.08992.05232.69731.8052
H51.08992.05232.69731.8052

picture of fluoroiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 C1 I3 110.745 F2 C1 H4 111.068
F2 C1 H5 111.068 I3 C1 H4 105.953
I3 C1 H5 105.953 H4 C1 H5 111.819
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.245      
2 F -0.273      
3 I 0.010      
4 H 0.254      
5 H 0.254      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.705 -0.521 0.000 1.783
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.338 -4.268 0.000
y -4.268 -38.752 0.000
z 0.000 0.000 -39.512
Traceless
 xyz
x -0.206 -4.268 0.000
y -4.268 0.673 0.000
z 0.000 0.000 -0.467
Polar
3z2-r2-0.934
x2-y2-0.586
xy-4.268
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.535 -0.500 0.000
y -0.500 7.300 0.000
z 0.000 0.000 4.293


<r2> (average value of r2) Å2
<r2> 120.449
(<r2>)1/2 10.975