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: PBEPBEultrafine/cc-pVTZ-PP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBEultrafine/cc-pVTZ-PP
 hartrees
Energy at 0K-434.744677
Energy at 298.15K 
HF Energy-434.744677
Nuclear repulsion energy118.139777
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 PBEPBEultrafine/cc-pVTZ-PP
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' 3015 3015 10.52 121.51 0.08 0.15
2 A' 1434 1434 0.32 7.95 0.74 0.85
3 A' 1236 1236 43.60 2.55 0.12 0.22
4 A' 1051 1051 212.87 1.94 0.59 0.75
5 A' 543 543 44.94 21.74 0.20 0.33
6 A' 255 255 0.11 5.69 0.34 0.51
7 A" 3101 3101 3.11 59.85 0.75 0.86
8 A" 1197 1197 1.69 3.34 0.75 0.86
9 A" 832 832 0.74 1.26 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6331.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6331.8 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 PBEPBEultrafine/cc-pVTZ-PP
ABC
1.28704 0.09286 0.08813

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/cc-pVTZ-PP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.524 -1.497 0.000
F2 -0.594 -2.282 0.000
I3 0.000 0.620 0.000
H4 1.102 -1.662 0.915
H5 1.102 -1.662 -0.915

Atom - Atom Distances (Å)
  C1 F2 I3 H4 H5
C11.36632.18031.09471.0947
F21.36632.96162.02442.0244
I32.18032.96162.69412.6941
H41.09472.02442.69411.8295
H51.09472.02442.69411.8295

picture of fluoroiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 C1 I3 111.158 F2 C1 H4 110.202
F2 C1 H5 110.202 I3 C1 H4 105.884
I3 C1 H5 105.884 H4 C1 H5 113.367
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/cc-pVTZ-PP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.046      
2 F -0.157      
3 I -0.061      
4 H 0.086      
5 H 0.086      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.426 -0.641 0.000 1.563
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.289 -3.618 0.000
y -3.618 -37.472 0.000
z 0.000 0.000 -38.353
Traceless
 xyz
x -0.377 -3.618 0.000
y -3.618 0.849 0.000
z 0.000 0.000 -0.472
Polar
3z2-r2-0.945
x2-y2-0.817
xy-3.618
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.658 -0.497 0.000
y -0.497 8.704 0.000
z 0.000 0.000 5.421


<r2> (average value of r2) Å2
<r2> 108.110
(<r2>)1/2 10.398