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 IF3 (iodone trifluoride)

using model chemistry: mPW1PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/3-21G
 hartrees
Energy at 0K-7188.650626
Energy at 298.15K 
HF Energy-7188.650626
Nuclear repulsion energy429.570492
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 mPW1PW91/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 618 590 8.40 11.12 0.24 0.38
2 A1 534 510 0.00 19.33 0.39 0.56
3 A1 200 191 22.96 0.24 0.31 0.48
4 B1 179 171 18.70 0.01 0.75 0.86
5 B2 591 564 85.03 1.36 0.75 0.86
6 B2 272 260 6.70 3.03 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1196.6 cm-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 1142.3 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 mPW1PW91/3-21G
ABC
0.26971 0.11629 0.08125

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
I1 0.000 0.000 0.295
F2 0.000 0.000 -1.646
F3 0.000 1.953 -0.045
F4 0.000 -1.953 -0.045

Atom - Atom Distances (Å)
  I1 F2 F3 F4
I11.94131.98261.9826
F21.94132.52572.5257
F31.98262.52573.9065
F41.98262.52573.9065

picture of iodone trifluoride state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 I1 F3 80.124 F2 I1 F4 80.124
F3 I1 F4 160.248
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 I 1.300      
2 F -0.385      
3 F -0.458      
4 F -0.458      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 3.043 3.043
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.430 0.000 0.000
y 0.000 -51.198 0.000
z 0.000 0.000 -40.885
Traceless
 xyz
x 6.612 0.000 0.000
y 0.000 -11.041 0.000
z 0.000 0.000 4.429
Polar
3z2-r28.857
x2-y211.769
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.301 0.000 0.000
y 0.000 5.621 0.000
z 0.000 0.000 3.251


<r2> (average value of r2) Å2
<r2> 125.094
(<r2>)1/2 11.185