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All results from a given calculation for FOOF (Perfluoroperoxide)

using model chemistry: HF/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at HF/CEP-31G
 hartrees
Energy at 0K-78.664860
Energy at 298.15K-78.666563
HF Energy-78.664860
Nuclear repulsion energy74.396288
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 HF/CEP-31G
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 1104 995 23.40      
2 A 1060 956 6.29      
3 A 485 437 0.89      
4 A 189 171 0.96      
5 B 1078 971 62.54      
6 B 625 563 12.42      

Unscaled Zero Point Vibrational Energy (zpe) 2270.4 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 2046.5 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 HF/CEP-31G
ABC
0.73891 0.18338 0.16301

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
F1 0.632 1.274 -0.468
O2 0.632 0.270 0.526
O3 -0.632 -0.270 0.526
F4 -0.632 -1.274 -0.468

Atom - Atom Distances (Å)
  F1 O2 O3 F4
F11.41242.22892.8439
O21.41241.37402.2289
O32.22891.37401.4124
F42.84392.22891.4124

picture of Perfluoroperoxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F1 O2 O3 106.234 O2 O3 F4 106.234
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 F -0.126      
2 O 0.126      
3 O 0.126      
4 F -0.126      


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 0.538 0.538
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.764 -0.709 0.000
y -0.709 -21.571 0.000
z 0.000 0.000 -20.507
Traceless
 xyz
x 0.275 -0.709 0.000
y -0.709 -0.936 0.000
z 0.000 0.000 0.661
Polar
3z2-r21.321
x2-y20.807
xy-0.709
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.775 1.092 0.000
y 1.092 3.151 0.000
z 0.000 0.000 1.980


<r2> (average value of r2) Å2
<r2> 53.438
(<r2>)1/2 7.310