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All results from a given calculation for FOOF (Perfluoroperoxide)

using model chemistry: PBEPBE/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at PBEPBE/3-21G*
 hartrees
Energy at 0K-347.619510
Energy at 298.15K-347.620838
HF Energy-347.619510
Nuclear repulsion energy118.629634
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 PBEPBE/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 945 901 0.00      
2 A 754 719 29.68      
3 A 386 368 0.16      
4 A 179 170 0.59      
5 B 842 802 92.35      
6 B 455 434 6.29      

Unscaled Zero Point Vibrational Energy (zpe) 1779.8 cm-1
Scaled (by 0.9535) Zero Point Vibrational Energy (zpe) 1697.1 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 PBEPBE/3-21G*
ABC
0.67086 0.15273 0.13645

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
F1 0.632 1.445 -0.494
O2 0.632 0.310 0.556
O3 -0.632 -0.310 0.556
F4 -0.632 -1.445 -0.494

Atom - Atom Distances (Å)
  F1 O2 O3 F4
F11.54612.40433.1546
O21.54611.40752.4043
O32.40431.40751.5461
F43.15462.40431.5461

picture of Perfluoroperoxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F1 O2 O3 108.892 O2 O3 F4 108.892
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 F -0.082      
2 O 0.082      
3 O 0.082      
4 F -0.082      


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 0.566 0.566
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.202 -0.431 0.000
y -0.431 -19.870 0.000
z 0.000 0.000 -18.731
Traceless
 xyz
x 0.098 -0.431 0.000
y -0.431 -0.903 0.000
z 0.000 0.000 0.805
Polar
3z2-r21.611
x2-y20.668
xy-0.431
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.690 1.414 0.000
y 1.414 3.340 0.000
z 0.000 0.000 1.524


<r2> (average value of r2) Å2
<r2> 74.079
(<r2>)1/2 8.607