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 FOOF (Perfluoroperoxide)

using model chemistry: B3LYP/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B3LYP/6-31G**
 hartrees
Energy at 0K-349.803787
Energy at 298.15K-349.805343
HF Energy-349.803787
Nuclear repulsion energy126.204617
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 B3LYP/6-31G**
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 1123 1079 11.00      
2 A 732 704 58.77      
3 A 481 463 7.10      
4 A 212 204 0.32      
5 B 789 758 123.09      
6 B 576 553 33.15      

Unscaled Zero Point Vibrational Energy (zpe) 1956.2 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 1879.5 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 B3LYP/6-31G**
ABC
0.71220 0.17709 0.15525

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
F1 0.570 1.357 -0.486
O2 0.570 0.275 0.547
O3 -0.570 -0.275 0.547
F4 -0.570 -1.357 -0.486

Atom - Atom Distances (Å)
  F1 O2 O3 F4
F11.49602.24352.9447
O21.49601.26622.2435
O32.24351.26621.4960
F42.94472.24351.4960

picture of Perfluoroperoxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F1 O2 O3 108.334 O2 O3 F4 108.334
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 F -0.156      
2 O 0.156      
3 O 0.156      
4 F -0.156      


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 0.856 0.856
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.501 -0.576 0.000
y -0.576 -20.548 0.000
z 0.000 0.000 -18.971
Traceless
 xyz
x 0.259 -0.576 0.000
y -0.576 -1.313 0.000
z 0.000 0.000 1.054
Polar
3z2-r22.107
x2-y21.048
xy-0.576
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.947 1.074 0.000
y 1.074 3.464 0.000
z 0.000 0.000 2.075


<r2> (average value of r2) Å2
<r2> 66.759
(<r2>)1/2 8.171