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All results from a given calculation for FOOF (Perfluoroperoxide)

using model chemistry: QCISD/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 QCISD/3-21G*
 hartrees
Energy at 0K-346.906968
Energy at 298.15K-346.908220
HF Energy-346.358669
Nuclear repulsion energy119.110432
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 QCISD/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 881 847 3.93      
2 A 797 766 0.53      
3 A 360 346 0.09      
4 A 141 135 0.30      
5 B 890 855 7.89      
6 B 451 434 3.25      

Unscaled Zero Point Vibrational Energy (zpe) 1759.7 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 1691.3 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 QCISD/3-21G*
ABC
0.61788 0.16249 0.14459

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
F1 0.704 1.328 -0.506
O2 0.704 0.253 0.569
O3 -0.704 -0.253 0.569
F4 -0.704 -1.328 -0.506

Atom - Atom Distances (Å)
  F1 O2 O3 F4
F11.52042.37413.0061
O21.52041.49632.3741
O32.37411.49631.5204
F43.00612.37411.5204

picture of Perfluoroperoxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F1 O2 O3 103.812 O2 O3 F4 103.812
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability