Best Lewis Structure
The Lewis structure that is closest to your structure is determined.
The hybridization of the atoms in this idealized Lewis structure
is given in the table below.
Please note that your structure can't be well described by a single
Lewis structure, because of extensive delocalization.
Hybridization in the Best Lewis Structure
1. A bonding orbital for O1-O2 with 1.9933 electrons
__has 49.98% O 1 character in a s0.79 p3 hybrid
__has 50.02% O 2 character in a s0.79 p3 hybrid
2. A bonding orbital for O1-F3 with 1.9961 electrons
__has 42.00% O 1 character in a s0.12 p3 hybrid
__has 58.00% F 3 character in a s0.11 p3 hybrid
3. A bonding orbital for O2-F4 with 1.9961 electrons
__has 42.05% O 2 character in a s0.12 p3 hybrid
__has 57.95% F 4 character in a s0.11 p3 hybrid
8. A lone pair orbital for O1 with 1.9988 electrons
__made from a sp0.34 hybrid
9. A lone pair orbital for O1 with 1.8366 electrons
__made from a p3 hybrid
10. A lone pair orbital for O2 with 1.9988 electrons
__made from a sp0.34 hybrid
11. A lone pair orbital for O2 with 1.8356 electrons
__made from a p3 hybrid
12. A lone pair orbital for F3 with 1.9998 electrons
__made from a sp0.14 hybrid
13. A lone pair orbital for F3 with 1.9983 electrons
__made from a p3 hybrid
14. A lone pair orbital for F3 with 1.9961 electrons
__made from a s0.25 p3 hybrid
15. A lone pair orbital for F4 with 1.9998 electrons
__made from a sp0.14 hybrid
16. A lone pair orbital for F4 with 1.9982 electrons
__made from a p3 hybrid
17. A lone pair orbital for F4 with 1.9961 electrons
__made from a s0.25 p3 hybrid
95. A antibonding orbital for O1-F3 with 0.1639 electrons
__has 58.00% O 1 character in a s0.12 p3 hybrid
__has 42.00% F 3 character in a s0.11 p3 hybrid
96. A antibonding orbital for O2-F4 with 0.1629 electrons
__has 57.95% O 2 character in a s0.12 p3 hybrid
__has 42.05% F 4 character in a s0.11 p3 hybrid
-With core pairs on: O 1 O 2 F 3 F 4 -
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Donor Acceptor Interactions in the Best Lewis Structure
The localized orbitals in your best Lewis structure
can interact strongly. A filled bonding or lone pair orbital can
act as a donor and an empty or filled bonding, antibonding, or
lone pair orbital can act as an acceptor. These
interactions can strengthen and weaken bonds. For example, a
lone pair donor->antibonding acceptor orbital interaction
will weaken the bond
associated with the antibonding orbital. Conversly, an interaction
with a bonding pair as the acceptor will strengthen the bond.
Strong electron delocalization in your best Lewis structure will
also show up as donor-acceptor interactions.
Interactions greater than 20 kJ/mol for bonding and lone pair
orbitals are listed below.
The interaction of the second lone pair donor orbital, 9, for O1 with
the antibonding acceptor orbital, 96, for O2-F4 is 326. kJ/mol.
The interaction of the second lone pair donor orbital, 11, for O2 with
the antibonding acceptor orbital, 95, for O1-F3 is 328. kJ/mol.
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Molecular Orbital Energies
The orbital energies are given in eV, where 1 eV=96.49 kJ/mol.
Orbitals with very low energy are core 1s orbitals.
More antibonding orbitals than you might expect are sometimes
listed, because d orbitals are always included for heavy
atoms and p orbitals are included for H atoms.
Up spins are shown with a ^ and down spins are shown as v.
21 ----- 6.513
20 ----- 1.212
19 ----- -6.402
18 ----- -6.504
17 -^-v- -9.527
16 -^-v- -9.541
15 -^-v- -9.902
14 -^-v- -10.00
13 -^-v- -11.01
12 -^-v- -11.22
11 -^-v- -15.69
10 -^-v- -15.95
9 -^-v- -16.70
8 -^-v- -21.95
7 -^-v- -28.71
6 -^-v- -29.39
5 -^-v- -35.60
4 -^-v- -514.0
3 -^-v- -514.0
2 -^-v- -656.6
1 -^-v- -656.6
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Total Electronic Energy
The total electronic energy is a very large number, so by convention
the units are given in atomic units, that is Hartrees (H). One
Hartree is 2625.5 kJ/mol. The energy reference is for totally
dissociated atoms. In other words, the reference state is a gas
consisting of nuclei and electrons all at infinite distance from
each other. The electronic energy includes all electric
interactions and the kinetic energy of the electrons. This energy
does not include translation, rotation, or vibration of the
the molecule.
Total electronic energy = -350.0094168244 Hartrees
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