## PO- triplet ion

 O1 - P2
The ion charge is -1. The multiplicity is 3.

## Atomic Charges and Dipole Moment

O1 charge=-0.455
P2 charge=-0.544
with a dipole moment of 0.87261 Debye

## Bond Lengths:

between O1 and P2: distance=1.591 ang___

## Bond Orders (Mulliken):

between O1 and P2: order=1.141___

## 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. The Lewis structure is built for the up and down electrons, separately. Note that the up and down structures can be very different.

### Hybridization in the Best Lewis Structure

#### Down Electrons

1. A bonding orbital for O1-P2 with 1.0000 electrons
__has 78.09% O 1 character in a sp2.38 hybrid
__has 21.91% P 2 character in a s0.59 p3 d0.06 hybrid

8. A lone pair orbital for O1 with 0.9978 electrons

9. A lone pair orbital for O1 with 0.9878 electrons
__made from a p-pi orbital ( 99.95% p)

10. A lone pair orbital for O1 with 0.9878 electrons
__made from a p-pi orbital ( 99.95% p)

11. A lone pair orbital for P2 with 0.9986 electrons

12. A lone pair orbital for P2 with 0.9930 electrons
__made from a p-pi orbital ( 99.77% p 0.23% d)

13. A lone pair orbital for P2 with 0.9930 electrons
__made from a p-pi orbital ( 99.77% p 0.23% d)

-With core pairs on: O 1 P 2 P 2 P 2 P 2 P 2 -

#### Up Electrons

1. A bonding orbital for O1-P2 with 1.0000 electrons
__has 75.49% O 1 character in a sp2.00 hybrid
__has 24.51% P 2 character in a s0.78 p3 d0.06 hybrid

2. A bonding orbital for O1-P2 with 1.0000 electrons
__has 81.80% O 1 character in a p-pi orbital ( 99.91% p 0.09% d)
__has 18.20% P 2 character in a p-pi orbital ( 96.36% p 3.64% d)

3. A bonding orbital for O1-P2 with 1.0000 electrons
__has 81.80% O 1 character in a p-pi orbital ( 99.91% p 0.09% d)
__has 18.20% P 2 character in a p-pi orbital ( 96.36% p 3.64% d)

10. A lone pair orbital for O1 with 0.9967 electrons

11. A lone pair orbital for P2 with 0.9985 electrons

-With core pairs on: O 1 P 2 P 2 P 2 P 2 P 2 -

## 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. Only the spin up electron orbital energies are given.

17 ----- 11.37
16 ----- 10.26 15 ----- 10.26

14 ----- 5.834

13 -^--- 2.374 12 -^--- 2.372

11 -^-v- -1.931 10 -^-v- -1.934

9 -^-v- -2.078

8 -^-v- -6.422

7 -^-v- -16.98

6 -^-v- -116.6 5 -^-v- -116.6
4 -^-v- -116.6

3 -^-v- -164.1

2 -^-v- -499.5

1 -^-v- -2061.

## 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 = -416.6477230469 Hartrees