H3N7
\ /
H5C1 - N2
/ \
H4N6
Tell me about the atomic charges, dipole moment, bond lengths, angles, bond orders,
molecular orbital energies, or total energy.
Tell me about the best Lewis structure.

Atomic Charges and Dipole Moment

C1 charge=-0.513
N2 charge= 0.647
H3 charge= 0.205
H4 charge= 0.205
H5 charge= 0.206
N6 charge=-0.375
N7 charge=-0.375
with a dipole moment of 4.82007 Debye

Bond Lengths:

between N2 and N6: distance=1.280 ang___ between N2 and N7: distance=1.280 ang___
between N6 and N7: distance=1.912 ang___

Bond Angles:

for H3-C1-N2: angle=107.8 deg___ for H4-C1-N2: angle=108.0 deg___
for H5-C1-N2: angle=107.8 deg___ for N6-N2-C1: angle=131.6 deg___
for N7-N2-C1: angle=131.6 deg___

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Bond Orders (Mulliken):

between N2 and N6: order=0.447___ between N2 and N7: order=0.447___
between N6 and N7: order=0.169___

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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

9. A lone pair orbital for N2 with 1.9934 electrons
__made from a sp0.77 hybrid

10. A lone pair orbital for N2 with 1.9830 electrons
__made from a p-pi orbital ( 93.96% p 6.04% d)

11. A lone pair orbital for N2 with 1.9669 electrons
__made from a p-pi orbital ( 91.30% p 8.70% d)

16. A lone pair orbital for N6 with 1.9987 electrons
__made from a s orbital

17. A lone pair orbital for N6 with 1.9957 electrons
__made from a p-pi orbital ( 98.32% p 1.68% d)

18. A lone pair orbital for N6 with 1.9955 electrons
__made from a p3 hybrid

19. A lone pair orbital for N6 with 1.9642 electrons
__made from a p3 d0.07 hybrid

20. A lone pair orbital for N7 with 1.9987 electrons
__made from a s orbital

21. A lone pair orbital for N7 with 1.9957 electrons
__made from a p-pi orbital ( 98.32% p 1.68% d)

22. A lone pair orbital for N7 with 1.9955 electrons
__made from a p3 hybrid

23. A lone pair orbital for N7 with 1.9642 electrons
__made from a p3 d0.07 hybrid

-With core pairs on: C 1 N 2 N 6 N 7 -

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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 lone pair donor orbital, 9, for N2 with the lone pair acceptor orbital, 5, for C1 is 4.26 kJ/mol.

The interaction of lone pair donor orbital, 9, for N2 with the second lone pair acceptor orbital, 6, for C1 is 2.59 kJ/mol.

The interaction of lone pair donor orbital, 9, for N2 with the 4th lone pair acceptor orbital, 8, for C1 is 4.39 kJ/mol.

The interaction of the third lone pair donor orbital, 11, for N2 with the third lone pair acceptor orbital, 7, for C1 is 12.8 kJ/mol.

The interaction of the second lone pair donor orbital, 10, for N2 with the lone pair acceptor orbital, 13, for H3 is 2.13 kJ/mol.

The interaction of the third lone pair donor orbital, 11, for N2 with the lone pair acceptor orbital, 14, for H4 is 7.19 kJ/mol.

The interaction of the second lone pair donor orbital, 10, for N2 with the lone pair acceptor orbital, 15, for H5 is 2.13 kJ/mol.

The interaction of lone pair donor orbital, 16, for N6 with the lone pair acceptor orbital, 5, for C1 is 2.34 kJ/mol.

The interaction of lone pair donor orbital, 16, for N6 with the 4th lone pair acceptor orbital, 12, for N2 is 2.59 kJ/mol.

The interaction of 4th lone pair donor orbital, 19, for N6 with the 4th lone pair acceptor orbital, 12, for N2 is 106. kJ/mol.

The interaction of lone pair donor orbital, 20, for N7 with the lone pair acceptor orbital, 5, for C1 is 2.34 kJ/mol.

The interaction of lone pair donor orbital, 20, for N7 with the 4th lone pair acceptor orbital, 12, for N2 is 2.59 kJ/mol.

The interaction of 4th lone pair donor orbital, 23, for N7 with the 4th lone pair acceptor orbital, 12, for N2 is 106. 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.

19 ----- 1.361

18 ----- 0.768


17 ----- -2.638


16 ----- -3.854


15 -^-v- -5.275


14 -^-v- -7.530


13 -^-v- -9.560

12 -^-v- -10.54

11 -^-v- -10.97

10 -^-v- -11.81


9 -^-v- -13.17


8 -^-v- -15.00


7 -^-v- -20.59

6 -^-v- -20.71


5 -^-v- -28.74


4 -^-v- -268.5


3 -^-v- -378.8 2 -^-v- -378.8


1 -^-v- -382.0

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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 = -204.0537871469 Hartrees

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