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All results from a given calculation for N2 (Nitrogen diatomic)

using model chemistry: MP2/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D*H 1Σg
2 1 yes D*H 3Π

State 1 (1Σg)

Jump to S2C1
Energy calculated at MP2/SDD
 hartrees
Energy at 0K-109.121099
Energy at 298.15K-109.121094
HF Energy-108.862913
Nuclear repulsion energy22.056608
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 MP2/SDD
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 1831 1768 0.00 7.90 0.26 0.41

Unscaled Zero Point Vibrational Energy (zpe) 915.6 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 883.8 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 MP2/SDD
B
1.74215

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.588
N2 0.000 0.000 -0.588

Atom - Atom Distances (Å)
  N1 N2
N11.1756
N21.1756

picture of Nitrogen diatomic state 1 conformation 1
More geometry information
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability

State 2 (3Π)

Jump to S1C1
Energy calculated at MP2/SDD
 hartrees
Energy at 0K-108.868194
Energy at 298.15K 
HF Energy-108.643274
Nuclear repulsion energy20.233698
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 MP2/SDD
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 1493 1441 0.00 3971.74 0.12 0.21

Unscaled Zero Point Vibrational Energy (zpe) 746.4 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 720.5 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 MP2/SDD
B
1.46609

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.641
N2 0.000 0.000 -0.641

Atom - Atom Distances (Å)
  N1 N2
N11.2815
N21.2815

picture of Nitrogen diatomic state 2 conformation 1
More geometry information
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability