return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: CISD/CEP-121G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D*H 1Σg
Energy calculated at CISD/CEP-121G*
 hartrees
Energy at 0K-19.704839
Energy at 298.15K-19.704836
HF Energy-19.406915
Nuclear repulsion energy11.915234
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 CISD/CEP-121G*
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 2422 2233 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 1210.9 cm-1
Scaled (by 0.9218) Zero Point Vibrational Energy (zpe) 1116.2 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 CISD/CEP-121G*
B
1.95311

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/CEP-121G*

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.555
N2 0.000 0.000 -0.555

Atom - Atom Distances (Å)
  N1 N2
N11.1103
N21.1103

picture of Nitrogen diatomic state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability