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: mPW1PW91/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 mPW1PW91/CEP-121G
 hartrees
Energy at 0K-19.781828
Energy at 298.15K-19.781826
HF Energy-19.781828
Nuclear repulsion energy11.686956
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 mPW1PW91/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 2280 2166 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 1139.9 cm-1
Scaled (by 0.9499) Zero Point Vibrational Energy (zpe) 1082.7 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 mPW1PW91/CEP-121G
B
1.87899

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/CEP-121G

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.566
N2 0.000 0.000 -0.566

Atom - Atom Distances (Å)
  N1 N2
N11.1320
N21.1320

picture of Nitrogen diatomic state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.000      
2 N 0.000      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.109 0.000 0.000
y 0.000 -10.109 0.000
z 0.000 0.000 -12.386
Traceless
 xyz
x 1.138 0.000 0.000
y 0.000 1.138 0.000
z 0.000 0.000 -2.277
Polar
3z2-r2-4.553
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.904 0.000 0.000
y 0.000 0.904 0.000
z 0.000 0.000 2.202


<r2> (average value of r2) Å2
<r2> 9.991
(<r2>)1/2 3.161