return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for N2 (Nitrogen diatomic)

using model chemistry: B2PLYP=FULLultrafine/Def2TZVPP

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 B2PLYP=FULLultrafine/Def2TZVPP
 hartrees
Energy at 0K-109.248145
Energy at 298.15K 
HF Energy-109.378085
Nuclear repulsion energy23.605274
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 B2PLYP=FULLultrafine/Def2TZVPP
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 2350 2350 0.00 16.37 0.18 0.31

Unscaled Zero Point Vibrational Energy (zpe) 1174.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1174.9 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 B2PLYP=FULLultrafine/Def2TZVPP
B
1.99539

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/Def2TZVPP

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.549
N2 0.000 0.000 -0.549

Atom - Atom Distances (Å)
  N1 N2
N11.0985
N21.0985

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

State 2 (3Π)

Jump to S1C1
Energy calculated at B2PLYP=FULLultrafine/Def2TZVPP
 hartrees
Energy at 0K-109.248145
Energy at 298.15K 
HF Energy-109.110017
Nuclear repulsion energy21.414190
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 B2PLYP=FULLultrafine/Def2TZVPP
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 1755 1755 0.00 9461.19 0.30 0.46

Unscaled Zero Point Vibrational Energy (zpe) 877.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 877.6 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 B2PLYP=FULLultrafine/Def2TZVPP
B
1.64215

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/Def2TZVPP

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.605
N2 0.000 0.000 -0.605

Atom - Atom Distances (Å)
  N1 N2
N11.2109
N21.2109

picture of Nitrogen diatomic state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/Def2TZVPP 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 -10.373 0.000 0.000
y 0.000 -11.693 0.000
z 0.000 0.000 -10.246
Traceless
 xyz
x 0.596 0.000 0.000
y 0.000 -1.384 0.000
z 0.000 0.000 0.787
Polar
3z2-r21.575
x2-y21.320
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x -3.249 0.000 0.000
y 0.000 -0.162 0.000
z 0.000 0.000 2.076


<r2> (average value of r2) Å2
<r2> 11.859
(<r2>)1/2 3.444