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 N2F2 (Dinitrogen difluoride, (E)-)

using model chemistry: HF/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at HF/CEP-31G
 hartrees
Energy at 0K-66.780844
Energy at 298.15K-66.782827
Nuclear repulsion energy62.679526
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 HF/CEP-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 1827 1647 0.00      
2 Ag 1182 1065 0.00      
3 Ag 647 583 0.00      
4 Au 391 353 8.38      
5 Bu 1143 1030 211.51      
6 Bu 441 397 20.73      

Unscaled Zero Point Vibrational Energy (zpe) 2814.9 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 2537.4 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 HF/CEP-31G
ABC
2.62678 0.15178 0.14349

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
F1 0.589 1.570 0.000
N2 0.589 0.180 0.000
N3 -0.589 -0.180 0.000
F4 -0.589 -1.570 0.000

Atom - Atom Distances (Å)
  F1 N2 N3 F4
F11.39012.10973.3541
N21.39011.23142.1097
N32.10971.23141.3901
F43.35412.10971.3901

picture of Dinitrogen difluoride, (E)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F1 N2 N3 107.018 N2 N3 F4 107.018
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 F -0.207      
2 N 0.207      
3 N 0.207      
4 F -0.207      


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 -22.630 -0.691 0.000
y -0.691 -24.438 0.000
z 0.000 0.000 -19.598
Traceless
 xyz
x -0.612 -0.691 0.000
y -0.691 -3.325 0.000
z 0.000 0.000 3.936
Polar
3z2-r27.872
x2-y21.809
xy-0.691
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.487 1.181 0.000
y 1.181 4.193 0.000
z 0.000 0.000 0.866


<r2> (average value of r2) Å2
<r2> 57.045
(<r2>)1/2 7.553