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 CN2 (3H-Diazirin-3-ylidene)

using model chemistry: HF/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/3-21G
 hartrees
Energy at 0K-145.711011
Energy at 298.15K-145.710768
HF Energy-145.711011
Nuclear repulsion energy51.347187
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/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 1459 1321 16.45      
2 A1 994 900 31.39      
3 B2 797 722 0.24      

Unscaled Zero Point Vibrational Energy (zpe) 1625.4 cm-1
Scaled (by 0.9056) Zero Point Vibrational Energy (zpe) 1472.0 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/3-21G
ABC
1.42229 1.27127 0.67128

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.879
N2 0.000 0.651 -0.377
N3 0.000 -0.651 -0.377

Atom - Atom Distances (Å)
  C1 N2 N3
C11.41481.4148
N21.41481.3011
N31.41481.3011

picture of 3H-Diazirin-3-ylidene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 N3 62.625 C1 N3 N2 62.625
N2 C1 N3 54.749
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.410      
2 N -0.205      
3 N -0.205      


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 0.059 0.059
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.949 0.000 0.000
y 0.000 -18.783 0.000
z 0.000 0.000 -20.067
Traceless
 xyz
x 4.476 0.000 0.000
y 0.000 -1.275 0.000
z 0.000 0.000 -3.201
Polar
3z2-r2-6.403
x2-y23.834
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.607 0.000 0.000
y 0.000 2.542 0.000
z 0.000 0.000 2.702


<r2> (average value of r2) Å2
<r2> 23.755
(<r2>)1/2 4.874