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: B3LYP/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYP/STO-3G
 hartrees
Energy at 0K-145.508392
Energy at 298.15K-145.508163
HF Energy-145.508392
Nuclear repulsion energy48.373459
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 B3LYP/STO-3G
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 1516 1353 4.03      
2 A1 1084 967 31.43      
3 B2 962 858 1.07      

Unscaled Zero Point Vibrational Energy (zpe) 1780.7 cm-1
Scaled (by 0.8924) Zero Point Vibrational Energy (zpe) 1589.1 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 B3LYP/STO-3G
ABC
1.24504 1.14512 0.59650

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.927
N2 0.000 0.695 -0.397
N3 0.000 -0.695 -0.397

Atom - Atom Distances (Å)
  C1 N2 N3
C11.49531.4953
N21.49531.3906
N31.49531.3906

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 62.289 C1 N3 N2 62.289
N2 C1 N3 55.421
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.099      
2 N -0.050      
3 N -0.050      


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 -0.165 0.165
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.267 0.000 0.000
y 0.000 -16.770 0.000
z 0.000 0.000 -17.736
Traceless
 xyz
x 3.986 0.000 0.000
y 0.000 -1.269 0.000
z 0.000 0.000 -2.718
Polar
3z2-r2-5.435
x2-y23.503
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.047 0.000 0.000
y 0.000 1.564 0.000
z 0.000 0.000 1.709


<r2> (average value of r2) Å2
<r2> 24.074
(<r2>)1/2 4.907