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: mPW1PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/6-31+G**
 hartrees
Energy at 0K-147.397531
Energy at 298.15K-147.397380
HF Energy-147.397531
Nuclear repulsion energy52.421138
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 mPW1PW91/6-31+G**
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 1665 1584 14.29      
2 A1 1185 1128 28.49      
3 B2 1056 1005 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 1952.8 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 1858.7 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 mPW1PW91/6-31+G**
ABC
1.47710 1.33012 0.69988

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.860
N2 0.000 0.638 -0.368
N3 0.000 -0.638 -0.368

Atom - Atom Distances (Å)
  C1 N2 N3
C11.38431.3843
N21.38431.2767
N31.38431.2767

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 62.538 C1 N3 N2 62.538
N2 C1 N3 54.924
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.032      
2 N 0.016      
3 N 0.016      


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 -0.581 0.581
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.814 0.000 0.000
y 0.000 -17.831 0.000
z 0.000 0.000 -19.702
Traceless
 xyz
x 3.952 0.000 0.000
y 0.000 -0.573 0.000
z 0.000 0.000 -3.379
Polar
3z2-r2-6.757
x2-y23.017
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.304 0.000 0.000
y 0.000 3.078 0.000
z 0.000 0.000 3.437


<r2> (average value of r2) Å2
<r2> 22.940
(<r2>)1/2 4.790