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 CHNHCH (1H-Azirine)

using model chemistry: mPW1PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-132.599125
Energy at 298.15K-132.601922
HF Energy-132.599125
Nuclear repulsion energy63.470942
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 mPW1PW91/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3395 3241 1.47      
2 A' 3359 3207 25.73      
3 A' 1820 1738 4.94      
4 A' 1399 1335 13.12      
5 A' 1100 1050 3.84      
6 A' 921 879 22.87      
7 A' 596 569 65.90      
8 A" 3330 3179 13.79      
9 A" 1180 1127 38.83      
10 A" 976 932 16.35      
11 A" 764 729 4.09      
12 A" 598 571 2.95      

Unscaled Zero Point Vibrational Energy (zpe) 9718.3 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 9278.0 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 mPW1PW91/6-31G(2df,p)
ABC
1.06472 0.81803 0.48522

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.038 0.893 0.000
C2 -0.038 -0.474 0.635
C3 -0.038 -0.474 -0.635
H4 0.932 1.225 0.000
H5 -0.110 -0.893 1.620
H6 -0.110 -0.893 -1.620

Atom - Atom Distances (Å)
  N1 C2 C3 H4 H5 H6
N11.50741.50741.02492.41222.4122
C21.50741.27092.05681.07272.2955
C31.50741.27092.05682.29551.0727
H41.02492.05682.05682.86262.8626
H52.41221.07272.29552.86263.2410
H62.41222.29551.07272.86263.2410

picture of 1H-Azirine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 65.068 N1 C2 H5 137.804
N1 C3 C2 65.068 N1 C3 H6 137.804
C2 N1 C3 49.865 C2 N1 H4 107.082
C2 C3 H6 156.679 C3 N1 H4 107.082
C3 C2 H5 156.679
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.410      
2 C -0.105      
3 C -0.105      
4 H 0.241      
5 H 0.190      
6 H 0.190      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.140 -1.599 0.000 1.964
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.034 2.122 0.000
y 2.122 -18.886 0.000
z 0.000 0.000 -13.910
Traceless
 xyz
x -1.636 2.122 0.000
y 2.122 -2.914 0.000
z 0.000 0.000 4.550
Polar
3z2-r29.100
x2-y20.852
xy2.122
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.509 0.362 0.000
y 0.362 3.798 0.000
z 0.000 0.000 4.543


<r2> (average value of r2) Å2
<r2> 32.970
(<r2>)1/2 5.742