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: PBE1PBE/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBE1PBE/6-31+G**
 hartrees
Energy at 0K-132.474691
Energy at 298.15K-132.477468
HF Energy-132.474691
Nuclear repulsion energy63.384103
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 PBE1PBE/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 A' 3389 3238 3.26      
2 A' 3376 3225 12.43      
3 A' 1817 1735 9.17      
4 A' 1359 1299 11.81      
5 A' 1101 1052 7.21      
6 A' 916 875 30.24      
7 A' 577 551 100.20      
8 A" 3327 3179 18.68      
9 A" 1177 1125 50.14      
10 A" 977 933 14.05      
11 A" 766 732 8.57      
12 A" 592 565 7.92      

Unscaled Zero Point Vibrational Energy (zpe) 9686.9 cm-1
Scaled (by 0.9553) Zero Point Vibrational Energy (zpe) 9253.9 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 PBE1PBE/6-31+G**
ABC
1.05597 0.82077 0.48427

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.034 0.890 0.000
C2 -0.034 -0.473 0.639
C3 -0.034 -0.473 -0.639
H4 0.931 1.236 0.000
H5 -0.139 -0.892 1.625
H6 -0.139 -0.892 -1.625

Atom - Atom Distances (Å)
  N1 C2 C3 H4 H5 H6
N11.50511.50511.02612.41332.4133
C21.50511.27782.06451.07612.3044
C31.50511.27782.06452.30441.0761
H41.02612.06452.06452.88322.8832
H52.41331.07612.30442.88323.2496
H62.41332.30441.07612.88323.2496

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 64.882 N1 C2 H5 137.817
N1 C3 C2 64.882 N1 C3 H6 137.817
C2 N1 C3 50.236 C2 N1 H4 107.796
C2 C3 H6 156.367 C3 N1 H4 107.796
C3 C2 H5 156.367
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.406      
2 C -0.127      
3 C -0.127      
4 H 0.283      
5 H 0.189      
6 H 0.189      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.289 -1.717 0.000 2.147
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.848 2.728 0.000
y 2.728 -19.908 0.000
z 0.000 0.000 -14.232
Traceless
 xyz
x -1.778 2.728 0.000
y 2.728 -3.368 0.000
z 0.000 0.000 5.146
Polar
3z2-r210.292
x2-y21.060
xy2.728
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.079 0.154 0.000
y 0.154 4.384 0.000
z 0.000 0.000 4.927


<r2> (average value of r2) Å2
<r2> 33.483
(<r2>)1/2 5.786