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All results from a given calculation for CHNHCH (1H-Azirine)

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 CS 1A'
Energy calculated at HF/3-21G
 hartrees
Energy at 0K-131.017505
Energy at 298.15K-131.020485
HF Energy-131.017505
Nuclear repulsion energy62.585601
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 A' 3581 3243 6.30      
2 A' 3490 3161 19.29      
3 A' 1885 1707 6.86      
4 A' 1484 1344 22.27      
5 A' 1092 989 0.69      
6 A' 904 818 18.51      
7 A' 765 692 131.32      
8 A" 3509 3178 23.65      
9 A" 1246 1129 46.43      
10 A" 1106 1002 14.41      
11 A" 959 869 11.01      
12 A" 635 575 5.68      

Unscaled Zero Point Vibrational Energy (zpe) 10328.0 cm-1
Scaled (by 0.9056) Zero Point Vibrational Energy (zpe) 9353.0 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
1.08471 0.75602 0.46618

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.037 0.932 0.000
C2 -0.037 -0.495 0.632
C3 -0.037 -0.495 -0.632
H4 0.925 1.264 0.000
H5 -0.109 -0.926 1.593
H6 -0.109 -0.926 -1.593

Atom - Atom Distances (Å)
  N1 C2 C3 H4 H5 H6
N11.56051.56051.01792.44912.4491
C21.56051.26392.10171.05632.2680
C31.56051.26392.10172.26801.0563
H41.01792.10172.10172.89892.8989
H52.44911.05632.26802.89893.1869
H62.44912.26801.05632.89893.1869

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 66.112 N1 C2 H5 137.915
N1 C3 C2 66.112 N1 C3 H6 137.915
C2 N1 C3 47.777 C2 N1 H4 107.318
C2 C3 H6 155.535 C3 N1 H4 107.318
C3 C2 H5 155.535
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 N -0.566      
2 C -0.138      
3 C -0.138      
4 H 0.289      
5 H 0.276      
6 H 0.276      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.546 -2.098 0.000 2.606
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.856 2.616 0.000
y 2.616 -19.456 0.000
z 0.000 0.000 -14.440
Traceless
 xyz
x -1.908 2.616 0.000
y 2.616 -2.808 0.000
z 0.000 0.000 4.716
Polar
3z2-r29.432
x2-y20.600
xy2.616
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.702 0.449 0.000
y 0.449 3.414 0.000
z 0.000 0.000 4.237


<r2> (average value of r2) Å2
<r2> 34.091
(<r2>)1/2 5.839