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 CHNCH2 (2H-Azirine)

using model chemistry: PBEPBEultrafine/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBEultrafine/cc-pVDZ
 hartrees
Energy at 0K-132.521913
Energy at 298.15K-132.524894
HF Energy-132.521913
Nuclear repulsion energy63.013142
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 PBEPBEultrafine/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3128 3110 3.34      
2 A' 3020 3003 19.77      
3 A' 1683 1674 6.05      
4 A' 1427 1419 0.04      
5 A' 1275 1268 6.34      
6 A' 984 978 2.50      
7 A' 944 938 49.57      
8 A' 673 669 12.49      
9 A" 3116 3098 22.05      
10 A" 1061 1055 1.05      
11 A" 940 934 0.17      
12 A" 763 758 13.27      

Unscaled Zero Point Vibrational Energy (zpe) 9506.9 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 9451.8 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 PBEPBEultrafine/cc-pVDZ
ABC
1.15897 0.73056 0.49460

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.874 -0.172 0.000
C2 0.000 0.752 0.000
C3 0.661 -0.537 0.000
H4 0.037 1.852 0.000
H5 1.055 -0.968 0.937
H6 1.055 -0.968 -0.937

Atom - Atom Distances (Å)
  N1 C2 C3 H4 H5 H6
N11.27201.57762.21982.28712.2871
C21.27201.44921.10032.22472.2247
C31.57761.44922.46931.10361.1036
H42.21981.10032.46933.14073.1407
H52.28712.22471.10363.14071.8734
H62.28712.22471.10363.14071.8734

picture of 2H-Azirine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 70.522 N1 C2 H4 138.574
N1 C3 C2 49.478 N1 C3 H5 115.953
N1 C3 H6 115.953 C2 N1 C3 60.000
C2 C3 N1 49.478 C2 C3 H5 120.664
C2 C3 H6 120.664 C3 C2 H4 150.904
H5 C3 H6 116.149
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.132      
2 C 0.018      
3 C -0.008      
4 H 0.022      
5 H 0.050      
6 H 0.050      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.541 1.227 0.000 1.970
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.102 -1.227 0.000
y -1.227 -15.698 0.000
z 0.000 0.000 -17.322
Traceless
 xyz
x -3.592 -1.227 0.000
y -1.227 3.014 0.000
z 0.000 0.000 0.578
Polar
3z2-r21.157
x2-y2-4.404
xy-1.227
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.791 -0.581 0.000
y -0.581 4.438 0.000
z 0.000 0.000 2.788


<r2> (average value of r2) Å2
<r2> 33.647
(<r2>)1/2 5.801