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: CCD/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCD/6-31G**
 hartrees
Energy at 0K-132.297766
Energy at 298.15K-132.300853
HF Energy-131.842616
Nuclear repulsion energy63.689016
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 CCD/6-31G**
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' 3318 3111 1.35      
2 A' 3193 2994 20.47      
3 A' 1770 1659 8.33      
4 A' 1577 1478 0.24      
5 A' 1367 1282 7.87      
6 A' 1097 1029 0.31      
7 A' 1049 983 42.30      
8 A' 730 684 9.90      
9 A" 3285 3080 27.28      
10 A" 1152 1080 2.32      
11 A" 1018 955 0.16      
12 A" 800 750 14.83      

Unscaled Zero Point Vibrational Energy (zpe) 10178.1 cm-1
Scaled (by 0.9376) Zero Point Vibrational Energy (zpe) 9542.9 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 CCD/6-31G**
ABC
1.18148 0.74752 0.50426

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.866 -0.172 0.000
C2 0.000 0.747 0.000
C3 0.655 -0.531 0.000
H4 0.046 1.824 0.000
H5 1.042 -0.958 0.917
H6 1.042 -0.958 -0.917

Atom - Atom Distances (Å)
  N1 C2 C3 H4 H5 H6
N11.26261.56282.19452.25822.2582
C21.26261.43641.07812.19862.1986
C31.56281.43642.43301.08291.0829
H42.19451.07812.43303.09413.0941
H52.25822.19861.08293.09411.8338
H62.25822.19861.08293.09411.8338

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 70.428 N1 C2 H4 139.147
N1 C3 C2 49.572 N1 C3 H5 116.013
N1 C3 H6 116.013 C2 N1 C3 60.000
C2 C3 N1 49.572 C2 C3 H5 120.906
C2 C3 H6 120.906 C3 C2 H4 150.425
H5 C3 H6 115.719
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability