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: MP2/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-132.303419
Energy at 298.15K-132.306454
HF Energy-131.861137
Nuclear repulsion energy63.346495
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 MP2/6-311G*
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' 3263 3101 1.22      
2 A' 3158 3001 16.94      
3 A' 1657 1574 4.60      
4 A' 1532 1456 0.29      
5 A' 1307 1242 9.10      
6 A' 1049 997 0.15      
7 A' 1008 958 59.45      
8 A' 677 644 9.27      
9 A" 3261 3099 18.55      
10 A" 1134 1078 1.11      
11 A" 997 948 0.67      
12 A" 783 744 19.43      

Unscaled Zero Point Vibrational Energy (zpe) 9912.7 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 9420.0 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 MP2/6-311G*
ABC
1.16882 0.73927 0.49896

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.869 -0.175 0.000
C2 0.000 0.752 0.000
C3 0.663 -0.533 0.000
H4 0.029 1.834 0.000
H5 1.037 -0.962 0.924
H6 1.037 -0.962 -0.924

Atom - Atom Distances (Å)
  N1 C2 C3 H4 H5 H6
N11.27041.57332.20062.25962.2596
C21.27041.44581.08262.20592.2059
C31.57331.44582.45041.08501.0850
H42.20061.08262.45043.11233.1123
H52.25962.20591.08503.11231.8476
H62.25962.20591.08503.11231.8476

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 70.452 N1 C2 H4 138.393
N1 C3 C2 49.548 N1 C3 H5 115.191
N1 C3 H6 115.191 C2 N1 C3 60.000
C2 C3 N1 49.548 C2 C3 H5 120.623
C2 C3 H6 120.623 C3 C2 H4 151.155
H5 C3 H6 116.730
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability