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: MP4=FULL/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 MP4=FULL/3-21G
 hartrees
Energy at 0K-131.349905
Energy at 298.15K-131.352445
HF Energy-131.010681
Nuclear repulsion energy60.379520
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 MP4=FULL/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' 3339 3268        
2 A' 3059 2994        
3 A' 1657 1622        
4 A' 1367 1338        
5 A' 1019 998        
6 A' 761 745        
7 A' 567 555        
8 A" 3278 3209        
9 A" 1111 1088        
10 A" 994 973        
11 A" 692 677        
12 A" 413 404        

Unscaled Zero Point Vibrational Energy (zpe) 9128.5 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 8934.9 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 MP4=FULL/3-21G
ABC
1.02902 0.68774 0.43231

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.039 0.985 0.000
C2 -0.039 -0.516 0.650
C3 -0.039 -0.516 -0.650
H4 0.980 1.250 0.000
H5 -0.123 -0.977 1.619
H6 -0.123 -0.977 -1.619

Atom - Atom Distances (Å)
  N1 C2 C3 H4 H5 H6
N11.63621.63621.05202.54492.5449
C21.63621.30072.13961.07552.3168
C31.63621.30072.13962.31681.0755
H41.05202.13962.13962.96522.9652
H52.54491.07552.31682.96523.2372
H62.54492.31681.07552.96523.2372

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 66.578 N1 C2 H5 138.661
N1 C3 C2 66.578 N1 C3 H6 138.661
C2 N1 C3 46.844 C2 N1 H4 103.337
C2 C3 H6 154.190 C3 N1 H4 103.337
C3 C2 H5 154.190
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability