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

using model chemistry: MP2/CEP-121G*

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/CEP-121G*
 hartrees
Energy at 0K-22.677961
Energy at 298.15K-22.680632
HF Energy-22.250734
Nuclear repulsion energy33.314335
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/CEP-121G*
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' 3368 3209 0.62      
2 A' 3345 3187 23.79      
3 A' 1711 1631 6.94      
4 A' 1383 1318 13.61      
5 A' 1082 1031 0.64      
6 A' 893 851 28.31      
7 A' 546 521 103.75      
8 A" 3312 3156 10.49      
9 A" 1158 1103 42.89      
10 A" 965 919 14.41      
11 A" 689 656 8.49      
12 A" 534 508 4.66      

Unscaled Zero Point Vibrational Energy (zpe) 9492.3 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 9044.3 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/CEP-121G*
ABC
1.03143 0.78587 0.46803

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.033 0.913 0.000
C2 -0.033 -0.485 0.647
C3 -0.033 -0.485 -0.647
H4 0.950 1.227 0.000
H5 -0.159 -0.899 1.636
H6 -0.159 -0.899 -1.636

Atom - Atom Distances (Å)
  N1 C2 C3 H4 H5 H6
N11.54081.54081.03222.44432.4443
C21.54081.29502.07771.07882.3239
C31.54081.29502.07772.32391.0788
H41.03222.07772.07772.90262.9026
H52.44431.07882.32392.90263.2716
H62.44432.32391.07882.90263.2716

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 65.150 N1 C2 H5 137.138
N1 C3 C2 65.150 N1 C3 H6 137.138
C2 N1 C3 49.700 C2 N1 H4 106.013
C2 C3 H6 156.361 C3 N1 H4 106.013
C3 C2 H5 156.361
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability