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: B2PLYP=FULLultrafine/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 B2PLYP=FULLultrafine/3-21G
 hartrees
Energy at 0K-131.735503
Energy at 298.15K 
HF Energy-131.629195
Nuclear repulsion energy62.191604
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 B2PLYP=FULLultrafine/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' 3280 3280 1.48      
2 A' 3192 3192 5.44      
3 A' 1593 1593 2.78      
4 A' 1515 1515 1.94      
5 A' 1195 1195 19.56      
6 A' 1029 1029 15.62      
7 A' 955 955 49.05      
8 A' 606 606 3.34      
9 A" 3301 3301 12.96      
10 A" 1115 1115 1.29      
11 A" 966 966 0.15      
12 A" 806 806 26.71      

Unscaled Zero Point Vibrational Energy (zpe) 9776.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9776.3 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 B2PLYP=FULLultrafine/3-21G
ABC
1.15332 0.69411 0.47567

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.898 -0.152 0.000
C2 0.000 0.761 0.000
C3 0.687 -0.562 0.000
H4 0.074 1.833 0.000
H5 1.045 -0.984 0.927
H6 1.045 -0.984 -0.927

Atom - Atom Distances (Å)
  N1 C2 C3 H4 H5 H6
N11.28041.63672.20992.30752.3075
C21.28041.49081.07432.23502.2350
C31.63671.49082.47211.07941.0794
H42.20991.07432.47213.12003.1200
H52.30752.23501.07943.12001.8538
H62.30752.23501.07943.12001.8538

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 71.947 N1 C2 H4 139.441
N1 C3 C2 48.053 N1 C3 H5 114.774
N1 C3 H6 114.774 C2 N1 C3 60.000
C2 C3 N1 48.053 C2 C3 H5 119.965
C2 C3 H6 119.965 C3 C2 H4 148.612
H5 C3 H6 118.347
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability