return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for CHNCH2 (2H-Azirine)

using model chemistry: QCISD(T)=FULL/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD(T)=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-132.518386
Energy at 298.15K-132.521425
HF Energy-131.883752
Nuclear repulsion energy63.680403
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 QCISD(T)=FULL/6-311+G(3df,2p)
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' 3240 3240        
2 A' 3121 3121        
3 A' 1689 1689        
4 A' 1516 1516        
5 A' 1312 1312        
6 A' 1054 1054        
7 A' 1004 1004        
8 A' 682 682        
9 A" 3215 3215        
10 A" 1113 1113        
11 A" 989 989        
12 A" 779 779        

Unscaled Zero Point Vibrational Energy (zpe) 9856.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9856.6 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 QCISD(T)=FULL/6-311+G(3df,2p)
ABC
1.18476 0.74511 0.50416

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/6-311+G(3df,2p)

Point Group is Cs

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability