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: CCSD/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCSD/cc-pVDZ
 hartrees
Energy at 0K-132.243252
Energy at 298.15K-132.245978
HF Energy-131.785431
Nuclear repulsion energy62.549716
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 CCSD/cc-pVDZ
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' 3374 3196 1.72      
2 A' 3325 3150 30.50      
3 A' 1762 1669 5.51      
4 A' 1390 1317 12.54      
5 A' 1095 1037 2.33      
6 A' 890 843 18.48      
7 A' 540 511 65.37      
8 A" 3317 3142 12.34      
9 A" 1174 1112 35.12      
10 A" 972 921 14.01      
11 A" 714 677 2.88      
12 A" 583 552 4.25      

Unscaled Zero Point Vibrational Energy (zpe) 9568.4 cm-1
Scaled (by 0.9473) Zero Point Vibrational Energy (zpe) 9064.1 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 CCSD/cc-pVDZ
ABC
1.02879 0.79771 0.47153

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.038 0.906 0.000
C2 -0.038 -0.479 0.648
C3 -0.038 -0.479 -0.648
H4 0.950 1.219 0.000
H5 -0.119 -0.909 1.641
H6 -0.119 -0.909 -1.641

Atom - Atom Distances (Å)
  N1 C2 C3 H4 H5 H6
N11.52881.52881.03572.44902.4490
C21.52881.29562.06821.08612.3309
C31.52881.29562.06822.33091.0861
H41.03572.06822.06822.89272.8927
H52.44901.08612.33092.89273.2830
H62.44902.33091.08612.89273.2830

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 64.931 N1 C2 H5 138.330
N1 C3 C2 64.931 N1 C3 H6 138.330
C2 N1 C3 50.138 C2 N1 H4 105.902
C2 C3 H6 156.193 C3 N1 H4 105.902
C3 C2 H5 156.193
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability