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: QCISD/TZVP

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/TZVP
 hartrees
Energy at 0K-132.297875
Energy at 298.15K-132.300616
HF Energy-131.820408
Nuclear repulsion energy63.168049
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/TZVP
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' 3400 3248 2.07      
2 A' 3371 3220 22.22      
3 A' 1778 1699 9.15      
4 A' 1368 1307 11.28      
5 A' 1096 1047 3.22      
6 A' 905 864 24.17      
7 A' 564 539 87.60      
8 A" 3341 3192 13.43      
9 A" 1165 1113 41.11      
10 A" 1001 956 13.73      
11 A" 724 692 6.16      
12 A" 562 537 5.48      

Unscaled Zero Point Vibrational Energy (zpe) 9636.9 cm-1
Scaled (by 0.9553) Zero Point Vibrational Energy (zpe) 9206.1 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 QCISD/TZVP
ABC
1.05935 0.80586 0.48004

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.034 0.900 0.000
C2 -0.034 -0.477 0.639
C3 -0.034 -0.477 -0.639
H4 0.936 1.229 0.000
H5 -0.146 -0.901 1.616
H6 -0.146 -0.901 -1.616

Atom - Atom Distances (Å)
  N1 C2 C3 H4 H5 H6
N11.51811.51811.02402.42242.4224
C21.51811.27732.06411.07142.2972
C31.51811.27732.06412.29721.0714
H41.02402.06412.06412.88462.8846
H52.42241.07142.29722.88463.2328
H62.42242.29721.07142.88463.2328

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 65.122 N1 C2 H5 137.942
N1 C3 C2 65.122 N1 C3 H6 137.942
C2 N1 C3 49.756 C2 N1 H4 106.967
C2 C3 H6 155.862 C3 N1 H4 106.967
C3 C2 H5 155.862
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability