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All results from a given calculation for CHNCH2 (2H-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-132.355610
Energy at 298.15K-132.358682
HF Energy-131.878732
Nuclear repulsion energy63.727931
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' 3278 3132 1.02      
2 A' 3150 3009 19.55      
3 A' 1731 1654 10.15      
4 A' 1549 1480 0.04      
5 A' 1333 1274 9.08      
6 A' 1084 1036 0.33      
7 A' 1030 984 50.10      
8 A' 693 662 11.56      
9 A" 3242 3097 20.26      
10 A" 1139 1088 2.19      
11 A" 1000 955 0.14      
12 A" 811 775 17.13      

Unscaled Zero Point Vibrational Energy (zpe) 10021.2 cm-1
Scaled (by 0.9553) Zero Point Vibrational Energy (zpe) 9573.3 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 QCISD/TZVP
ABC
1.19053 0.74372 0.50458

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 -0.866 -0.166 0.000
C2 0.000 0.744 0.000
C3 0.657 -0.534 0.000
H4 0.042 1.822 0.000
H5 1.038 -0.959 0.921
H6 1.038 -0.959 -0.921

Atom - Atom Distances (Å)
  N1 C2 C3 H4 H5 H6
N11.25651.56732.18582.25892.2589
C21.25651.43731.07862.19672.1967
C31.56731.43732.43501.08311.0831
H42.18581.07862.43503.09393.0939
H52.25892.19671.08313.09391.8414
H62.25892.19671.08313.09391.8414

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 70.791 N1 C2 H4 138.665
N1 C3 C2 49.209 N1 C3 H5 115.713
N1 C3 H6 115.713 C2 N1 C3 60.000
C2 C3 N1 49.209 C2 C3 H5 120.634
C2 C3 H6 120.634 C3 C2 H4 150.544
H5 C3 H6 116.431
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability