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All results from a given calculation for CHNCH2 (2H-Azirine)

using model chemistry: QCISD/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 QCISD/3-21G
 hartrees
Energy at 0K-131.387334
Energy at 298.15K-131.390286
HF Energy-131.062797
Nuclear repulsion energy61.776906
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/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' 3239 3139 1.12      
2 A' 3158 3061 4.68      
3 A' 1585 1536 3.06      
4 A' 1510 1464 1.86      
5 A' 1199 1162 16.63      
6 A' 1027 995 19.23      
7 A' 944 915 37.43      
8 A' 593 575 2.16      
9 A" 3264 3163 12.56      
10 A" 1106 1072 1.26      
11 A" 956 927 0.24      
12 A" 781 757 26.25      

Unscaled Zero Point Vibrational Energy (zpe) 9680.8 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 9382.6 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/3-21G
ABC
1.14443 0.68106 0.46847

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.905 -0.148 0.000
C2 0.000 0.765 0.000
C3 0.693 -0.569 0.000
H4 0.076 1.842 0.000
H5 1.051 -0.993 0.931
H6 1.051 -0.993 -0.931

Atom - Atom Distances (Å)
  N1 C2 C3 H4 H5 H6
N11.28551.65342.21802.32582.3258
C21.28551.50361.07922.24992.2499
C31.65341.50362.48851.08391.0839
H42.21801.07922.48853.13883.1388
H52.32582.24991.08393.13881.8628
H62.32582.24991.08393.13881.8628

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 72.231 N1 C2 H4 139.254
N1 C3 C2 47.769 N1 C3 H5 114.752
N1 C3 H6 114.752 C2 N1 C3 60.000
C2 C3 N1 47.769 C2 C3 H5 119.929
C2 C3 H6 119.929 C3 C2 H4 148.515
H5 C3 H6 118.476
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability