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: MP2/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 MP2/TZVP
 hartrees
Energy at 0K-132.276912
Energy at 298.15K-132.279626
HF Energy-131.819926
Nuclear repulsion energy63.080926
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 MP2/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' 3408 3231 2.34      
2 A' 3394 3217 14.38      
3 A' 1756 1664 8.26      
4 A' 1353 1283 10.32      
5 A' 1083 1027 1.22      
6 A' 896 849 26.87      
7 A' 562 533 91.18      
8 A" 3350 3176 16.94      
9 A" 1147 1088 42.05      
10 A" 993 941 13.99      
11 A" 746 708 8.49      
12 A" 522 494 3.71      

Unscaled Zero Point Vibrational Energy (zpe) 9605.4 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 9104.9 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 MP2/TZVP
ABC
1.05658 0.80306 0.47878

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.032 0.902 0.000
C2 -0.032 -0.478 0.640
C3 -0.032 -0.478 -0.640
H4 0.940 1.222 0.000
H5 -0.162 -0.901 1.615
H6 -0.162 -0.901 -1.615

Atom - Atom Distances (Å)
  N1 C2 C3 H4 H5 H6
N11.52141.52141.02372.42442.4244
C21.52141.27972.06071.07122.2983
C31.52141.27972.06072.29831.0712
H41.02372.06072.06072.88662.8866
H52.42441.07122.29832.88663.2310
H62.42442.29831.07122.88663.2310

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 65.129 N1 C2 H5 137.824
N1 C3 C2 65.129 N1 C3 H6 137.824
C2 N1 C3 49.741 C2 N1 H4 106.480
C2 C3 H6 155.617 C3 N1 H4 106.480
C3 C2 H5 155.617
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability