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 CHNCH2 (2H-Azirine)

using model chemistry: mPW1PW91/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/cc-pVTZ
 hartrees
Energy at 0K-132.691421
Energy at 298.15K-132.694498
HF Energy-132.691421
Nuclear repulsion energy64.106943
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 mPW1PW91/cc-pVTZ
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' 3223 3092 1.81      
2 A' 3114 2987 24.55      
3 A' 1765 1693 10.18      
4 A' 1515 1453 0.16      
5 A' 1336 1281 8.51      
6 A' 1061 1018 0.04      
7 A' 1010 968 55.54      
8 A' 719 690 15.42      
9 A" 3200 3070 19.79      
10 A" 1121 1075 1.56      
11 A" 996 956 0.14      
12 A" 815 782 16.34      

Unscaled Zero Point Vibrational Energy (zpe) 9936.9 cm-1
Scaled (by 0.9592) Zero Point Vibrational Energy (zpe) 9531.4 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 mPW1PW91/cc-pVTZ
ABC
1.20419 0.75341 0.51129

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.860 -0.165 0.000
C2 0.000 0.738 0.000
C3 0.650 -0.530 0.000
H4 0.042 1.818 0.000
H5 1.038 -0.954 0.919
H6 1.038 -0.954 -0.919

Atom - Atom Distances (Å)
  N1 C2 C3 H4 H5 H6
N11.24761.55402.17932.25172.2517
C21.24761.42571.08092.18812.1881
C31.55401.42572.42631.08371.0837
H42.17931.08092.42633.08643.0864
H52.25172.18811.08373.08641.8377
H62.25172.18811.08373.08641.8377

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 70.723 N1 C2 H4 138.639
N1 C3 C2 49.277 N1 C3 H5 116.085
N1 C3 H6 116.085 C2 N1 C3 60.000
C2 C3 N1 49.277 C2 C3 H5 120.762
C2 C3 H6 120.762 C3 C2 H4 150.638
H5 C3 H6 115.954
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.138      
2 C -0.023      
3 C -0.130      
4 H 0.105      
5 H 0.093      
6 H 0.093      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.773 1.273 0.000 2.182
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.403 -1.282 0.000
y -1.282 -15.507 0.000
z 0.000 0.000 -17.362
Traceless
 xyz
x -3.968 -1.282 0.000
y -1.282 3.375 0.000
z 0.000 0.000 0.594
Polar
3z2-r21.187
x2-y2-4.896
xy-1.282
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.189 -0.477 0.000
y -0.477 4.538 0.000
z 0.000 0.000 3.094


<r2> (average value of r2) Å2
<r2> 32.932
(<r2>)1/2 5.739