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: B3LYPultrafine/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 B3LYPultrafine/3-21G
 hartrees
Energy at 0K-131.922652
Energy at 298.15K-131.925642
HF Energy-131.922652
Nuclear repulsion energy62.446300
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 B3LYPultrafine/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' 3247 3133 1.65      
2 A' 3155 3045 6.91      
3 A' 1634 1576 4.20      
4 A' 1524 1471 0.52      
5 A' 1199 1157 17.78      
6 A' 1025 989 10.12      
7 A' 960 927 58.51      
8 A' 630 608 4.77      
9 A" 3259 3145 15.37      
10 A" 1107 1069 1.42      
11 A" 961 927 0.04      
12 A" 811 783 25.73      

Unscaled Zero Point Vibrational Energy (zpe) 9756.5 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 9414.1 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 B3LYPultrafine/3-21G
ABC
1.16365 0.69988 0.48019

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.894 -0.150 0.000
C2 0.000 0.757 0.000
C3 0.681 -0.560 0.000
H4 0.077 1.831 0.000
H5 1.045 -0.982 0.927
H6 1.045 -0.982 -0.927

Atom - Atom Distances (Å)
  N1 C2 C3 H4 H5 H6
N11.27271.62722.20522.30482.3048
C21.27271.48211.07682.23072.2307
C31.62721.48212.46561.08221.0822
H42.20521.07682.46563.11613.1161
H52.30482.23071.08223.11611.8547
H62.30482.23071.08223.11611.8547

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 71.957 N1 C2 H4 139.492
N1 C3 C2 48.043 N1 C3 H5 115.085
N1 C3 H6 115.085 C2 N1 C3 60.000
C2 C3 N1 48.043 C2 C3 H5 120.093
C2 C3 H6 120.093 C3 C2 H4 148.551
H5 C3 H6 117.950
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.350      
2 C 0.056      
3 C -0.352      
4 H 0.213      
5 H 0.217      
6 H 0.217      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.812 1.227 0.000 2.189
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.483 -1.560 0.000
y -1.560 -15.726 0.000
z 0.000 0.000 -17.411
Traceless
 xyz
x -3.914 -1.560 0.000
y -1.560 3.221 0.000
z 0.000 0.000 0.693
Polar
3z2-r21.386
x2-y2-4.756
xy-1.560
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.411 -0.639 0.000
y -0.639 4.013 0.000
z 0.000 0.000 2.247


<r2> (average value of r2) Å2
<r2> 34.199
(<r2>)1/2 5.848