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 H2CCNH (Ethenimine)

using model chemistry: HF/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/CEP-121G
 hartrees
Energy at 0K-22.278814
Energy at 298.15K-22.281541
HF Energy-22.278814
Nuclear repulsion energy31.751104
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 HF/CEP-121G
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' 3706 3382 41.99      
2 A' 3309 3019 6.90      
3 A' 2187 1996 557.69      
4 A' 1562 1425 6.47      
5 A' 1203 1098 15.45      
6 A' 1023 934 428.53      
7 A' 922 841 152.98      
8 A' 505 461 37.75      
9 A" 3421 3121 1.29      
10 A" 1128 1029 0.63      
11 A" 988 902 103.49      
12 A" 453 413 0.46      

Unscaled Zero Point Vibrational Energy (zpe) 10203.1 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 9310.3 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 HF/CEP-121G
ABC
7.11321 0.31943 0.31297

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.056 -1.260 0.000
C2 0.000 0.056 0.000
N3 -0.160 1.275 0.000
H4 0.079 -1.802 0.926
H5 0.079 -1.802 -0.926
H6 0.626 1.905 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.31752.54431.07311.07313.2160
C21.31751.22922.07732.07731.9518
N32.54431.22923.22173.22171.0070
H41.07312.07733.22171.85273.8594
H51.07312.07733.22171.85273.8594
H63.21601.95181.00703.85943.8594

picture of Ethenimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 174.962 C2 C1 H4 120.322
C2 C1 H5 120.322 C2 N3 H6 121.255
H4 C1 H5 119.356
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.623      
2 C 0.038      
3 N -0.119      
4 H 0.194      
5 H 0.194      
6 H 0.317      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.971 -0.483 0.000 2.029
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.540 3.727 0.000
y 3.727 -16.451 0.000
z 0.000 0.000 -17.540
Traceless
 xyz
x -3.545 3.727 0.000
y 3.727 2.589 0.000
z 0.000 0.000 0.956
Polar
3z2-r21.911
x2-y2-4.089
xy3.727
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.308 -0.106 0.000
y -0.106 7.913 0.000
z 0.000 0.000 2.474


<r2> (average value of r2) Å2
<r2> 38.226
(<r2>)1/2 6.183