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: mPW1PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31G**
 hartrees
Energy at 0K-132.679418
Energy at 298.15K-132.681977
HF Energy-132.679418
Nuclear repulsion energy59.556724
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 mPW1PW91/6-31G**
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' 3531 3360 13.10      
2 A' 3215 3059 9.37      
3 A' 2174 2069 348.71      
4 A' 1454 1383 3.54      
5 A' 1186 1129 23.69      
6 A' 1037 987 202.42      
7 A' 717 682 103.25      
8 A' 481 458 21.95      
9 A" 3309 3148 0.86      
10 A" 1004 955 1.18      
11 A" 913 869 59.21      
12 A" 421 401 0.13      

Unscaled Zero Point Vibrational Energy (zpe) 9720.8 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 9249.3 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 mPW1PW91/6-31G**
ABC
6.73841 0.32302 0.31685

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.006 -1.251 0.000
C2 0.000 0.059 0.000
N3 -0.105 1.280 0.000
H4 -0.002 -1.798 0.934
H5 -0.002 -1.798 -0.934
H6 0.775 1.794 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.31012.53301.08201.08203.1440
C21.31011.22542.07802.07801.9005
N32.53301.22543.21743.21741.0191
H41.08202.07803.21741.86813.7915
H51.08202.07803.21741.86813.7915
H63.14401.90051.01913.79153.7915

picture of Ethenimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 174.825 C2 C1 H4 120.309
C2 C1 H5 120.309 C2 N3 H6 115.402
H4 C1 H5 119.377
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.428      
2 C 0.440      
3 N -0.638      
4 H 0.169      
5 H 0.169      
6 H 0.287      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.561 -0.476 0.000 1.632
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.771 3.033 0.000
y 3.033 -16.030 0.000
z 0.000 0.000 -16.809
Traceless
 xyz
x -2.352 3.033 0.000
y 3.033 1.760 0.000
z 0.000 0.000 0.592
Polar
3z2-r21.184
x2-y2-2.741
xy3.033
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.020 0.211 0.000
y 0.211 7.106 0.000
z 0.000 0.000 2.460


<r2> (average value of r2) Å2
<r2> 43.728
(<r2>)1/2 6.613