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All results from a given calculation for CH2CHNH2 (aminoethene)

using model chemistry: HF/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at HF/CEP-31G*
 hartrees
Energy at 0K-23.528043
Energy at 298.15K-23.533592
HF Energy-23.528043
Nuclear repulsion energy40.773997
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-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 3889 3492 9.87      
2 A 3783 3397 9.27      
3 A 3422 3073 47.14      
4 A 3373 3029 11.38      
5 A 3335 2995 14.70      
6 A 1870 1680 168.39      
7 A 1807 1623 35.37      
8 A 1557 1398 4.71      
9 A 1417 1273 8.01      
10 A 1369 1229 53.96      
11 A 1144 1027 17.03      
12 A 1095 983 30.45      
13 A 1009 906 6.90      
14 A 924 830 109.93      
15 A 829 744 192.77      
16 A 687 617 178.53      
17 A 479 430 5.45      
18 A 331 297 66.36      

Unscaled Zero Point Vibrational Energy (zpe) 16159.2 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 14511.0 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-31G*
ABC
1.86322 0.32887 0.28246

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.259 -0.201 0.019
C2 0.067 0.438 -0.006
N3 -1.201 -0.170 -0.095
H4 1.333 -1.283 0.020
H5 2.177 0.370 0.013
H6 0.032 1.519 -0.017
H7 -1.192 -1.146 0.141
H8 -1.906 0.312 0.431

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6 H7 H8
C11.35302.46281.08381.08132.11372.62983.2328
C21.35301.40872.13632.11151.08222.02832.0245
N32.46281.40872.76973.42262.09301.00361.0030
H41.08382.13632.76971.85573.08952.53193.6335
H51.08132.11153.42261.85572.43373.69684.1049
H62.11371.08222.09303.08952.43372.93702.3270
H72.62982.02831.00362.53193.69682.93701.6485
H83.23282.02451.00303.63354.10492.32701.6485

picture of aminoethene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 126.176 C1 C2 H6 120.037
C2 C1 H4 122.101 C2 C1 H5 119.893
C2 N3 H7 113.387 C2 N3 H8 113.090
N3 C2 H6 113.691 H4 C1 H5 117.989
H7 N3 H8 110.483
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.521      
2 C -0.102      
3 N -0.554      
4 H 0.178      
5 H 0.166      
6 H 0.206      
7 H 0.314      
8 H 0.312      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.932 0.028 1.324 1.619
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.895 0.188 -2.688
y 0.188 -15.965 -0.165
z -2.688 -0.165 -22.762
Traceless
 xyz
x 1.468 0.188 -2.688
y 0.188 4.364 -0.165
z -2.688 -0.165 -5.832
Polar
3z2-r2-11.664
x2-y2-1.930
xy0.188
xz-2.688
yz-0.165


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.313 -0.926 -0.017
y -0.926 3.951 0.031
z -0.017 0.031 2.364


<r2> (average value of r2) Å2
<r2> 43.757
(<r2>)1/2 6.615