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 CH2CHNH2 (aminoethene)

using model chemistry: PBEPBE/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at PBEPBE/6-31G
 hartrees
Energy at 0K-133.735288
Energy at 298.15K-133.740424
HF Energy-133.735288
Nuclear repulsion energy70.944053
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 PBEPBE/6-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3701 3650 20.66      
2 A 3568 3519 26.87      
3 A 3216 3172 20.52      
4 A 3119 3076 2.58      
5 A 3112 3069 21.96      
6 A 1693 1670 205.73      
7 A 1654 1632 24.09      
8 A 1451 1430 0.60      
9 A 1334 1316 21.98      
10 A 1279 1262 33.62      
11 A 1057 1042 19.72      
12 A 972 959 24.39      
13 A 954 941 1.29      
14 A 782 771 103.45      
15 A 683 673 7.26      
16 A 452 445 150.27      
17 A 451 445 2.63      
18 A 256 252 232.83      

Unscaled Zero Point Vibrational Energy (zpe) 14867.0 cm-1
Scaled (by 0.9862) Zero Point Vibrational Energy (zpe) 14661.8 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 PBEPBE/6-31G
ABC
1.91822 0.32711 0.27946

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.270 -0.194 -0.000
C2 -0.066 0.428 0.000
N3 1.184 -0.174 -0.000
H4 -1.366 -1.284 0.000
H5 -2.192 0.387 0.000
H6 -0.018 1.524 -0.000
H7 1.273 -1.184 0.000
H8 2.032 0.375 0.001

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6 H7 H8
C11.35542.45351.09441.09012.12592.72833.3504
C21.35541.38742.15052.12631.09622.09552.0986
N32.45351.38742.78093.42192.08001.01321.0105
H41.09442.15052.78091.86443.11512.64083.7815
H51.09012.12633.42191.86442.45343.80414.2238
H62.12591.09622.08003.11512.45342.99912.3496
H72.72832.09551.01322.64083.80412.99911.7335
H83.35042.09861.01053.78154.22382.34961.7335

picture of aminoethene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 126.887 C1 C2 H6 119.885
C2 C1 H4 122.403 C2 C1 H5 120.410
C2 N3 H7 120.804 C2 N3 H8 121.328
N3 C2 H6 113.228 H4 C1 H5 117.186
H7 N3 H8 117.868
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.371      
2 C 0.107      
3 N -0.735      
4 H 0.110      
5 H 0.123      
6 H 0.135      
7 H 0.315      
8 H 0.316      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.940 -0.015 0.004 1.940
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.824 -0.320 0.005
y -0.320 -15.951 -0.000
z 0.005 -0.000 -22.411
Traceless
 xyz
x 3.358 -0.320 0.005
y -0.320 3.166 -0.000
z 0.005 -0.000 -6.524
Polar
3z2-r2-13.048
x2-y20.128
xy-0.320
xz0.005
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.445 0.417 0.000
y 0.417 4.164 0.000
z 0.000 0.000 1.467


<r2> (average value of r2) Å2
<r2> 50.412
(<r2>)1/2 7.100