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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

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 C2 1A
Energy calculated at PBEPBE/6-31G*
 hartrees
Energy at 0K-189.046443
Energy at 298.15K 
HF Energy-189.046443
Nuclear repulsion energy116.739268
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
4/u)
Dep P Dep U
1 A 3490 3441 0.10      
2 A 3386 3338 0.35      
3 A 3081 3037 0.16      
4 A 1723 1699 0.14      
5 A 1627 1604 25.03      
6 A 1304 1286 0.71      
7 A 1269 1251 0.00      
8 A 1027 1012 1.54      
9 A 899 886 58.95      
10 A 825 813 137.05      
11 A 543 535 1.11      
12 A 341 336 0.02      
13 A 249 246 20.65      
14 B 3489 3439 1.82      
15 B 3384 3335 5.09      
16 B 3084 3040 57.02      
17 B 1635 1612 39.45      
18 B 1366 1347 10.54      
19 B 1180 1163 70.34      
20 B 1109 1093 0.76      
21 B 771 760 404.53      
22 B 737 727 67.23      
23 B 357 352 61.66      
24 B 257 253 79.83      

Unscaled Zero Point Vibrational Energy (zpe) 18566.8 cm-1
Scaled (by 0.9857) Zero Point Vibrational Energy (zpe) 18301.3 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 PBEPBE/6-31G*
ABC
1.41081 0.13090 0.12177

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.313 0.599 0.049
C2 -0.313 -0.599 0.049
N3 -0.313 1.860 -0.122
N4 0.313 -1.860 -0.122
H5 1.411 0.649 0.051
H6 -1.411 -0.649 0.051
H7 -1.334 1.782 -0.066
H8 1.334 -1.782 -0.066
H9 -0.007 2.540 0.581
H10 0.007 -2.540 0.581

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.35201.41822.46471.09892.12842.03112.59302.03823.1989
C21.35202.46471.41822.12841.09892.59302.03113.19892.0382
N31.41822.46473.77192.11422.74371.02493.99731.02574.4674
N42.46471.41823.77192.74372.11423.99731.02494.46741.0257
H51.09892.12842.11422.74373.10612.97182.43482.42253.5247
H62.12841.09892.74372.11423.10612.43482.97183.52472.4225
H72.03112.59301.02493.99732.97182.43484.45171.65994.5715
H82.59302.03113.99731.02492.43482.97184.45174.57151.6599
H92.03823.19891.02574.46742.42253.52471.65994.57155.0807
H103.19892.03824.46741.02573.52472.42254.57151.65995.0807

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.658 C1 C2 H6 120.203
C1 N3 H7 111.462 C1 N3 H9 112.026
C2 C1 N3 125.658 C2 C1 H5 120.203
C2 N4 H8 111.462 C2 N4 H10 112.026
N3 C1 H5 113.667 N4 C2 H6 113.667
H7 N3 H9 108.088 H8 N4 H10 108.088
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 -0.029      
2 C -0.029      
3 N -0.708      
4 N -0.708      
5 H 0.122      
6 H 0.122      
7 H 0.307      
8 H 0.307      
9 H 0.308      
10 H 0.308      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 2.324 2.324
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.490 -1.974 0.000
y -1.974 -22.208 0.000
z 0.000 0.000 -27.846
Traceless
 xyz
x 4.537 -1.974 0.000
y -1.974 1.960 0.000
z 0.000 0.000 -6.497
Polar
3z2-r2-12.995
x2-y21.718
xy-1.974
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.298 -0.008 0.000
y -0.008 8.923 0.000
z 0.000 0.000 2.730


<r2> (average value of r2) Å2
<r2> 98.532
(<r2>)1/2 9.926