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 H2NCHCHNH2 (diaminoethylene)

using model chemistry: wB97X-D/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at wB97X-D/STO-3G
 hartrees
Energy at 0K-186.828867
Energy at 298.15K 
HF Energy-186.828867
Nuclear repulsion energy115.264376
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 wB97X-D/STO-3G
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 3779 3779 0.22      
2 A 3584 3584 6.65      
3 A 3496 3496 0.04      
4 A 1934 1934 0.04      
5 A 1828 1828 15.51      
6 A 1432 1432 1.51      
7 A 1390 1390 0.47      
8 A 1113 1113 1.95      
9 A 1038 1038 37.27      
10 A 894 894 69.20      
11 A 559 559 0.15      
12 A 323 323 0.34      
13 A 263 263 8.28      
14 B 3778 3778 5.46      
15 B 3581 3581 0.65      
16 B 3485 3485 30.35      
17 B 1833 1833 7.99      
18 B 1503 1503 10.70      
19 B 1283 1283 18.63      
20 B 1213 1213 0.31      
21 B 836 836 171.11      
22 B 808 808 288.96      
23 B 356 356 55.74      
24 B 281 281 51.17      

Unscaled Zero Point Vibrational Energy (zpe) 20294.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 20294.2 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 wB97X-D/STO-3G
ABC
1.36779 0.12834 0.11922

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/STO-3G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.324 0.588 0.019
C2 -0.324 -0.588 0.019
N3 -0.324 1.887 -0.123
N4 0.324 -1.887 -0.123
H5 1.420 0.635 0.010
H6 -1.420 -0.635 0.010
H7 -1.334 1.782 0.149
H8 1.334 -1.782 0.149
H9 0.091 2.544 0.588
H10 -0.091 -2.544 0.588

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.34261.45842.47921.09732.12972.04752.58012.04963.2097
C21.34262.47921.45842.12971.09732.58012.04753.20972.0496
N31.45842.47923.82922.15102.75291.05204.03581.05304.4933
N42.47921.45843.82922.75292.15104.03581.05204.49331.0530
H51.09732.12972.15102.75293.11072.98712.42242.39653.5661
H62.12971.09732.75292.15103.11072.42242.98713.56612.3965
H72.04752.58011.05204.03582.98712.42244.45291.67454.5223
H82.58012.04754.03581.05202.42242.98714.45294.52231.6745
H92.04963.20971.05304.49332.39653.56611.67454.52235.0904
H103.20972.04964.49331.05303.56612.39654.52231.67455.0904

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 124.487 C1 C2 H6 121.259
C1 N3 H7 108.204 C1 N3 H9 108.315
C2 C1 N3 124.487 C2 C1 H5 121.259
C2 N4 H8 108.204 C2 N4 H10 108.315
N3 C1 H5 113.887 N4 C2 H6 113.887
H7 N3 H9 105.395 H8 N4 H10 105.395
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.043      
2 C -0.043      
3 N -0.367      
4 N -0.367      
5 H 0.071      
6 H 0.071      
7 H 0.169      
8 H 0.169      
9 H 0.170      
10 H 0.170      


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 2.879 2.879
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.721 -0.833 0.000
y -0.833 -22.600 0.000
z 0.000 0.000 -24.948
Traceless
 xyz
x 4.053 -0.833 0.000
y -0.833 -0.266 0.000
z 0.000 0.000 -3.788
Polar
3z2-r2-7.575
x2-y22.879
xy-0.833
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.184 0.113 0.000
y 0.113 5.952 0.000
z 0.000 0.000 0.909


<r2> (average value of r2) Å2
<r2> 99.394
(<r2>)1/2 9.970