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: HSEh1PBE/daug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at HSEh1PBE/daug-cc-pVDZ
 hartrees
Energy at 0K-189.120785
Energy at 298.15K 
HF Energy-189.120785
Nuclear repulsion energy117.546020
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 HSEh1PBE/daug-cc-pVDZ
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 3634 3634 2.22      
2 A 3532 3532 0.12      
3 A 3166 3166 0.07      
4 A 1775 1775 0.61      
5 A 1627 1627 18.16      
6 A 1326 1326 0.40      
7 A 1284 1284 0.02      
8 A 1038 1038 0.02      
9 A 931 931 68.00      
10 A 780 780 126.99      
11 A 554 554 2.15      
12 A 326 326 3.45      
13 A 246 246 15.62      
14 B 3633 3633 8.29      
15 B 3530 3530 2.91      
16 B 3170 3170 46.40      
17 B 1635 1635 54.95      
18 B 1382 1382 11.15      
19 B 1195 1195 130.58      
20 B 1118 1118 1.25      
21 B 820 820 57.95      
22 B 723 723 289.31      
23 B 342 342 34.76      
24 B 249 249 96.18      

Unscaled Zero Point Vibrational Energy (zpe) 19007.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 19007.3 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 HSEh1PBE/daug-cc-pVDZ
ABC
1.43916 0.13265 0.12323

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/daug-cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.313 0.593 0.036
C2 -0.313 -0.593 0.036
N3 -0.313 1.848 -0.109
N4 0.313 -1.848 -0.109
H5 1.405 0.636 0.038
H6 -1.405 -0.636 0.038
H7 -1.324 1.788 -0.054
H8 1.324 -1.788 -0.054
H9 0.014 2.530 0.566
H10 -0.014 -2.530 0.566

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.34041.40962.44471.09332.11212.02822.58772.03063.1844
C21.34042.44471.40962.11211.09332.58772.02823.18442.0306
N31.40962.44473.74792.10742.71721.01443.98691.01444.4395
N42.44471.40963.74792.71722.10743.98691.01444.43951.0144
H51.09332.11212.10742.71723.08482.96352.42652.40863.5096
H62.11211.09332.71722.10743.08482.42652.96353.50962.4086
H72.02822.58771.01443.98692.96352.42654.44871.65144.5542
H82.58772.02823.98691.01442.42652.96354.44874.55421.6514
H92.03063.18441.01444.43952.40863.50961.65144.55425.0601
H103.18442.03064.43951.01443.50962.40864.55421.65145.0601

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.475 C1 C2 H6 120.074
C1 N3 H7 112.575 C1 N3 H9 112.781
C2 C1 N3 125.475 C2 C1 H5 120.074
C2 N4 H8 112.575 C2 N4 H10 112.781
N3 C1 H5 114.108 N4 C2 H6 114.108
H7 N3 H9 108.971 H8 N4 H10 108.971
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.473      
2 C 0.473      
3 N 0.328      
4 N 0.328      
5 H -0.761      
6 H -0.761      
7 H -0.061      
8 H -0.061      
9 H 0.020      
10 H 0.020      


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 2.012 2.012
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.031 -1.398 0.000
y -1.398 -23.388 0.000
z 0.000 0.000 -28.861
Traceless
 xyz
x 5.094 -1.398 0.000
y -1.398 1.557 0.000
z 0.000 0.000 -6.651
Polar
3z2-r2-13.303
x2-y22.358
xy-1.398
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.408 -0.032 0.000
y -0.032 10.269 0.000
z 0.000 0.000 5.339


<r2> (average value of r2) Å2
<r2> 98.098
(<r2>)1/2 9.904