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/aug-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 wB97X-D/aug-cc-pVDZ
 hartrees
Energy at 0K-189.264434
Energy at 298.15K 
HF Energy-189.264434
Nuclear repulsion energy117.423418
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/aug-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 3649 3493 2.79      
2 A 3550 3398 0.34      
3 A 3178 3042 0.06      
4 A 1787 1711 0.55      
5 A 1633 1563 18.94      
6 A 1334 1277 0.45      
7 A 1284 1230 0.00      
8 A 1043 999 0.05      
9 A 933 893 71.76      
10 A 781 747 130.69      
11 A 560 536 2.01      
12 A 326 312 3.80      
13 A 244 233 15.11      
14 B 3649 3493 9.18      
15 B 3548 3397 5.14      
16 B 3180 3044 46.37      
17 B 1642 1572 58.39      
18 B 1385 1326 8.86      
19 B 1191 1140 136.55      
20 B 1124 1076 1.56      
21 B 827 792 60.32      
22 B 723 692 289.95      
23 B 344 330 24.76      
24 B 250 239 108.71      

Unscaled Zero Point Vibrational Energy (zpe) 19081.2 cm-1
Scaled (by 0.9573) Zero Point Vibrational Energy (zpe) 18266.4 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/aug-cc-pVDZ
ABC
1.43736 0.13234 0.12293

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/aug-cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.314 0.591 0.032
C2 -0.314 -0.591 0.032
N3 -0.314 1.851 -0.106
N4 0.314 -1.851 -0.106
H5 1.406 0.636 0.032
H6 -1.406 -0.636 0.032
H7 -1.325 1.792 -0.053
H8 1.325 -1.792 -0.053
H9 0.016 2.528 0.573
H10 -0.016 -2.528 0.573

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.33801.41432.44561.09352.11252.03362.59022.03293.1824
C21.33802.44561.41432.11251.09352.59022.03363.18242.0329
N31.41432.44563.75452.11042.71951.01433.99501.01424.4408
N42.44561.41433.75452.71952.11043.99501.01434.44081.0142
H51.09352.11252.11042.71953.08652.96722.43082.40923.5106
H62.11251.09352.71952.11043.08652.43082.96723.51062.4092
H72.03362.59021.01433.99502.96722.43084.45771.65284.5570
H82.59022.03363.99501.01432.43082.96724.45774.55701.6528
H92.03293.18241.01424.44082.40923.51061.65284.55705.0553
H103.18242.03294.44081.01423.51062.40924.55701.65285.0553

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.371 C1 C2 H6 120.314
C1 N3 H7 112.686 C1 N3 H9 112.636
C2 C1 N3 125.371 C2 C1 H5 120.314
C2 N4 H8 112.686 C2 N4 H10 112.636
N3 C1 H5 113.998 N4 C2 H6 113.998
H7 N3 H9 109.127 H8 N4 H10 109.127
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.818      
2 C 0.818      
3 N -0.240      
4 N -0.240      
5 H -0.503      
6 H -0.503      
7 H -0.042      
8 H -0.042      
9 H -0.032      
10 H -0.032      


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 2.072 2.072
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.855 -1.389 0.000
y -1.389 -23.534 0.000
z 0.000 0.000 -28.788
Traceless
 xyz
x 5.307 -1.389 0.000
y -1.389 1.287 0.000
z 0.000 0.000 -6.594
Polar
3z2-r2-13.188
x2-y22.679
xy-1.389
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.266 0.083 0.000
y 0.083 9.945 0.000
z 0.000 0.000 5.263


<r2> (average value of r2) Å2
<r2> 98.254
(<r2>)1/2 9.912