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/TZVP

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/TZVP
 hartrees
Energy at 0K-189.156525
Energy at 298.15K 
HF Energy-189.156525
Nuclear repulsion energy117.964153
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/TZVP
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 3647 3501 2.27      
2 A 3548 3406 1.90      
3 A 3156 3030 0.05      
4 A 1773 1702 1.26      
5 A 1652 1586 24.09      
6 A 1340 1287 0.35      
7 A 1290 1238 0.08      
8 A 1042 1000 0.14      
9 A 936 899 72.87      
10 A 777 746 170.46      
11 A 559 536 2.76      
12 A 333 319 3.56      
13 A 249 239 19.39      
14 B 3646 3501 6.51      
15 B 3546 3405 3.17      
16 B 3160 3034 48.28      
17 B 1659 1593 66.87      
18 B 1396 1341 7.99      
19 B 1194 1146 126.70      
20 B 1130 1085 1.28      
21 B 818 786 53.93      
22 B 717 689 349.69      
23 B 345 331 36.73      
24 B 247 237 113.90      

Unscaled Zero Point Vibrational Energy (zpe) 19079.2 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 18318.0 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/TZVP
ABC
1.45494 0.13345 0.12403

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/TZVP

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.311 0.590 0.040
C2 -0.311 -0.590 0.040
N3 -0.311 1.841 -0.108
N4 0.311 -1.841 -0.108
H5 1.398 0.632 0.042
H6 -1.398 -0.632 0.042
H7 -1.319 1.789 -0.084
H8 1.319 -1.789 -0.084
H9 0.012 2.528 0.559
H10 -0.012 -2.528 0.559

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.33311.40522.43561.08792.10042.02742.58672.02923.1774
C21.33312.43561.40522.10041.08792.58672.02743.17742.0292
N31.40522.43563.73492.09842.70621.01033.97961.01054.4305
N42.43561.40523.73492.70622.09843.97961.01034.43051.0105
H51.08792.10042.09842.70623.06812.95572.42582.40503.4989
H62.10041.08792.70622.09843.06812.42582.95573.49892.4050
H72.02742.58671.01033.97962.95572.42584.44581.65284.5567
H82.58672.02743.97961.01032.42582.95574.44584.55671.6528
H92.02923.17741.01054.43052.40503.49891.65284.55675.0567
H103.17742.02924.43051.01053.49892.40504.55671.65285.0567

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.597 C1 C2 H6 120.016
C1 N3 H7 113.123 C1 N3 H9 113.271
C2 C1 N3 125.597 C2 C1 H5 120.016
C2 N4 H8 113.123 C2 N4 H10 113.271
N3 C1 H5 114.031 N4 C2 H6 114.031
H7 N3 H9 109.748 H8 N4 H10 109.748
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.126      
2 C -0.126      
3 N -0.395      
4 N -0.395      
5 H 0.105      
6 H 0.105      
7 H 0.202      
8 H 0.202      
9 H 0.214      
10 H 0.214      


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 2.111 2.111
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.618 -1.717 0.000
y -1.717 -22.642 0.000
z 0.000 0.000 -28.780
Traceless
 xyz
x 5.093 -1.717 0.000
y -1.717 2.057 0.000
z 0.000 0.000 -7.150
Polar
3z2-r2-14.299
x2-y22.024
xy-1.717
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.612 0.203 0.000
y 0.203 9.172 0.000
z 0.000 0.000 4.186


<r2> (average value of r2) Å2
<r2> 97.352
(<r2>)1/2 9.867