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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: HF/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 HF/6-31G*
 hartrees
Energy at 0K-188.082088
Energy at 298.15K 
HF Energy-188.082088
Nuclear repulsion energy118.321426
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 HF/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 3834 3444 1.14 112.54 0.73 0.85
2 A 3739 3359 4.29 224.72 0.05 0.09
3 A 3339 3000 0.07 145.24 0.31 0.47
4 A 1940 1743 0.00 53.79 0.21 0.35
5 A 1818 1634 32.34 7.85 0.75 0.86
6 A 1464 1315 0.78 18.50 0.39 0.56
7 A 1392 1251 0.04 18.59 0.63 0.78
8 A 1127 1013 0.12 9.24 0.45 0.62
9 A 1066 957 66.69 0.41 0.58 0.73
10 A 922 828 172.79 5.07 0.32 0.49
11 A 594 534 1.23 7.38 0.35 0.52
12 A 332 298 0.53 4.42 0.61 0.76
13 A 262 235 21.66 2.11 0.75 0.86
14 B 3833 3444 4.13 38.16 0.75 0.86
15 B 3738 3359 0.65 61.68 0.75 0.86
16 B 3340 3001 59.78 0.06 0.75 0.86
17 B 1830 1644 60.81 7.09 0.75 0.86
18 B 1525 1371 8.13 0.95 0.75 0.86
19 B 1247 1121 96.42 0.56 0.75 0.86
20 B 1233 1108 0.22 1.24 0.75 0.86
21 B 947 851 162.02 20.86 0.75 0.86
22 B 844 759 312.97 0.02 0.75 0.86
23 B 355 319 26.49 0.34 0.75 0.86
24 B 243 218 137.83 0.14 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 20481.2 cm-1
Scaled (by 0.8985) Zero Point Vibrational Energy (zpe) 18402.3 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 HF/6-31G*
ABC
1.47268 0.13362 0.12440

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.310 0.583 0.017
C2 -0.310 -0.583 0.017
N3 -0.310 1.847 -0.095
N4 0.310 -1.847 -0.095
H5 1.387 0.627 0.017
H6 -1.387 -0.627 0.017
H7 -1.308 1.784 -0.082
H8 1.308 -1.784 -0.082
H9 -0.018 2.474 0.628
H10 0.018 -2.474 0.628

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.31971.41242.43161.07792.08402.01822.57072.01493.1310
C21.31972.43161.41242.08401.07792.57072.01823.13102.0149
N31.41242.43163.74482.09292.70021.00033.97531.00094.3931
N42.43161.41243.74482.70022.09293.97531.00034.39311.0009
H51.07792.08402.09292.70023.04442.93502.41472.39993.4446
H62.08401.07792.70022.09293.04442.41472.93503.44462.3999
H72.01822.57071.00033.97532.93502.41474.42521.62654.5166
H82.57072.01823.97531.00032.41472.93504.42524.51661.6265
H92.01493.13101.00094.39312.39993.44461.62654.51664.9487
H103.13102.01494.39311.00093.44462.39994.51661.62654.9487

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.717 C1 C2 H6 120.388
C1 N3 H7 112.429 C1 N3 H9 112.097
C2 C1 N3 125.717 C2 C1 H5 120.388
C2 N4 H8 112.429 C2 N4 H10 112.097
N3 C1 H5 113.690 N4 C2 H6 113.690
H7 N3 H9 108.736 H8 N4 H10 108.736
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.010      
2 C -0.010      
3 N -0.855      
4 N -0.855      
5 H 0.172      
6 H 0.172      
7 H 0.347      
8 H 0.347      
9 H 0.345      
10 H 0.345      


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 2.568 2.568
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.325 -1.786 0.000
y -1.786 -24.507 0.000
z 0.000 0.000 -27.722
Traceless
 xyz
x 5.789 -1.786 0.000
y -1.786 -0.483 0.000
z 0.000 0.000 -5.306
Polar
3z2-r2-10.611
x2-y24.181
xy-1.786
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.812 0.371 0.000
y 0.371 7.541 0.000
z 0.000 0.000 2.581


<r2> (average value of r2) Å2
<r2> 97.015
(<r2>)1/2 9.850