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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-188.011295
Energy at 298.15K 
HF Energy-188.011295
Nuclear repulsion energy118.269361
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 3966 3581 9.05 106.66 0.70 0.82
2 A 3839 3466 1.80 227.50 0.09 0.17
3 A 3337 3013 0.19 155.73 0.30 0.46
4 A 1925 1738 1.43 65.34 0.22 0.36
5 A 1835 1657 9.28 11.32 0.71 0.83
6 A 1482 1338 1.40 27.00 0.43 0.60
7 A 1376 1243 0.92 7.58 0.73 0.85
8 A 1097 991 6.41 6.72 0.35 0.52
9 A 1066 962 85.35 0.67 0.32 0.48
10 A 614 554 28.72 9.51 0.28 0.43
11 A 485 438 540.37 3.12 0.03 0.07
12 A 338 306 57.22 3.51 0.75 0.86
13 A 239 216 27.82 4.08 0.73 0.85
14 B 3966 3581 23.68 34.42 0.75 0.86
15 B 3838 3465 25.31 34.58 0.75 0.86
16 B 3339 3015 65.42 0.27 0.75 0.86
17 B 1839 1661 119.16 2.26 0.75 0.86
18 B 1523 1375 6.15 0.62 0.75 0.86
19 B 1264 1141 192.67 0.32 0.75 0.86
20 B 1206 1089 12.43 3.07 0.75 0.86
21 B 952 860 28.77 22.81 0.75 0.86
22 B 432 390 265.91 4.23 0.75 0.86
23 B 344 311 3.94 0.88 0.75 0.86
24 B 73 66 226.89 0.53 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 20186.7 cm-1
Scaled (by 0.9029) Zero Point Vibrational Energy (zpe) 18226.6 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
1.51083 0.13307 0.12363

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 0.313 0.584 0.035
C2 -0.313 -0.584 0.035
N3 -0.313 1.836 -0.063
N4 0.313 -1.836 -0.063
H5 1.388 0.625 0.047
H6 -1.388 -0.625 0.047
H7 -1.279 1.880 -0.282
H8 1.279 -1.880 -0.282
H9 0.045 2.592 0.468
H10 -0.045 -2.592 0.468

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.32581.40322.42241.07552.08722.07722.66582.07193.2261
C21.32582.42241.40322.08721.07552.66582.07723.22612.0719
N31.40322.42243.72532.09082.68810.99154.04890.99114.4684
N42.42241.40323.72532.68812.09084.04890.99154.46840.9911
H51.07552.08722.09082.68813.04432.96572.52942.41863.5473
H62.08721.07552.68812.09083.04432.52942.96573.54732.4186
H72.07722.66580.99154.04892.96572.52944.54791.68044.7000
H82.66582.07724.04890.99152.52942.96574.54794.70001.6804
H92.07193.22610.99114.46842.41863.54731.68044.70005.1856
H103.22612.07194.46840.99113.54732.41864.70001.68045.1856

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.133 C1 C2 H6 120.376
C1 N3 H7 119.324 C1 N3 H9 118.834
C2 C1 N3 125.133 C2 C1 H5 120.376
C2 N4 H8 119.324 C2 N4 H10 118.834
N3 C1 H5 114.378 N4 C2 H6 114.378
H7 N3 H9 115.894 H8 N4 H10 115.894
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 0.071      
2 C 0.071      
3 N -0.923      
4 N -0.923      
5 H 0.167      
6 H 0.167      
7 H 0.345      
8 H 0.345      
9 H 0.339      
10 H 0.339      


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 1.535 1.535
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.472 -1.838 0.000
y -1.838 -20.817 0.000
z 0.000 0.000 -28.498
Traceless
 xyz
x 4.186 -1.838 0.000
y -1.838 3.668 0.000
z 0.000 0.000 -7.854
Polar
3z2-r2-15.707
x2-y20.346
xy-1.838
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.571 0.489 0.000
y 0.489 7.552 0.000
z 0.000 0.000 2.058


<r2> (average value of r2) Å2
<r2> 97.469
(<r2>)1/2 9.873