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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: HF/CEP-121G*

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/CEP-121G*
 hartrees
Energy at 0K-33.796727
Energy at 298.15K 
HF Energy-33.796727
Nuclear repulsion energy66.890079
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/CEP-121G*
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 3819 3450 0.60 106.14 0.74 0.85
2 A 3727 3367 1.46 226.55 0.05 0.09
3 A 3319 2998 0.00 156.59 0.32 0.49
4 A 1895 1712 0.40 59.09 0.16 0.28
5 A 1812 1637 37.96 14.50 0.44 0.61
6 A 1439 1300 0.59 19.43 0.36 0.53
7 A 1376 1243 0.01 22.72 0.58 0.73
8 A 1113 1006 0.05 11.24 0.27 0.43
9 A 1046 945 95.88 0.62 0.50 0.66
10 A 943 852 129.26 1.36 0.25 0.40
11 A 581 525 1.14 8.27 0.30 0.46
12 A 320 289 2.78 3.33 0.42 0.59
13 A 255 231 19.60 1.10 0.75 0.86
14 B 3819 3450 1.34 35.97 0.75 0.86
15 B 3727 3367 0.25 60.40 0.75 0.86
16 B 3321 3000 67.64 0.11 0.75 0.86
17 B 1830 1653 68.35 4.58 0.75 0.86
18 B 1507 1362 7.40 0.48 0.75 0.86
19 B 1224 1106 55.37 0.69 0.75 0.86
20 B 1216 1099 51.90 0.90 0.75 0.86
21 B 945 854 274.40 18.03 0.75 0.86
22 B 856 773 179.84 4.01 0.75 0.86
23 B 347 313 24.13 0.28 0.75 0.86
24 B 234 211 140.04 0.09 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 20336.5 cm-1
Scaled (by 0.9034) Zero Point Vibrational Energy (zpe) 18372.0 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 HF/CEP-121G*
ABC
1.45059 0.13203 0.12299

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.313 0.585 0.019
C2 -0.313 -0.585 0.019
N3 -0.313 1.860 -0.099
N4 0.313 -1.860 -0.099
H5 1.393 0.629 0.018
H6 -1.393 -0.629 0.018
H7 -1.312 1.783 -0.089
H8 1.312 -1.783 -0.089
H9 -0.035 2.471 0.646
H10 0.035 -2.471 0.646

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.32761.42492.44771.08052.09392.02202.57262.01733.1320
C21.32762.44771.42492.09391.08052.57262.02203.13202.0173
N31.42492.44773.77172.10702.71491.00223.98891.00294.4077
N42.44771.42493.77172.71492.10703.98891.00224.40771.0029
H51.08052.09392.10702.71493.05632.94312.41532.41403.4416
H62.09391.08052.71492.10703.05632.41532.94313.44162.4140
H72.02202.57261.00223.98892.94312.41534.42771.62634.5220
H82.57262.02203.98891.00222.41532.94314.42774.52201.6263
H92.01733.13201.00294.40772.41403.44161.62634.52204.9417
H103.13202.01734.40771.00293.44162.41404.52201.62634.9417

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.530 C1 C2 H6 120.455
C1 N3 H7 111.654 C1 N3 H9 111.196
C2 C1 N3 125.530 C2 C1 H5 120.455
C2 N4 H8 111.654 C2 N4 H10 111.196
N3 C1 H5 113.779 N4 C2 H6 113.779
H7 N3 H9 108.401 H8 N4 H10 108.401
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.117      
2 C -0.117      
3 N -0.710      
4 N -0.710      
5 H 0.170      
6 H 0.170      
7 H 0.328      
8 H 0.328      
9 H 0.329      
10 H 0.329      


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 2.535 2.535
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.327 -1.851 0.000
y -1.851 -24.963 0.000
z 0.000 0.000 -28.319
Traceless
 xyz
x 6.314 -1.851 0.000
y -1.851 -0.640 0.000
z 0.000 0.000 -5.674
Polar
3z2-r2-11.348
x2-y24.636
xy-1.851
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.176 0.495 0.000
y 0.495 7.990 0.000
z 0.000 0.000 3.614


<r2> (average value of r2) Å2
<r2> 82.050
(<r2>)1/2 9.058