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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at CBS-Q
 hartrees
Energy at 0K-188.959949
Energy at 298.15K-188.953792
HF Energy-188.080353
Nuclear repulsion energy118.244339
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 CBS-Q
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 3845 3845 1.05 112.36 0.73 0.85
2 A 3751 3751 3.51 225.35 0.05 0.09
3 A 3324 3324 0.07 145.46 0.31 0.47
4 A 1938 1938 0.01 55.33 0.20 0.34
5 A 1825 1825 31.87 8.32 0.75 0.85
6 A 1454 1454 0.76 17.63 0.38 0.55
7 A 1389 1389 0.00 19.85 0.63 0.77
8 A 1122 1122 0.05 8.79 0.44 0.61
9 A 1059 1059 61.16 0.37 0.58 0.73
10 A 914 914 181.12 5.20 0.30 0.46
11 A 591 591 1.53 7.22 0.35 0.52
12 A 335 335 0.36 4.72 0.62 0.77
13 A 266 266 22.52 1.97 0.75 0.86
14 B 3844 3844 3.62 37.96 0.75 0.86
15 B 3750 3750 0.52 61.17 0.75 0.86
16 B 3324 3324 58.60 0.06 0.75 0.86
17 B 1837 1837 59.22 7.17 0.75 0.86
18 B 1517 1517 8.07 0.97 0.75 0.86
19 B 1243 1243 101.63 0.53 0.75 0.86
20 B 1227 1227 0.32 1.11 0.75 0.86
21 B 937 937 161.69 19.32 0.75 0.86
22 B 836 836 313.52 0.02 0.75 0.86
23 B 356 356 29.97 0.30 0.75 0.86
24 B 247 247 137.54 0.12 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 20465.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 20465.0 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 CBS-Q
ABC
1.41841 0.13168 0.12244

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.310 0.584 0.019
C2 -0.310 -0.584 0.019
N3 -0.310 1.848 -0.095
N4 0.310 -1.848 -0.095
H5 1.390 0.629 0.020
H6 -1.390 -0.629 0.020
H7 -1.307 1.788 -0.091
H8 1.307 -1.788 -0.091
H9 -0.017 2.480 0.622
H10 0.017 -2.480 0.622

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.32201.41252.43441.08082.08812.01882.57492.01623.1360
C21.32202.43441.41252.08811.08082.57492.01883.13602.0162
N31.41252.43443.74752.09492.70450.99863.97900.99914.3987
N42.43441.41253.74752.70452.09493.97900.99864.39870.9991
H51.08082.08812.09492.70453.05112.93722.42082.40163.4511
H62.08811.08082.70452.09493.05112.42082.93723.45112.4016
H72.01882.57490.99863.97902.93722.42084.42901.62794.5247
H82.57492.01883.97900.99862.42082.93724.42904.52471.6279
H92.01623.13600.99914.39872.40163.45111.62794.52474.9594
H103.13602.01624.39870.99913.45112.40164.52471.62794.9594

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.773 C1 C2 H6 120.361
C1 N3 H7 112.579 C1 N3 H9 112.310
C2 C1 N3 125.773 C2 C1 H5 120.361
C2 N4 H8 112.579 C2 N4 H10 112.310
N3 C1 H5 113.655 N4 C2 H6 113.655
H7 N3 H9 109.152 H8 N4 H10 109.152
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability