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: QCISD/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at QCISD/aug-cc-pVTZ
 hartrees
Energy at 0K-188.965367
Energy at 298.15K 
HF Energy-188.167932
Nuclear repulsion energy117.590880
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 QCISD/aug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at QCISD/aug-cc-pVTZ
ABC
1.43765 0.13261 0.12326

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/aug-cc-pVTZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.315 0.588 0.028
C2 -0.315 -0.588 0.028
N3 -0.315 1.852 -0.106
N4 0.315 -1.852 -0.106
H5 1.399 0.629 0.028
H6 -1.399 -0.629 0.028
H7 -1.322 1.778 -0.051
H8 1.322 -1.778 -0.051
H9 -0.002 2.505 0.598
H10 0.002 -2.505 0.598

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.33461.41832.44331.08462.10252.02542.57262.02503.1610
C21.33462.44331.41832.10251.08462.57262.02543.16102.0250
N31.41832.44333.75632.10972.71041.01093.98201.01064.4247
N42.44331.41833.75632.71042.10973.98201.01094.42471.0106
H51.08462.10252.10972.71043.06802.95462.40972.40993.4788
H62.10251.08462.71042.10973.06802.40972.95463.47882.4099
H72.02542.57261.01093.98202.95462.40974.43111.64114.5300
H82.57262.02543.98201.01092.40972.95464.43114.53001.6411
H92.02503.16101.01064.42472.40993.47881.64114.53005.0107
H103.16102.02504.42471.01063.47882.40994.53001.64115.0107

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.108 C1 C2 H6 120.356
C1 N3 H7 111.886 C1 N3 H9 111.868
C2 C1 N3 125.108 C2 C1 H5 120.356
C2 N4 H8 111.886 C2 N4 H10 111.868
N3 C1 H5 114.235 N4 C2 H6 114.235
H7 N3 H9 108.554 H8 N4 H10 108.554
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability