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(T)/daug-cc-pVDZ

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(T)/daug-cc-pVDZ
 hartrees
Energy at 0K-188.832316
Energy at 298.15K 
HF Energy-188.121031
Nuclear repulsion energy116.210090
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(T)/daug-cc-pVDZ
Rotational Constants (cm-1) from geometry optimized at QCISD(T)/daug-cc-pVDZ
ABC
1.38892 0.12975 0.12061

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/daug-cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.321 0.598 0.036
C2 -0.321 -0.598 0.036
N3 -0.321 1.872 -0.115
N4 0.321 -1.872 -0.115
H5 1.419 0.642 0.037
H6 -1.419 -0.642 0.037
H7 -1.337 1.781 -0.061
H8 1.337 -1.781 -0.061
H9 -0.026 2.525 0.613
H10 0.026 -2.525 0.613

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.35721.43402.47411.09862.13622.03942.58912.04113.1895
C21.35722.47411.43402.13621.09862.58912.03943.18952.0411
N31.43402.47413.79762.13532.74721.02214.01191.02194.4697
N42.47411.43403.79762.74722.13534.01191.02214.46971.0219
H51.09862.13622.13532.74723.11422.98372.42672.44173.5074
H62.13621.09862.74722.13533.11422.42672.98373.50742.4417
H72.03942.58911.02214.01192.98372.42674.45491.65194.5667
H82.58912.03944.01191.02212.42672.98374.45494.56671.6519
H92.04113.18951.02194.46972.44173.50741.65194.56675.0500
H103.18952.04114.46971.02193.50742.44174.56671.65195.0500

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 124.827 C1 C2 H6 120.516
C1 N3 H7 111.162 C1 N3 H9 111.318
C2 C1 N3 124.827 C2 C1 H5 120.516
C2 N4 H8 111.162 C2 N4 H10 111.318
N3 C1 H5 114.297 N4 C2 H6 114.297
H7 N3 H9 107.832 H8 N4 H10 107.832
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability