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All results from a given calculation for HN=C=C(CN)2 (Dicyanoketenimine)

using model chemistry: QCISD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/3-21G*
 hartrees
Energy at 0K-314.258624
Energy at 298.15K 
HF Energy-313.550550
Nuclear repulsion energy210.245572
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/3-21G*
Rotational Constants (cm-1) from geometry optimized at QCISD/3-21G*
ABC
0.09312 0.09117 0.04621

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.001 -0.047 0.000
C2 -0.001 1.297 0.000
N3 0.098 2.506 0.000
C4 -0.001 -0.769 1.245
C5 -0.001 -0.769 -1.245
N6 -0.001 -1.359 2.262
N7 -0.001 -1.359 -2.262
H8 -0.649 3.208 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 C4 C5 N6 N7 H8
C11.34412.55561.43911.43912.61472.61473.3188
C21.34411.21352.41192.41193.48853.48852.0176
N32.55561.21353.50523.50524.47964.47961.0244
C41.43912.41193.50522.49041.17563.55634.2168
C51.43912.41193.50522.49043.55631.17564.2168
N62.61473.48854.47961.17563.55634.52365.1371
N72.61473.48854.47963.55631.17564.52365.1371
H83.31882.01761.02444.21684.21685.13715.1371

picture of Dicyanoketenimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 175.333 C1 C4 N6 179.944
C1 C5 N7 179.944 C2 C1 C4 120.087
C2 C1 C5 120.087 C2 N3 H8 128.531
C4 C1 C5 119.826
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability