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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: MP2/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP2/6-31G*
 hartrees
Energy at 0K-148.338643
Energy at 298.15K-148.340999
HF Energy-147.891445
Nuclear repulsion energy59.556194
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 MP2/6-31G*
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 3625 3419 25.55      
2 A 1267 1195 0.00      
3 A 921 868 10.73      
4 A 748 705 115.33      
5 A 517 487 0.18      
6 B 3626 3420 129.92      
7 B 2244 2116 455.04      
8 B 910 858 521.34      
9 B 517 488 84.35      

Unscaled Zero Point Vibrational Energy (zpe) 7187.5 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 6777.9 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 MP2/6-31G*
ABC
12.32045 0.33982 0.33977

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.031
N2 0.000 1.228 -0.078
N3 0.000 -1.228 -0.078
H4 0.661 1.786 0.453
H5 -0.661 -1.786 0.453

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.23261.23261.95091.9509
N21.23262.45561.01493.1310
N31.23262.45563.13101.0149
H41.95091.01493.13103.8094
H51.95093.13101.01493.8094

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 120.152 C1 N3 H5 120.152
N2 C1 N3 169.900
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability