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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: MP4/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP4/TZVP
 hartrees
Energy at 0K-148.463320
Energy at 298.15K-148.465661
HF Energy-147.945497
Nuclear repulsion energy59.678781
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 MP4/TZVP
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 3596 3462        
2 A 1223 1178        
3 A 893 860        
4 A 740 713        
5 A 508 489        
6 B 3597 3463        
7 B 2171 2091        
8 B 880 847        
9 B 509 490        

Unscaled Zero Point Vibrational Energy (zpe) 7057.8 cm-1
Scaled (by 0.9629) Zero Point Vibrational Energy (zpe) 6796.0 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 MP4/TZVP
ABC
11.90742 0.34178 0.34164

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/TZVP

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.031
N2 0.000 1.229 -0.086
N3 0.000 -1.229 -0.086
H4 0.631 1.754 0.510
H5 -0.631 -1.754 0.510

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.23481.23481.92431.9243
N21.23482.45861.01383.1067
N31.23482.45863.10671.0138
H41.92431.01383.10673.7275
H51.92433.10671.01383.7275

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 117.351 C1 N3 H5 117.351
N2 C1 N3 169.138
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability