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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: MP3=FULL/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP3=FULL/3-21G
 hartrees
Energy at 0K-147.361973
Energy at 298.15K-147.364327
HF Energy-147.053133
Nuclear repulsion energy59.788575
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 MP3=FULL/3-21G
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 3577 3577 14.31      
2 A 1294 1294 0.18      
3 A 880 880 11.63      
4 A 813 813 136.90      
5 A 500 500 1.05      
6 B 3579 3579 103.86      
7 B 2274 2274 450.79      
8 B 879 879 722.76      
9 B 505 505 76.37      

Unscaled Zero Point Vibrational Energy (zpe) 7151.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7151.0 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 MP3=FULL/3-21G
ABC
14.05999 0.34110 0.34095

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/3-21G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.025
N2 0.000 1.223 -0.077
N3 0.000 -1.223 -0.077
H4 0.594 1.844 0.465
H5 -0.594 -1.844 0.465

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22711.22711.98661.9866
N21.22712.44571.01613.1705
N31.22712.44573.17051.0161
H41.98661.01613.17053.8746
H51.98663.17051.01613.8746

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 124.397 C1 N3 H5 124.397
N2 C1 N3 170.481
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability