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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: MP4=FULL/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 MP4=FULL/cc-pVDZ
 hartrees
Energy at 0K-148.405774
Energy at 298.15K-148.408141
HF Energy-147.908613
Nuclear repulsion energy59.126712
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=FULL/cc-pVDZ
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 3570 3446        
2 A 1214 1171        
3 A 965 931        
4 A 762 735        
5 A 496 479        
6 B 3573 3448        
7 B 2168 2093        
8 B 954 920        
9 B 503 485        

Unscaled Zero Point Vibrational Energy (zpe) 7101.7 cm-1
Scaled (by 0.9651) Zero Point Vibrational Energy (zpe) 6853.8 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=FULL/cc-pVDZ
ABC
11.15076 0.33613 0.33598

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.028
N2 0.000 1.242 -0.088
N3 0.000 -1.242 -0.088
H4 0.650 1.735 0.531
H5 -0.650 -1.735 0.531

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.24781.24781.92021.9202
N21.24782.48491.02393.1101
N31.24782.48493.11011.0239
H41.92021.02393.11013.7060
H51.92023.11011.02393.7060

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 115.053 C1 N3 H5 115.053
N2 C1 N3 169.386
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability