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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: CCSD(T)=FULL/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 CCSD(T)=FULL/TZVP
 hartrees
Energy at 0K-148.511223
Energy at 298.15K-148.513590
HF Energy-147.946800
Nuclear repulsion energy59.916575
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 CCSD(T)=FULL/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 3595 3437        
2 A 1254 1199        
3 A 904 865        
4 A 770 736        
5 A 513 490        
6 B 3596 3438        
7 B 2193 2097        
8 B 894 855        
9 B 512 489        

Unscaled Zero Point Vibrational Energy (zpe) 7115.6 cm-1
Scaled (by 0.956) Zero Point Vibrational Energy (zpe) 6802.5 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 CCSD(T)=FULL/TZVP
ABC
11.83487 0.34472 0.34468

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/TZVP

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.022
N2 0.000 1.225 -0.083
N3 0.000 -1.225 -0.083
H4 0.635 1.737 0.517
H5 -0.635 -1.737 0.517

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22931.22931.91441.9144
N21.22932.44951.01323.0878
N31.22932.44953.08781.0132
H41.91441.01323.08783.6985
H51.91443.08781.01323.6985

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 116.898 C1 N3 H5 116.898
N2 C1 N3 170.124
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability