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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: QCISD(T)=FULL/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at QCISD(T)=FULL/6-31+G**
 hartrees
Energy at 0K-148.414017
Energy at 298.15K-148.416382
HF Energy-147.906024
Nuclear repulsion energy59.508479
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 QCISD(T)=FULL/6-31+G**
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 3642 3642        
2 A 1248 1248        
3 A 937 937        
4 A 769 769        
5 A 513 513        
6 B 3642 3642        
7 B 2180 2180        
8 B 929 929        
9 B 500 500        

Unscaled Zero Point Vibrational Energy (zpe) 7180.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7180.3 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 QCISD(T)=FULL/6-31+G**
ABC
11.90887 0.33962 0.33944

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/6-31+G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.033
N2 0.000 1.233 -0.087
N3 0.000 -1.233 -0.087
H4 0.629 1.759 0.509
H5 -0.629 -1.759 0.509

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.23911.23911.92811.9281
N21.23912.46661.01353.1155
N31.23912.46663.11551.0135
H41.92811.01353.11553.7370
H51.92813.11551.01353.7370

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 117.381 C1 N3 H5 117.381
N2 C1 N3 168.920
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability