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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: CCSD(T)=FULL/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-148.614592
Energy at 298.15K-148.616999
HF Energy-147.956559
Nuclear repulsion energy60.039491
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/6-311+G(3df,2p)
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 3623 3623        
2 A 1262 1262        
3 A 929 929        
4 A 746 746        
5 A 536 536        
6 B 3622 3622        
7 B 2202 2202        
8 B 923 923        
9 B 539 539        

Unscaled Zero Point Vibrational Energy (zpe) 7190.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7190.2 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/6-311+G(3df,2p)
ABC
12.24284 0.34566 0.34563

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/6-311+G(3df,2p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.020
N2 0.000 1.222 -0.081
N3 0.000 -1.222 -0.081
H4 0.626 1.751 0.511
H5 -0.626 -1.751 0.511

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22581.22581.92321.9232
N21.22582.44341.01103.0950
N31.22582.44343.09501.0110
H41.92321.01103.09503.7189
H51.92323.09501.01103.7189

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 118.271 C1 N3 H5 118.271
N2 C1 N3 170.561
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability