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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: QCISD(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 QCISD(T)=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-148.615701
Energy at 298.15K-148.618104
HF Energy-147.956437
Nuclear repulsion energy60.012425
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/6-311+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 1256 1256        
3 A 929 929        
4 A 743 743        
5 A 535 535        
6 B 3623 3623        
7 B 2199 2199        
8 B 923 923        
9 B 538 538        

Unscaled Zero Point Vibrational Energy (zpe) 7183.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7183.5 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 QCISD(T)=FULL/6-311+G(3df,2p)
ABC
12.25528 0.34531 0.34527

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(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 -0.082
N3 0.000 -1.222 -0.082
H4 0.625 1.753 0.510
H5 -0.625 -1.753 0.510

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22651.22651.92421.9242
N21.22652.44451.01093.0970
N31.22652.44453.09701.0109
H41.92421.01093.09703.7219
H51.92423.09701.01093.7219

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 118.315 C1 N3 H5 118.315
N2 C1 N3 170.460
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability