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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: CCSD(T)/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)/6-311+G(3df,2p)
 hartrees
Energy at 0K-148.544253
Energy at 298.15K-148.546653
HF Energy-147.956028
Nuclear repulsion energy59.917974
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)/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 3608 3561        
2 A 1252 1236        
3 A 937 924        
4 A 747 737        
5 A 529 522        
6 B 3608 3560        
7 B 2184 2155        
8 B 929 917        
9 B 532 525        

Unscaled Zero Point Vibrational Energy (zpe) 7162.6 cm-1
Scaled (by 0.9869) Zero Point Vibrational Energy (zpe) 7068.7 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)/6-311+G(3df,2p)
ABC
12.07056 0.34443 0.34436

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.021
N2 0.000 1.224 -0.083
N3 0.000 -1.224 -0.083
H4 0.629 1.749 0.513
H5 -0.629 -1.749 0.513

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22881.22881.92221.9222
N21.22882.44871.01263.0966
N31.22882.44873.09661.0126
H41.92221.01263.09663.7165
H51.92223.09661.01263.7165

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 117.774 C1 N3 H5 117.774
N2 C1 N3 170.286
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability