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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: CCSD(T)=FULL/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-148.401918
Energy at 298.15K-148.404306
HF Energy-147.909627
Nuclear repulsion energy59.284312
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/cc-pVDZ
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 3561 3430        
2 A 1237 1192        
3 A 982 946        
4 A 789 760        
5 A 498 480        
6 B 3563 3432        
7 B 2181 2101        
8 B 973 938        
9 B 503 484        

Unscaled Zero Point Vibrational Energy (zpe) 7143.9 cm-1
Scaled (by 0.9632) Zero Point Vibrational Energy (zpe) 6881.0 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/cc-pVDZ
ABC
11.03234 0.33817 0.33811

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.020
N2 0.000 1.240 -0.086
N3 0.000 -1.240 -0.086
H4 0.656 1.718 0.539
H5 -0.656 -1.718 0.539

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.24411.24411.91091.9109
N21.24412.47911.02433.0934
N31.24412.47913.09341.0243
H41.91091.02433.09343.6784
H51.91093.09341.02433.6784

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 114.445 C1 N3 H5 114.445
N2 C1 N3 170.228
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability