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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: QCISD(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 QCISD(T)=FULL/cc-pVDZ
 hartrees
Energy at 0K-148.402943
Energy at 298.15K-148.405328
HF Energy-147.909460
Nuclear repulsion energy59.256123
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/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 3563 3417        
2 A 1234 1184        
3 A 981 941        
4 A 786 754        
5 A 497 477        
6 B 3565 3419        
7 B 2175 2086        
8 B 972 932        
9 B 502 482        

Unscaled Zero Point Vibrational Energy (zpe) 7137.5 cm-1
Scaled (by 0.959) Zero Point Vibrational Energy (zpe) 6844.8 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/cc-pVDZ
ABC
11.05152 0.33780 0.33773

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.021
N2 0.000 1.240 -0.086
N3 0.000 -1.240 -0.086
H4 0.655 1.721 0.538
H5 -0.655 -1.721 0.538

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.24481.24481.91231.9123
N21.24482.48021.02413.0961
N31.24482.48023.09611.0241
H41.91231.02413.09613.6828
H51.91233.09611.02413.6828

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 114.536 C1 N3 H5 114.536
N2 C1 N3 170.091
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability