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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: QCISD/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-148.522664
Energy at 298.15K-148.525099
HF Energy-147.963631
Nuclear repulsion energy60.149496
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/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3637 3637 25.48      
2 A 1274 1274 0.00      
3 A 964 964 7.07      
4 A 770 770 90.16      
5 A 541 541 0.01      
6 B 3635 3635 127.47      
7 B 2210 2210 645.94      
8 B 955 955 451.60      
9 B 544 544 81.21      

Unscaled Zero Point Vibrational Energy (zpe) 7265.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7265.2 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 QCISD/Def2TZVPP
ABC
11.99823 0.34714 0.34713

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/Def2TZVPP

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.013
N2 0.000 1.221 -0.080
N3 0.000 -1.221 -0.080
H4 0.633 1.728 0.520
H5 -0.633 -1.728 0.520

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22431.22431.90881.9088
N21.22432.44161.00893.0750
N31.22432.44163.07501.0089
H41.90881.00893.07503.6804
H51.90883.07501.00893.6804

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 117.132 C1 N3 H5 117.132
N2 C1 N3 171.275
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability