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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: MP4/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP4/cc-pVTZ
 hartrees
Energy at 0K-148.550355
Energy at 298.15K-148.552736
HF Energy-147.955057
Nuclear repulsion energy59.711293
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 MP4/cc-pVTZ
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 3593 3483        
2 A 1221 1183        
3 A 937 908        
4 A 733 710        
5 A 520 504        
6 B 3593 3483        
7 B 2171 2104        
8 B 925 896        
9 B 523 507        

Unscaled Zero Point Vibrational Energy (zpe) 7108.1 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 6889.2 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 MP4/cc-pVTZ
ABC
11.93057 0.34199 0.34187

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/cc-pVTZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.026
N2 0.000 1.229 -0.084
N3 0.000 -1.229 -0.084
H4 0.630 1.748 0.514
H5 -0.630 -1.748 0.514

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.23431.23431.92151.9215
N21.23432.45891.01233.1019
N31.23432.45893.10191.0123
H41.92151.01233.10193.7168
H51.92153.10191.01233.7168

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 117.244 C1 N3 H5 117.244
N2 C1 N3 169.779
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability