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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: G2

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at G2
 hartrees
Energy at 0K-148.555524
Energy at 298.15K-148.551101
HF Energy-147.894914
Nuclear repulsion energy60.798128
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 HF/6-31G*
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 3825 3604 33.89      
2 A 1390 1309 0.28      
3 A 1024 964 16.96      
4 A 837 788 134.79      
5 A 572 539 0.62      
6 B 3820 3600 154.93      
7 B 2354 2218 905.96      
8 B 1015 956 551.70      
9 B 572 539 111.84      

Unscaled Zero Point Vibrational Energy (zpe) 7704.1 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 7258.8 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 MP2=FULL/6-31G*
ABC
12.40101 0.34055 0.34055

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.029
N2 0.000 1.229 -0.083
N3 0.000 -1.229 -0.083
H4 0.624 1.781 0.497
H5 -0.624 -1.781 0.497

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.23441.23441.94451.9445
N21.23442.45861.01523.1287
N31.23442.45863.12871.0152
H41.94451.01523.12873.7744
H51.94453.12871.01523.7744

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 118.210 C1 N3 H5 118.210
N2 C1 N3 173.442
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability