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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: MP2/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP2/6-311+G(3df,2p)
 hartrees
Energy at 0K-148.510625
Energy at 298.15K-148.512999
HF Energy-147.956179
Nuclear repulsion energy60.000214
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 MP2/6-311+G(3df,2p)
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 3646 3440 31.85      
2 A 1262 1191 0.01      
3 A 890 840 10.65      
4 A 709 669 91.77      
5 A 535 505 0.58      
6 B 3646 3439 189.79      
7 B 2216 2090 640.70      
8 B 880 831 474.26      
9 B 543 512 97.05      

Unscaled Zero Point Vibrational Energy (zpe) 7163.4 cm-1
Scaled (by 0.9434) Zero Point Vibrational Energy (zpe) 6757.9 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 MP2/6-311+G(3df,2p)
ABC
12.58172 0.34492 0.34479

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311+G(3df,2p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.027
N2 0.000 1.221 -0.083
N3 0.000 -1.221 -0.083
H4 0.615 1.773 0.499
H5 -0.615 -1.773 0.499

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22621.22621.93521.9352
N21.22622.44271.01053.1116
N31.22622.44273.11161.0105
H41.93521.01053.11163.7531
H51.93523.11161.01053.7531

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 119.491 C1 N3 H5 119.491
N2 C1 N3 169.778
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability