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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: TPSSh/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at TPSSh/6-31G**
 hartrees
Energy at 0K-148.788996
Energy at 298.15K-148.791375
HF Energy-148.788996
Nuclear repulsion energy59.780845
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 TPSSh/6-31G**
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 3584 3436 18.79      
2 A 1279 1226 0.04      
3 A 939 900 8.38      
4 A 746 716 101.07      
5 A 521 499 0.02      
6 B 3584 3436 77.07      
7 B 2230 2138 501.67      
8 B 932 894 437.15      
9 B 522 500 69.79      

Unscaled Zero Point Vibrational Energy (zpe) 7168.3 cm-1
Scaled (by 0.9587) Zero Point Vibrational Energy (zpe) 6872.3 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 TPSSh/6-31G**
ABC
12.08927 0.34288 0.34285

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.027
N2 0.000 1.226 -0.084
N3 0.000 -1.226 -0.084
H4 0.630 1.761 0.507
H5 -0.630 -1.761 0.507

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.23131.23131.93081.9308
N21.23132.45261.01573.1095
N31.23132.45263.10951.0157
H41.93081.01573.10953.7403
H51.93083.10951.01573.7403

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 118.160 C1 N3 H5 118.160
N2 C1 N3 169.687
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.642      
2 N -0.615      
3 N -0.615      
4 H 0.294      
5 H 0.294      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 2.160 2.160
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.856 0.420 0.000
y 0.420 5.982 0.000
z 0.000 0.000 1.831


<r2> (average value of r2) Å2
<r2> 38.932
(<r2>)1/2 6.240