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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: PBE1PBE/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at PBE1PBE/3-21G
 hartrees
Energy at 0K-147.774322
Energy at 298.15K-147.776634
HF Energy-147.774322
Nuclear repulsion energy60.033347
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 PBE1PBE/3-21G
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 3619 3475 22.12      
2 A 1319 1267 0.05      
3 A 777 746 18.04      
4 A 671 644 170.21      
5 A 549 527 3.34      
6 B 3619 3475 182.71      
7 B 2338 2246 438.29      
8 B 785 754 577.79      
9 B 559 537 98.63      

Unscaled Zero Point Vibrational Energy (zpe) 7117.2 cm-1
Scaled (by 0.9604) Zero Point Vibrational Energy (zpe) 6835.4 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 PBE1PBE/3-21G
ABC
15.57439 0.34294 0.34261

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/3-21G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.019
N2 0.000 1.216 -0.071
N3 0.000 -1.216 -0.071
H4 0.574 1.878 0.440
H5 -0.574 -1.878 0.440

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.21971.21972.00812.0081
N21.21972.43261.01373.1882
N31.21972.43263.18821.0137
H42.00811.01373.18823.9273
H52.00813.18821.01373.9273

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 127.847 C1 N3 H5 127.847
N2 C1 N3 171.489
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.794      
2 N -0.731      
3 N -0.731      
4 H 0.334      
5 H 0.334      


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 2.289 2.289
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.548 4.658 0.000
y 4.658 -14.329 0.000
z 0.000 0.000 -17.184
Traceless
 xyz
x -0.792 4.658 0.000
y 4.658 2.537 0.000
z 0.000 0.000 -1.745
Polar
3z2-r2-3.491
x2-y2-2.219
xy4.658
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.262 0.345 0.000
y 0.345 5.555 0.000
z 0.000 0.000 1.209


<r2> (average value of r2) Å2
<r2> 38.889
(<r2>)1/2 6.236