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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: B3PW91/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 B3PW91/cc-pVTZ
 hartrees
Energy at 0K-148.783150
Energy at 298.15K-148.785563
HF Energy-148.783150
Nuclear repulsion energy60.323237
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 B3PW91/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 3613 3474 25.32      
2 A 1295 1245 0.00      
3 A 920 885 11.97      
4 A 725 697 92.29      
5 A 546 525 0.30      
6 B 3610 3472 131.47      
7 B 2246 2160 627.62      
8 B 919 884 426.85      
9 B 548 527 77.95      

Unscaled Zero Point Vibrational Energy (zpe) 7210.5 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 6933.6 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 B3PW91/cc-pVTZ
ABC
12.54527 0.34889 0.34889

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVTZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.016
N2 0.000 1.215 -0.079
N3 0.000 -1.215 -0.079
H4 0.620 1.756 0.506
H5 -0.620 -1.756 0.506

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.21851.21851.92581.9258
N21.21852.42951.01023.0909
N31.21852.42953.09091.0102
H41.92581.01023.09093.7248
H51.92583.09091.01023.7248

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 119.273 C1 N3 H5 119.273
N2 C1 N3 171.037
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.174      
2 N -0.265      
3 N -0.265      
4 H 0.178      
5 H 0.178      


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 2.006 2.006
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.664 4.065 0.000
y 4.065 -16.055 0.000
z 0.000 0.000 -17.177
Traceless
 xyz
x -0.048 4.065 0.000
y 4.065 0.865 0.000
z 0.000 0.000 -0.817
Polar
3z2-r2-1.634
x2-y2-0.609
xy4.065
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.482 0.303 0.000
y 0.303 6.196 0.000
z 0.000 0.000 2.455


<r2> (average value of r2) Å2
<r2> 38.586
(<r2>)1/2 6.212