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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: PBEPBE/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 PBEPBE/cc-pVTZ
 hartrees
Energy at 0K-148.672852
Energy at 298.15K-148.675213
HF Energy-148.672852
Nuclear repulsion energy59.812711
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 PBEPBE/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 3509 3485 19.53      
2 A 1252 1243 0.01      
3 A 903 896 9.66      
4 A 700 695 85.27      
5 A 525 521 0.48      
6 B 3509 3485 95.80      
7 B 2187 2172 509.12      
8 B 901 895 398.63      
9 B 527 523 65.44      

Unscaled Zero Point Vibrational Energy (zpe) 7005.9 cm-1
Scaled (by 0.9931) Zero Point Vibrational Energy (zpe) 6957.5 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 PBEPBE/cc-pVTZ
ABC
12.28212 0.34324 0.34314

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.025
N2 0.000 1.224 -0.083
N3 0.000 -1.224 -0.083
H4 0.623 1.773 0.506
H5 -0.623 -1.773 0.506

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22921.22921.94041.9404
N21.22922.44891.01853.1182
N31.22922.44893.11821.0185
H41.94041.01853.11823.7596
H51.94043.11821.01853.7596

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 119.076 C1 N3 H5 119.076
N2 C1 N3 169.893
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.114      
2 N -0.231      
3 N -0.231      
4 H 0.174      
5 H 0.174      


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 1.941 1.941
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.820 3.986 0.000
y 3.986 -15.929 0.000
z 0.000 0.000 -17.328
Traceless
 xyz
x -0.191 3.986 0.000
y 3.986 1.145 0.000
z 0.000 0.000 -0.954
Polar
3z2-r2-1.908
x2-y2-0.891
xy3.986
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.549 0.335 0.000
y 0.335 6.390 0.000
z 0.000 0.000 2.526


<r2> (average value of r2) Å2
<r2> 39.097
(<r2>)1/2 6.253