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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: PBEPBE/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-148.640773
Energy at 298.15K-148.643124
HF Energy-148.640773
Nuclear repulsion energy59.417311
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/aug-cc-pVDZ
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 3499 3478 17.72      
2 A 1244 1237 0.02      
3 A 908 902 8.60      
4 A 699 694 81.92      
5 A 515 512 0.41      
6 B 3499 3477 102.88      
7 B 2169 2156 559.32      
8 B 907 901 379.80      
9 B 519 516 60.97      

Unscaled Zero Point Vibrational Energy (zpe) 6979.0 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 6936.4 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 PBEPBE/aug-cc-pVDZ
ABC
11.94216 0.33898 0.33877

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.031
N2 0.000 1.233 -0.086
N3 0.000 -1.233 -0.086
H4 0.628 1.778 0.511
H5 -0.628 -1.778 0.511

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.23841.23841.94551.9455
N21.23842.46571.02373.1327
N31.23842.46573.13271.0237
H41.94551.02373.13273.7706
H51.94553.13271.02373.7706

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 118.338 C1 N3 H5 118.338
N2 C1 N3 169.181
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.172      
2 N -0.083      
3 N -0.083      
4 H -0.003      
5 H -0.003      


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 1.914 1.914
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.218 4.063 0.000
y 4.063 -16.487 0.000
z 0.000 0.000 -17.731
Traceless
 xyz
x -0.108 4.063 0.000
y 4.063 0.987 0.000
z 0.000 0.000 -0.879
Polar
3z2-r2-1.758
x2-y2-0.730
xy4.063
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.217 0.288 0.000
y 0.288 7.155 0.000
z 0.000 0.000 3.191


<r2> (average value of r2) Å2
<r2> 39.728
(<r2>)1/2 6.303