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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: PBE1PBE/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 PBE1PBE/6-31G
 hartrees
Energy at 0K-148.547672
Energy at 298.15K-148.549909
HF Energy-148.547672
Nuclear repulsion energy59.837362
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/6-31G
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 3726 3562 17.91      
2 A 1314 1256 0.01      
3 A 755 722 22.46      
4 A 653 624 201.99      
5 A 524 501 0.07      
6 B 3726 3562 221.74      
7 B 2318 2216 552.06      
8 B 763 729 614.46      
9 B 521 498 66.38      

Unscaled Zero Point Vibrational Energy (zpe) 7148.9 cm-1
Scaled (by 0.9559) Zero Point Vibrational Energy (zpe) 6833.6 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 PBE1PBE/6-31G
ABC
16.58811 0.33957 0.33939

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.034
N2 0.000 1.221 -0.074
N3 0.000 -1.221 -0.074
H4 0.552 1.907 0.413
H5 -0.552 -1.907 0.413

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22541.22542.02132.0213
N21.22542.44121.00673.2133
N31.22542.44123.21331.0067
H42.02131.00673.21333.9709
H52.02133.21331.00673.9709

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 129.547 C1 N3 H5 129.547
N2 C1 N3 169.878
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.462      
2 N -0.578      
3 N -0.578      
4 H 0.347      
5 H 0.347      


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 2.349 2.349
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.951 4.846 0.000
y 4.846 -14.186 0.000
z 0.000 0.000 -17.611
Traceless
 xyz
x -1.053 4.846 0.000
y 4.846 3.095 0.000
z 0.000 0.000 -2.043
Polar
3z2-r2-4.085
x2-y2-2.765
xy4.846
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.463 0.256 0.000
y 0.256 6.144 0.000
z 0.000 0.000 1.445


<r2> (average value of r2) Å2
<r2> 39.316
(<r2>)1/2 6.270