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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: PBEPBE/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 PBEPBE/6-31G**
 hartrees
Energy at 0K-148.616144
Energy at 298.15K-148.618473
HF Energy-148.616144
Nuclear repulsion energy59.466155
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/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 3520 3472 17.11      
2 A 1256 1239 0.01      
3 A 904 892 7.58      
4 A 714 704 95.55      
5 A 507 500 0.12      
6 B 3521 3473 71.77      
7 B 2203 2173 439.47      
8 B 902 890 401.54      
9 B 509 502 62.20      

Unscaled Zero Point Vibrational Energy (zpe) 7017.8 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 6921.6 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 PBEPBE/6-31G**
ABC
11.96422 0.33938 0.33934

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.031
N2 0.000 1.232 -0.085
N3 0.000 -1.232 -0.085
H4 0.633 1.774 0.506
H5 -0.633 -1.774 0.506

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.23771.23771.94251.9425
N21.23772.46441.02173.1284
N31.23772.46443.12841.0217
H41.94251.02173.12843.7668
H51.94253.12841.02173.7668

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 118.263 C1 N3 H5 118.263
N2 C1 N3 169.243
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.586      
2 N -0.573      
3 N -0.573      
4 H 0.280      
5 H 0.280      


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 2.089 2.089
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.447 4.153 0.000
y 4.153 -15.717 0.000
z 0.000 0.000 -17.019
Traceless
 xyz
x -0.079 4.153 0.000
y 4.153 1.016 0.000
z 0.000 0.000 -0.938
Polar
3z2-r2-1.875
x2-y2-0.730
xy4.153
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.878 0.432 0.000
y 0.432 6.059 0.000
z 0.000 0.000 1.853


<r2> (average value of r2) Å2
<r2> 39.210
(<r2>)1/2 6.262