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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: TPSSh/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at TPSSh/STO-3G
 hartrees
Energy at 0K-146.853245
Energy at 298.15K-146.855471
HF Energy-146.853245
Nuclear repulsion energy57.682038
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 TPSSh/STO-3G
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 3480 3480 0.04      
2 A 1213 1213 1.53      
3 A 1096 1096 0.22      
4 A 868 868 51.51      
5 A 466 466 0.42      
6 B 3492 3492 17.51      
7 B 2200 2200 116.78      
8 B 1045 1045 319.99      
9 B 468 468 38.39      

Unscaled Zero Point Vibrational Energy (zpe) 7163.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7163.9 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 TPSSh/STO-3G
ABC
9.17919 0.32445 0.32370

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/STO-3G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.080
N2 0.000 1.264 -0.111
N3 0.000 -1.264 -0.111
H4 0.697 1.754 0.538
H5 -0.697 -1.754 0.538

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.27881.27881.94211.9421
N21.27882.52901.07093.1650
N31.27882.52903.16501.0709
H41.94211.07093.16503.7744
H51.94213.16501.07093.7744

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 111.181 C1 N3 H5 111.181
N2 C1 N3 162.854
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.186      
2 N -0.288      
3 N -0.288      
4 H 0.195      
5 H 0.195      


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 2.032 2.032
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.934 0.692 0.000
y 0.692 4.426 0.000
z 0.000 0.000 0.844


<r2> (average value of r2) Å2
<r2> 40.057
(<r2>)1/2 6.329