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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: HF/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at HF/6-31G(2df,p)
 hartrees
Energy at 0K-147.918685
Energy at 298.15K-147.921242
HF Energy-147.918685
Nuclear repulsion energy60.991399
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 HF/6-31G(2df,p)
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 3819 3459 36.91      
2 A 1381 1250 0.07      
3 A 1032 934 18.32      
4 A 827 749 109.88      
5 A 599 542 0.42      
6 B 3814 3454 172.95      
7 B 2344 2122 895.76      
8 B 1019 922 485.91      
9 B 601 545 113.07      

Unscaled Zero Point Vibrational Energy (zpe) 7717.8 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 6988.4 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 HF/6-31G(2df,p)
ABC
12.26499 0.35703 0.35691

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G(2df,p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.006
N2 0.000 1.204 0.072
N3 0.000 -1.204 0.072
H4 -0.629 1.699 -0.526
H5 0.629 -1.699 -0.526

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.20621.20621.88771.8877
N21.20622.40860.99883.0299
N31.20622.40863.02990.9988
H41.88770.99883.02993.6225
H51.88773.02990.99883.6225

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 117.461 C1 N3 H5 117.461
N2 C1 N3 173.687
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.502      
2 N -0.568      
3 N -0.568      
4 H 0.317      
5 H 0.317      


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 -2.192 2.192
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.455 -4.209 0.000
y -4.209 -17.090 0.000
z 0.000 0.000 -16.950
Traceless
 xyz
x 0.565 -4.209 0.000
y -4.209 -0.387 0.000
z 0.000 0.000 -0.177
Polar
3z2-r2-0.355
x2-y20.635
xy-4.209
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.125 -0.360 0.000
y -0.360 5.520 0.000
z 0.000 0.000 2.080


<r2> (average value of r2) Å2
<r2> 38.006
(<r2>)1/2 6.165