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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: PBEPBE/6-311G**

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/6-311G**
 hartrees
Energy at 0K-148.656289
Energy at 298.15K-148.658640
HF Energy-148.656289
Nuclear repulsion energy59.736670
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/6-311G**
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 3514 3482 22.21      
2 A 1254 1242 0.01      
3 A 896 888 7.45      
4 A 705 698 95.22      
5 A 519 515 0.40      
6 B 3514 3482 88.80      
7 B 2200 2180 484.78      
8 B 896 888 396.98      
9 B 522 518 67.13      

Unscaled Zero Point Vibrational Energy (zpe) 7009.4 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 6945.6 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/6-311G**
ABC
12.19590 0.34242 0.34238

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-311G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.026
N2 0.000 1.226 -0.083
N3 0.000 -1.226 -0.083
H4 0.628 1.773 0.505
H5 -0.628 -1.773 0.505

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.23091.23091.94131.9413
N21.23092.45211.01993.1205
N31.23092.45213.12051.0199
H41.94131.01993.12053.7624
H51.94133.12051.01993.7624

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 118.901 C1 N3 H5 118.901
N2 C1 N3 169.803
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.373      
2 N -0.409      
3 N -0.409      
4 H 0.223      
5 H 0.223      


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 2.070 2.070
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.639 4.150 0.000
y 4.150 -15.950 0.000
z 0.000 0.000 -17.199
Traceless
 xyz
x -0.064 4.150 0.000
y 4.150 0.969 0.000
z 0.000 0.000 -0.905
Polar
3z2-r2-1.810
x2-y2-0.689
xy4.150
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.085 0.365 0.000
y 0.365 6.142 0.000
z 0.000 0.000 2.064


<r2> (average value of r2) Å2
<r2> 39.100
(<r2>)1/2 6.253