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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: PBEPBE/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-148.623349
Energy at 298.15K-148.625698
HF Energy-148.623349
Nuclear repulsion energy59.361140
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/cc-pVDZ
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 3467 3447 19.50      
2 A 1248 1240 0.00      
3 A 925 920 5.49      
4 A 720 716 79.44      
5 A 505 502 0.42      
6 B 3468 3448 66.88      
7 B 2191 2178 433.56      
8 B 921 915 355.65      
9 B 510 507 57.50      

Unscaled Zero Point Vibrational Energy (zpe) 6977.1 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 6936.6 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/cc-pVDZ
ABC
11.45602 0.33902 0.33891

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.029
N2 0.000 1.234 -0.087
N3 0.000 -1.234 -0.087
H4 0.644 1.757 0.521
H5 -0.644 -1.757 0.521

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.23971.23971.93491.9349
N21.23972.46861.02843.1196
N31.23972.46863.11961.0284
H41.93491.02843.11963.7426
H51.93493.11961.02843.7426

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 116.787 C1 N3 H5 116.787
N2 C1 N3 169.256
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.104      
2 N -0.184      
3 N -0.184      
4 H 0.132      
5 H 0.132      


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 1.970 1.970
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.409 3.874 0.000
y 3.874 -15.807 0.000
z 0.000 0.000 -16.940
Traceless
 xyz
x -0.036 3.874 0.000
y 3.874 0.868 0.000
z 0.000 0.000 -0.832
Polar
3z2-r2-1.664
x2-y2-0.603
xy3.874
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.001 0.446 0.000
y 0.446 5.959 0.000
z 0.000 0.000 1.970


<r2> (average value of r2) Å2
<r2> 39.220
(<r2>)1/2 6.263