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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-148.557871
Energy at 298.15K-148.560073
HF Energy-148.557871
Nuclear repulsion energy59.203992
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 3570 3521 10.18      
2 A 1254 1237 0.03      
3 A 778 768 18.64      
4 A 640 632 157.69      
5 A 496 489 0.05      
6 B 3573 3524 125.33      
7 B 2229 2198 412.74      
8 B 782 772 544.18      
9 B 496 489 47.61      

Unscaled Zero Point Vibrational Energy (zpe) 6909.3 cm-1
Scaled (by 0.9862) Zero Point Vibrational Energy (zpe) 6814.0 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
15.06654 0.33336 0.33335

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 0.048
N2 0.000 1.233 -0.081
N3 0.000 -1.233 -0.081
H4 0.570 1.907 0.426
H5 -0.570 -1.907 0.426

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.23981.23982.02622.0262
N21.23982.46611.01823.2315
N31.23982.46613.23151.0182
H42.02621.01823.23153.9811
H52.02623.23151.01823.9811

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 127.345 C1 N3 H5 127.345
N2 C1 N3 168.082
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 0.392      
2 N -0.518      
3 N -0.518      
4 H 0.322      
5 H 0.322      


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 2.261 2.261
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.904 4.699 0.000
y 4.699 -14.194 0.000
z 0.000 0.000 -17.578
Traceless
 xyz
x -1.018 4.699 0.000
y 4.699 3.047 0.000
z 0.000 0.000 -2.028
Polar
3z2-r2-4.057
x2-y2-2.710
xy4.699
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.540 0.324 0.000
y 0.324 6.298 0.000
z 0.000 0.000 1.535


<r2> (average value of r2) Å2
<r2> 39.813
(<r2>)1/2 6.310