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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: PBE1PBE/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 PBE1PBE/6-31G**
 hartrees
Energy at 0K-148.605231
Energy at 298.15K-148.607627
HF Energy-148.605231
Nuclear repulsion energy60.022938
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 PBE1PBE/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 3629 3459 23.82      
2 A 1311 1250 0.10      
3 A 932 888 10.76      
4 A 751 716 111.61      
5 A 531 506 0.02      
6 B 3628 3458 103.85      
7 B 2279 2173 567.56      
8 B 931 888 458.64      
9 B 532 507 76.21      

Unscaled Zero Point Vibrational Energy (zpe) 7262.6 cm-1
Scaled (by 0.9531) Zero Point Vibrational Energy (zpe) 6922.0 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 PBE1PBE/6-31G**
ABC
12.32041 0.34550 0.34543

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.020
N2 0.000 1.221 -0.081
N3 0.000 -1.221 -0.081
H4 0.628 1.758 0.506
H5 -0.628 -1.758 0.506

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22551.22551.92921.9292
N21.22552.44271.01313.1010
N31.22552.44273.10101.0131
H41.92921.01313.10103.7339
H51.92923.10101.01313.7339

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 118.739 C1 N3 H5 118.739
N2 C1 N3 170.608
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.612      
2 N -0.669      
3 N -0.669      
4 H 0.363      
5 H 0.363      


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 2.241 2.241
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.432 4.367 0.000
y 4.367 -16.002 0.000
z 0.000 0.000 -17.017
Traceless
 xyz
x 0.077 4.367 0.000
y 4.367 0.722 0.000
z 0.000 0.000 -0.799
Polar
3z2-r2-1.599
x2-y2-0.430
xy4.367
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.801 0.377 0.000
y 0.377 5.865 0.000
z 0.000 0.000 1.771


<r2> (average value of r2) Å2
<r2> 38.756
(<r2>)1/2 6.225