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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: HF/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 HF/6-31G*
 hartrees
Energy at 0K-147.894914
Energy at 298.15K 
HF Energy-147.894914
Nuclear repulsion energy60.798430
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*
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 3825 3436 33.89      
2 A 1390 1249 0.28      
3 A 1024 920 16.96      
4 A 837 752 134.79      
5 A 572 514 0.62      
6 B 3820 3433 154.93      
7 B 2354 2115 905.96      
8 B 1015 912 551.70      
9 B 572 514 111.84      

Unscaled Zero Point Vibrational Energy (zpe) 7704.1 cm-1
Scaled (by 0.8985) Zero Point Vibrational Energy (zpe) 6922.1 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*
ABC
12.44686 0.35442 0.35421

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.003
N2 0.000 1.208 -0.073
N3 0.000 -1.208 -0.073
H4 0.627 1.715 0.518
H5 -0.627 -1.715 0.518

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.21001.21001.89931.8993
N21.21002.41600.99983.0476
N31.21002.41603.04760.9998
H41.89930.99983.04763.6527
H51.89933.04760.99983.6527

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 118.208 C1 N3 H5 118.208
N2 C1 N3 173.423
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.689      
2 N -0.736      
3 N -0.736      
4 H 0.392      
5 H 0.392      


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 2.436 2.436
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.550 4.611 0.000
y 4.611 -17.342 0.000
z 0.000 0.000 -17.121
Traceless
 xyz
x 0.682 4.611 0.000
y 4.611 -0.506 0.000
z 0.000 0.000 -0.175
Polar
3z2-r2-0.351
x2-y20.792
xy4.611
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.749 0.382 0.000
y 0.382 5.597 0.000
z 0.000 0.000 1.701


<r2> (average value of r2) Å2
<r2> 38.336
(<r2>)1/2 6.192