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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: HF/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 HF/cc-pVDZ
 hartrees
Energy at 0K-147.913745
Energy at 298.15K-147.916291
HF Energy-147.913745
Nuclear repulsion energy60.698638
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/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 3790 3441 39.20      
2 A 1380 1253 0.27      
3 A 1057 960 12.22      
4 A 834 758 108.18      
5 A 577 524 0.70      
6 B 3785 3437 153.93      
7 B 2343 2127 898.14      
8 B 1048 952 443.31      
9 B 580 527 95.19      

Unscaled Zero Point Vibrational Energy (zpe) 7697.4 cm-1
Scaled (by 0.908) Zero Point Vibrational Energy (zpe) 6989.2 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/cc-pVDZ
ABC
11.65719 0.35436 0.35426

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.009
N2 0.000 1.211 0.074
N3 0.000 -1.211 0.074
H4 -0.643 1.681 -0.542
H5 0.643 -1.681 -0.542

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.21251.21251.88221.8822
N21.21252.42151.00653.0258
N31.21252.42153.02581.0065
H41.88221.00653.02583.5999
H51.88223.02581.00653.5999

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 115.731 C1 N3 H5 115.731
N2 C1 N3 173.873
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.306      
2 N -0.309      
3 N -0.309      
4 H 0.156      
5 H 0.156      


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 -2.280 2.280
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.421 -4.214 0.000
y -4.214 -17.538 0.000
z 0.000 0.000 -16.925
Traceless
 xyz
x 0.811 -4.214 0.000
y -4.214 -0.865 0.000
z 0.000 0.000 0.054
Polar
3z2-r20.109
x2-y21.118
xy-4.214
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.882 -0.383 0.000
y -0.383 5.430 0.000
z 0.000 0.000 1.837


<r2> (average value of r2) Å2
<r2> 38.260
(<r2>)1/2 6.185