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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: HSEh1PBE/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 HSEh1PBE/6-31G**
 hartrees
Energy at 0K-148.626518
Energy at 298.15K-148.628904
HF Energy-148.626518
Nuclear repulsion energy60.071330
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 HSEh1PBE/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 3652 3485 25.25      
2 A 1312 1252 0.11      
3 A 919 877 11.21      
4 A 742 708 108.21      
5 A 530 506 0.05      
6 B 3651 3484 114.46      
7 B 2281 2177 571.69      
8 B 918 876 441.71      
9 B 531 507 79.08      

Unscaled Zero Point Vibrational Energy (zpe) 7267.8 cm-1
Scaled (by 0.9543) Zero Point Vibrational Energy (zpe) 6935.7 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 HSEh1PBE/6-31G**
ABC
12.34478 0.34601 0.34594

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.018
N2 0.000 1.221 -0.080
N3 0.000 -1.221 -0.080
H4 0.627 1.756 0.506
H5 -0.627 -1.756 0.506

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22461.22461.92731.9273
N21.22462.44121.01193.0978
N31.22462.44123.09781.0119
H41.92731.01193.09783.7289
H51.92733.09781.01193.7289

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 118.721 C1 N3 H5 118.721
N2 C1 N3 170.757
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.638      
2 N -0.617      
3 N -0.617      
4 H 0.298      
5 H 0.298      


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 2.193 2.193
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.402 4.286 0.000
y 4.286 -15.969 0.000
z 0.000 0.000 -16.971
Traceless
 xyz
x 0.068 4.286 0.000
y 4.286 0.718 0.000
z 0.000 0.000 -0.786
Polar
3z2-r2-1.571
x2-y2-0.433
xy4.286
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.824 0.389 0.000
y 0.389 5.876 0.000
z 0.000 0.000 1.794


<r2> (average value of r2) Å2
<r2> 38.688
(<r2>)1/2 6.220