return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: wB97X-D/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at wB97X-D/SDD
 hartrees
Energy at 0K-148.687596
Energy at 298.15K-148.689795
HF Energy-148.687596
Nuclear repulsion energy59.567831
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 wB97X-D/SDD
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 3776 3776 18.65      
2 A 1299 1299 0.00      
3 A 700 700 11.85      
4 A 640 640 230.50      
5 A 535 535 2.39      
6 B 3776 3776 278.11      
7 B 2292 2292 723.63      
8 B 698 698 640.68      
9 B 544 544 116.72      

Unscaled Zero Point Vibrational Energy (zpe) 7130.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7130.0 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 wB97X-D/SDD
ABC
17.29885 0.33580 0.33567

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/SDD

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.033
N2 0.000 1.226 -0.072
N3 0.000 -1.226 -0.072
H4 0.539 1.930 0.407
H5 -0.539 -1.930 0.407

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.23101.23102.03862.0386
N21.23102.45291.00773.2380
N31.23102.45293.23801.0077
H42.03861.00773.23804.0082
H52.03863.23801.00774.0082

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 130.914 C1 N3 H5 130.914
N2 C1 N3 170.147
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.149      
2 N -0.399      
3 N -0.399      
4 H 0.324      
5 H 0.324      


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 2.371 2.371
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.187 4.971 0.000
y 4.971 -14.098 0.000
z 0.000 0.000 -17.833
Traceless
 xyz
x -1.222 4.971 0.000
y 4.971 3.412 0.000
z 0.000 0.000 -2.190
Polar
3z2-r2-4.380
x2-y2-3.090
xy4.971
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.690 0.172 0.000
y 0.172 6.527 0.000
z 0.000 0.000 1.669


<r2> (average value of r2) Å2
<r2> 39.728
(<r2>)1/2 6.303