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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: LSDA/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 LSDA/6-31G*
 hartrees
Energy at 0K-147.968189
Energy at 298.15K-147.970500
HF Energy-147.968189
Nuclear repulsion energy59.825104
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 LSDA/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 3540 3474 24.91      
2 A 1296 1272 0.12      
3 A 862 846 13.41      
4 A 688 676 112.40      
5 A 518 508 0.53      
6 B 3540 3474 117.93      
7 B 2279 2236 471.62      
8 B 869 853 438.13      
9 B 521 511 68.66      

Unscaled Zero Point Vibrational Energy (zpe) 7056.9 cm-1
Scaled (by 0.9813) Zero Point Vibrational Energy (zpe) 6924.9 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 LSDA/6-31G*
ABC
12.73711 0.34303 0.34299

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.026
N2 0.000 1.223 -0.081
N3 0.000 -1.223 -0.081
H4 0.618 1.798 0.492
H5 -0.618 -1.798 0.492

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22721.22721.95801.9580
N21.22722.44511.02103.1364
N31.22722.44513.13641.0210
H41.95801.02103.13643.8032
H51.95803.13641.02103.8032

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 120.851 C1 N3 H5 120.851
N2 C1 N3 169.997
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.531      
2 N -0.623      
3 N -0.623      
4 H 0.358      
5 H 0.358      


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 2.166 2.166
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.502 4.359 0.000
y 4.359 -15.153 0.000
z 0.000 0.000 -17.089
Traceless
 xyz
x -0.381 4.359 0.000
y 4.359 1.642 0.000
z 0.000 0.000 -1.261
Polar
3z2-r2-2.522
x2-y2-1.349
xy4.359
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.804 0.391 0.000
y 0.391 5.993 0.000
z 0.000 0.000 1.776


<r2> (average value of r2) Å2
<r2> 38.887
(<r2>)1/2 6.236