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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: LSDA/STO-3G

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/STO-3G
 hartrees
Energy at 0K-145.993953
Energy at 298.15K-145.996140
HF Energy-145.993953
Nuclear repulsion energy58.000830
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/STO-3G
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 3535 3165 1.59      
2 A 1238 1109 1.25      
3 A 975 873 3.20      
4 A 803 719 65.18      
5 A 481 431 0.03      
6 B 3548 3177 53.08      
7 B 2274 2037 102.97      
8 B 950 850 345.91      
9 B 485 434 40.17      

Unscaled Zero Point Vibrational Energy (zpe) 7144.0 cm-1
Scaled (by 0.8955) Zero Point Vibrational Energy (zpe) 6397.5 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/STO-3G
ABC
9.92117 0.32684 0.32626

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/STO-3G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.078
N2 0.000 1.256 -0.107
N3 0.000 -1.256 -0.107
H4 0.677 1.796 0.512
H5 -0.677 -1.796 0.512

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.26921.26921.96751.9675
N21.26922.51121.06423.1862
N31.26922.51123.18621.0642
H41.96751.06423.18623.8384
H51.96753.18621.06423.8384

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 114.671 C1 N3 H5 114.671
N2 C1 N3 163.238
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.165      
2 N -0.303      
3 N -0.303      
4 H 0.220      
5 H 0.220      


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 2.055 2.055
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.007 3.835 0.000
y 3.835 -14.911 0.000
z 0.000 0.000 -15.698
Traceless
 xyz
x 0.297 3.835 0.000
y 3.835 0.441 0.000
z 0.000 0.000 -0.738
Polar
3z2-r2-1.476
x2-y2-0.096
xy3.835
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.850 0.605 0.000
y 0.605 4.358 0.000
z 0.000 0.000 0.775


<r2> (average value of r2) Å2
<r2> 39.655
(<r2>)1/2 6.297