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All results from a given calculation for HCNO (fulminic acid)

using model chemistry: TPSSh/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 1Σ
Energy calculated at TPSSh/STO-3G
 hartrees
Energy at 0K-166.347309
Energy at 298.15K 
HF Energy-166.347309
Nuclear repulsion energy57.541853
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 TPSSh/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 Σ 3699 3699 319.81 34.91 0.26 0.42
2 Σ 2409 2409 49.33 6.84 0.23 0.37
3 Σ 1227 1227 14.83 14.07 0.27 0.43
4 Π 472 472 3.36 0.50 0.75 0.86
4 Π 472 472 3.36 0.50 0.75 0.86
5 Π 492i 492i 63.94 0.67 0.75 0.86
5 Π 492i 492i 63.94 0.67 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3647.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3647.2 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 TPSSh/STO-3G
B
0.34674

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.248
N2 0.000 0.000 -0.034
C3 0.000 0.000 -1.239
H4 0.000 0.000 -2.316

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.28172.48663.5635
N21.28171.20492.2818
C32.48661.20491.0769
H43.56352.28181.0769

picture of fulminic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 N2 C3 180.000 N2 C3 H4 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.095      
2 N -0.034      
3 C -0.027      
4 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 -2.064 2.064
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.384 0.000 0.000
y 0.000 0.384 0.000
z 0.000 0.000 3.915


<r2> (average value of r2) Å2
<r2> 35.888
(<r2>)1/2 5.991