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

using model chemistry: PBEPBEultrafine/6-31G(2df,p)

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 PBEPBEultrafine/6-31G(2df,p)
 hartrees
Energy at 0K-168.415207
Energy at 298.15K 
HF Energy-168.415207
Nuclear repulsion energy60.088238
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 PBEPBEultrafine/6-31G(2df,p)
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 3463 3428 228.85 29.89 0.24 0.39
2 Σ 2312 2288 273.27 14.05 0.16 0.28
3 Σ 1296 1283 73.09 22.42 0.24 0.39
4 Π 561 555 1.52 0.72 0.75 0.86
4 Π 561 555 1.52 0.72 0.75 0.86
5 Π 280i 277i 74.28 1.25 0.75 0.86
5 Π 280i 277i 74.28 1.25 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3816.4 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 3777.1 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 PBEPBEultrafine/6-31G(2df,p)
B
0.37814

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-31G(2df,p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.188
N2 0.000 0.000 -0.016
C3 0.000 0.000 -1.189
H4 0.000 0.000 -2.256

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.20442.37773.4447
N21.20441.17342.2403
C32.37771.17341.0670
H43.44472.24031.0670

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 PBEPBEultrafine/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.398      
2 N 0.390      
3 C -0.246      
4 H 0.253      


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 -2.674 2.674
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.443 0.000 0.000
y 0.000 -16.443 0.000
z 0.000 0.000 -13.321
Traceless
 xyz
x -1.561 0.000 0.000
y 0.000 -1.561 0.000
z 0.000 0.000 3.122
Polar
3z2-r26.243
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.753 0.000 0.000
y 0.000 1.753 0.000
z 0.000 0.000 5.548


<r2> (average value of r2) Å2
<r2> 34.498
(<r2>)1/2 5.873