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

using model chemistry: PBE1PBE/6-311+G(3df,2p)

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 PBE1PBE/6-311+G(3df,2p)
 hartrees
Energy at 0K-168.450297
Energy at 298.15K 
HF Energy-168.450297
Nuclear repulsion energy60.913521
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 PBE1PBE/6-311+G(3df,2p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Σ 3510 3510 274.43 27.53 0.23 0.37
2 Σ 2368 2368 451.60 50.93 0.06 0.11
3 Σ 1338 1338 139.72 23.55 0.20 0.33
4 Π 584 584 1.97 0.30 0.75 0.86
4 Π 584 584 1.97 0.30 0.75 0.86
5 Π 281 281 73.90 5.14 0.75 0.86
5 Π 281 281 73.90 5.14 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4472.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4472.9 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 PBE1PBE/6-311+G(3df,2p)
B
0.38878

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-311+G(3df,2p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.173
N2 0.000 0.000 -0.018
C3 0.000 0.000 -1.171
H4 0.000 0.000 -2.232

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.19022.34363.4051
N21.19021.15332.2148
C32.34361.15331.0615
H43.40512.21481.0615

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 PBE1PBE/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.671      
2 N -0.049      
3 C 0.449      
4 H 0.271      


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 -3.169 3.169
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.841 0.000 0.000
y 0.000 -16.841 0.000
z 0.000 0.000 -13.985
Traceless
 xyz
x -1.428 0.000 0.000
y 0.000 -1.428 0.000
z 0.000 0.000 2.857
Polar
3z2-r25.713
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 2.389 0.000 0.000
y 0.000 2.389 0.000
z 0.000 0.000 6.273


<r2> (average value of r2) Å2
<r2> 34.137
(<r2>)1/2 5.843