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

using model chemistry: PBE1PBE/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-168.459056
Energy at 298.15K 
HF Energy-168.459056
Nuclear repulsion energy60.910579
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/Def2TZVPP
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 3518 3518 269.58 25.67 0.22 0.36
2 Σ 2368 2368 436.83 41.80 0.09 0.16
3 Σ 1338 1338 136.53 21.24 0.25 0.40
4 Π 584 584 1.40 0.40 0.75 0.86
4 Π 584 584 1.40 0.40 0.75 0.86
5 Π 274 274 80.84 5.27 0.75 0.86
5 Π 274 274 80.84 5.27 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4469.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4469.7 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/Def2TZVPP
B
0.38872

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/Def2TZVPP

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 -0.017
C3 0.000 0.000 -1.171
H4 0.000 0.000 -2.233

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.18982.34383.4051
N21.18981.15402.2153
C32.34381.15401.0613
H43.40512.21531.0613

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/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.327      
2 N 0.437      
3 C -0.353      
4 H 0.244      


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 -3.128 3.128
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.753 0.000 0.000
y 0.000 -16.753 0.000
z 0.000 0.000 -13.890
Traceless
 xyz
x -1.432 0.000 0.000
y 0.000 -1.432 0.000
z 0.000 0.000 2.863
Polar
3z2-r25.727
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 1.961 0.000 0.000
y 0.000 1.961 0.000
z 0.000 0.000 6.035


<r2> (average value of r2) Å2
<r2> 34.084
(<r2>)1/2 5.838