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

using model chemistry: B2PLYP=FULLultrafine/3-21G

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 B2PLYP=FULLultrafine/3-21G
 hartrees
Energy at 0K-167.434595
Energy at 298.15K 
HF Energy-167.303880
Nuclear repulsion energy58.751583
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 B2PLYP=FULLultrafine/3-21G
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 3558 3558 213.24 33.82 0.23 0.37
2 Σ 2175 2175 190.02 9.34 0.19 0.31
3 Σ 1103 1103 56.07 19.19 0.34 0.51
4 Π 530 530 0.56 0.47 0.75 0.86
4 Π 530 530 0.56 0.47 0.75 0.86
5 Π 496 496 115.84 2.42 0.75 0.86
5 Π 496 496 115.84 2.42 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4442.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4442.9 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 B2PLYP=FULLultrafine/3-21G
B
0.36151

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/3-21G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.222
N2 0.000 0.000 -0.033
C3 0.000 0.000 -1.213
H4 0.000 0.000 -2.270

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.25522.43493.4925
N21.25521.17972.2373
C32.43491.17971.0576
H43.49252.23731.0576

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 B2PLYP=FULLultrafine/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.356      
2 N -0.164      
3 C 0.179      
4 H 0.341      


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 -2.986 2.986
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.571 0.000 0.000
y 0.000 -16.571 0.000
z 0.000 0.000 -13.958
Traceless
 xyz
x -1.306 0.000 0.000
y 0.000 -1.306 0.000
z 0.000 0.000 2.613
Polar
3z2-r25.226
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 0.920 0.000 0.000
y 0.000 0.920 0.000
z 0.000 0.000 5.371


<r2> (average value of r2) Å2
<r2> 35.737
(<r2>)1/2 5.978