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

using model chemistry: B3LYP/aug-cc-pVQZ

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 B3LYP/aug-cc-pVQZ
 hartrees
Energy at 0K-168.657359
Energy at 298.15K 
HF Energy-168.657359
Nuclear repulsion energy60.668724
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 B3LYP/aug-cc-pVQZ
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 3495 3386 264.42 30.97 0.22 0.36
2 Σ 2320 2248 427.07 50.16 0.06 0.11
3 Σ 1289 1249 141.70 23.81 0.19 0.32
4 Π 564 546 2.50 0.21 0.75 0.86
4 Π 564 546 2.50 0.21 0.75 0.86
5 Π 243 235 70.91 4.62 0.75 0.86
5 Π 243 235 70.91 4.62 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4358.6 cm-1
Scaled (by 0.9689) Zero Point Vibrational Energy (zpe) 4223.1 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 B3LYP/aug-cc-pVQZ
B
0.38569

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVQZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.179
N2 0.000 0.000 -0.021
C3 0.000 0.000 -1.175
H4 0.000 0.000 -2.234

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.19942.35363.4126
N21.19941.15412.2132
C32.35361.15411.0591
H43.41262.21321.0591

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 B3LYP/aug-cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.491      
2 N 0.099      
3 C -0.131      
4 H 0.523      


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 -3.227 3.227
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.914 0.000 0.000
y 0.000 -16.914 0.000
z 0.000 0.000 -14.255
Traceless
 xyz
x -1.329 0.000 0.000
y 0.000 -1.329 0.000
z 0.000 0.000 2.659
Polar
3z2-r25.318
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 2.567 0.000 0.000
y 0.000 2.567 0.000
z 0.000 0.000 6.427


<r2> (average value of r2) Å2
<r2> 34.400
(<r2>)1/2 5.865