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

using model chemistry: MP2=FULL/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 MP2=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-168.369417
Energy at 298.15K 
HF Energy-167.690792
Nuclear repulsion energy60.444582
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 MP2=FULL/6-311+G(3df,2p)
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 3529 3326 282.80 37.42 0.21 0.34
2 Σ 2267 2137 583.06 18.24 0.01 0.02
3 Σ 1328 1252 66.86 43.57 0.20 0.33
4 Π 564 532 3.39 0.00 0.75 0.86
4 Π 564 532 3.39 0.00 0.75 0.86
5 Π 252i 238i 73.66 5.59 0.75 0.86
5 Π 252i 238i 73.66 5.59 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3873.8 cm-1
Scaled (by 0.9427) Zero Point Vibrational Energy (zpe) 3651.8 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 MP2=FULL/6-311+G(3df,2p)
B
0.38240

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311+G(3df,2p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.180
N2 0.000 0.000 -0.012
C3 0.000 0.000 -1.185
H4 0.000 0.000 -2.244

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.19152.36513.4235
N21.19151.17362.2320
C32.36511.17361.0584
H43.42352.23201.0584

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