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

using model chemistry: CCSD=FULL/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 CCSD=FULL/cc-pVQZ
 hartrees
Energy at 0K-168.426716
Energy at 298.15K 
HF Energy-167.708883
Nuclear repulsion energy60.855585
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 CCSD=FULL/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 3531 3531 266.67      
2 Σ 2353 2353 426.19      
3 Σ 1298 1298 167.93      
4 Xpi 586 586 1.59      
4 Xpi 586 586 1.59      
5 Xpi 315 315 68.00      
5 Xpi 315 315 68.00      

Unscaled Zero Point Vibrational Energy (zpe) 4491.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4491.2 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 CCSD=FULL/cc-pVQZ
B
0.38811

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD=FULL/cc-pVQZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.175
N2 0.000 0.000 -0.022
C3 0.000 0.000 -1.171
H4 0.000 0.000 -2.227

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.19682.34613.4025
N21.19681.14922.2057
C32.34611.14921.0565
H43.40252.20571.0565

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