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

using model chemistry: QCISD/daug-cc-pVTZ

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 QCISD/daug-cc-pVTZ
 hartrees
Energy at 0K-168.305561
Energy at 298.15K 
HF Energy-167.698037
Nuclear repulsion energy60.404025
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 QCISD/daug-cc-pVTZ
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 3505 3505 258.62      
2 Σ 2315 2315 376.46      
3 Σ 1250 1250 146.47      
4 Xpi 559 559 4.05      
4 Xpi 559 559 4.05      
5 Xpi 260 260 61.05      
5 Xpi 260 260 61.05      

Unscaled Zero Point Vibrational Energy (zpe) 4354.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4354.0 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 QCISD/daug-cc-pVTZ
B
0.38238

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/daug-cc-pVTZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.185
N2 0.000 0.000 -0.023
C3 0.000 0.000 -1.179
H4 0.000 0.000 -2.239

Atom - Atom Distances (Å)
  O1 N2 C3 H4
O11.20832.36403.4243
N21.20831.15572.2159
C32.36401.15571.0603
H43.42432.21591.0603

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