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All results from a given calculation for HOCN (cyanic acid)

using model chemistry: TPSSh/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-168.651140
Energy at 298.15K-168.652090
HF Energy-168.651140
Nuclear repulsion energy57.968945
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 TPSSh/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3740 3609 124.47      
2 A' 2363 2280 107.36      
3 A' 1245 1201 89.53      
4 A' 1094 1055 65.71      
5 A' 468 451 13.74      
6 A" 526 508 3.05      

Unscaled Zero Point Vibrational Energy (zpe) 4716.9 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 4551.8 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 TPSSh/6-31G(2df,p)
ABC
22.16190 0.35195 0.34644

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.003 1.342 0.000
C2 0.000 0.178 0.000
O3 -0.096 -1.119 0.000
H4 0.792 -1.509 0.000

Atom - Atom Distances (Å)
  N1 C2 O3 H4
N11.16352.46302.9595
C21.16351.30131.8639
O32.46301.30130.9702
H42.95951.86390.9702

picture of cyanic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 O3 175.606 C2 O3 H4 109.422
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability