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

using model chemistry: CCD/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCD/cc-pVTZ
 hartrees
Energy at 0K-168.362293
Energy at 298.15K-168.363228
Nuclear repulsion energy58.209532
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 CCD/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 A' 3865 3608 159.01      
2 A' 2413 2253 99.88      
3 A' 1294 1208 97.18      
4 A' 1107 1034 62.82      
5 A' 452 422 14.56      
6 A" 509 475 5.50      

Unscaled Zero Point Vibrational Energy (zpe) 4819.3 cm-1
Scaled (by 0.9337) Zero Point Vibrational Energy (zpe) 4499.7 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 CCD/cc-pVTZ
ABC
22.33009 0.35448 0.34894

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.100 1.332 0.000
C2 0.000 0.182 0.000
O3 -0.173 -1.109 0.000
H4 0.684 -1.544 0.000

Atom - Atom Distances (Å)
  N1 C2 O3 H4
N11.15422.45542.9341
C21.15421.30191.8563
O32.45541.30190.9618
H42.93411.85630.9618

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 177.337 C2 O3 H4 109.256
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability