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

using model chemistry: MP2=FULL/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 MP2=FULL/cc-pVTZ
 hartrees
Energy at 0K-168.408629
Energy at 298.15K-168.409536
Nuclear repulsion energy57.943262
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/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' 3825 3631 174.66      
2 A' 2282 2167 82.18      
3 A' 1248 1185 92.65      
4 A' 1089 1034 67.74      
5 A' 440 417 14.31      
6 A" 495 470 2.50      

Unscaled Zero Point Vibrational Energy (zpe) 4689.0 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 4451.8 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/cc-pVTZ
ABC
22.25289 0.35145 0.34598

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.067 1.342 0.000
C2 0.000 0.176 0.000
O3 -0.149 -1.115 0.000
H4 0.720 -1.534 0.000

Atom - Atom Distances (Å)
  N1 C2 O3 H4
N11.16852.46652.9500
C21.16851.29901.8556
O32.46651.29900.9647
H42.95001.85560.9647

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 176.718 C2 O3 H4 109.225
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability