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

using model chemistry: TPSSh/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 TPSSh/cc-pVTZ
 hartrees
Energy at 0K-168.703531
Energy at 298.15K-168.704460
HF Energy-168.703531
Nuclear repulsion energy58.105093
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/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' 3733 3615 133.75      
2 A' 2353 2279 119.31      
3 A' 1246 1206 90.38      
4 A' 1088 1053 72.34      
5 A' 453 439 13.35      
6 A" 509 493 1.84      

Unscaled Zero Point Vibrational Energy (zpe) 4690.6 cm-1
Scaled (by 0.9683) Zero Point Vibrational Energy (zpe) 4541.9 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/cc-pVTZ
ABC
22.38404 0.35358 0.34809

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.228 1.316 0.000
C2 0.000 0.182 0.000
O3 0.075 -1.113 0.000
H4 0.998 -1.402 0.000

Atom - Atom Distances (Å)
  N1 C2 O3 H4
N11.15592.44702.9812
C21.15591.29721.8725
O32.44701.29720.9676
H42.98121.87250.9676

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 171.923 C2 O3 H4 110.688
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.146      
2 C 0.082      
3 O -0.188      
4 H 0.252      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.434 -3.678 0.000 3.948
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.193 -0.108 0.000
y -0.108 4.412 0.000
z 0.000 0.000 1.985


<r2> (average value of r2) Å2
<r2> 36.105
(<r2>)1/2 6.009