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

using model chemistry: HF/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/STO-3G
 hartrees
Energy at 0K-165.511976
Energy at 298.15K-165.512840
Nuclear repulsion energy56.921610
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 HF/STO-3G
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' 4212 3439 12.01      
2 A' 2748 2243 5.13      
3 A' 1574 1285 57.28      
4 A' 1128 921 11.06      
5 A' 478 390 14.31      
6 A" 509 416 8.67      

Unscaled Zero Point Vibrational Energy (zpe) 5324.3 cm-1
Scaled (by 0.8165) Zero Point Vibrational Energy (zpe) 4347.3 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 HF/STO-3G
ABC
19.98412 0.33906 0.33341

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.027 1.358 0.000
C2 0.000 0.199 0.000
O3 -0.124 -1.150 0.000
H4 0.806 -1.498 0.000

Atom - Atom Distances (Å)
  N1 C2 O3 H4
N11.15862.51262.9600
C21.15861.35551.8789
O32.51261.35550.9929
H42.96001.87890.9929

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 176.065 C2 O3 H4 105.235
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.200      
2 C 0.176      
3 O -0.226      
4 H 0.249      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.464 -2.581 0.000 2.967
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.587 -2.486 0.000
y -2.486 -17.996 0.000
z 0.000 0.000 -14.795
Traceless
 xyz
x 2.809 -2.486 0.000
y -2.486 -3.804 0.000
z 0.000 0.000 0.996
Polar
3z2-r21.992
x2-y24.409
xy-2.486
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.845 -0.277 0.000
y -0.277 2.561 0.000
z 0.000 0.000 0.415


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000