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

using model chemistry: HF/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 HF/6-31G(2df,p)
 hartrees
Energy at 0K-167.745567
Energy at 298.15K-167.746644
Nuclear repulsion energy59.194209
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/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' 4109 3720 207.90      
2 A' 2635 2386 168.74      
3 A' 1368 1239 125.77      
4 A' 1196 1083 56.27      
5 A' 540 489 20.94      
6 A" 609 552 18.18      

Unscaled Zero Point Vibrational Energy (zpe) 5228.1 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 4734.1 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/6-31G(2df,p)
ABC
23.51176 0.36620 0.36058

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.147 1.304 0.000
C2 0.000 0.183 0.000
O3 -0.205 -1.084 0.000
H4 0.612 -1.560 0.000

Atom - Atom Distances (Å)
  N1 C2 O3 H4
N11.13042.41382.9016
C21.13041.28371.8477
O32.41381.28370.9462
H42.90161.84770.9462

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 178.279 C2 O3 H4 111.004
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.296      
2 C 0.394      
3 O -0.485      
4 H 0.386      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.187 -3.822 0.000 4.002
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.333 -3.245 0.000
y -3.245 -17.989 0.000
z 0.000 0.000 -16.457
Traceless
 xyz
x 1.890 -3.245 0.000
y -3.245 -2.093 0.000
z 0.000 0.000 0.204
Polar
3z2-r20.408
x2-y22.655
xy-3.245
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.885 0.073 0.000
y 0.073 3.748 0.000
z 0.000 0.000 1.702


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