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

using model chemistry: B3LYP/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 B3LYP/STO-3G
 hartrees
Energy at 0K-166.370221
Energy at 298.15K-166.370919
Nuclear repulsion energy55.446951
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 B3LYP/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' 3679 3283 5.51      
2 A' 2362 2108 6.23      
3 A' 1398 1247 51.15      
4 A' 1017 907 19.79      
5 A' 398 355 9.67      
6 A" 429 383 0.15      

Unscaled Zero Point Vibrational Energy (zpe) 4641.5 cm-1
Scaled (by 0.8924) Zero Point Vibrational Energy (zpe) 4142.0 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 B3LYP/STO-3G
ABC
18.21178 0.32337 0.31773

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.140 1.389 0.000
C2 0.000 0.192 0.000
O3 -0.002 -1.182 0.000
H4 0.997 -1.427 0.000

Atom - Atom Distances (Å)
  N1 C2 O3 H4
N11.20502.57443.0371
C21.20501.37391.9017
O32.57441.37391.0288
H43.03711.90171.0288

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 173.243 C2 O3 H4 103.715
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.194      
2 C 0.124      
3 O -0.175      
4 H 0.246      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.695 -2.638 0.000 3.136
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.124 -1.945 0.000
y -1.945 -17.615 0.000
z 0.000 0.000 -14.919
Traceless
 xyz
x 3.143 -1.945 0.000
y -1.945 -3.593 0.000
z 0.000 0.000 0.451
Polar
3z2-r20.902
x2-y24.491
xy-1.945
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.023 -0.526 0.000
y -0.526 2.832 0.000
z 0.000 0.000 0.467


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