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

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-168.563150
Energy at 298.15K-168.564050
Nuclear repulsion energy57.953284
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 B3PW91/6-31G*
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' 3736 3574 135.17      
2 A' 2402 2298 112.60      
3 A' 1253 1199 111.50      
4 A' 1117 1069 65.89      
5 A' 440 421 15.75      
6 A" 497 475 3.61      

Unscaled Zero Point Vibrational Energy (zpe) 4722.5 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 4518.0 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 B3PW91/6-31G*
ABC
22.17146 0.35185 0.34636

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.071 1.341 0.000
C2 0.000 0.178 0.000
O3 -0.151 -1.113 0.000
H4 0.717 -1.550 0.000

Atom - Atom Distances (Å)
  N1 C2 O3 H4
N11.16462.46372.9622
C21.16461.30001.8712
O32.46371.30000.9722
H42.96221.87120.9722

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 176.790 C2 O3 H4 110.041
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.405      
2 C 0.493      
3 O -0.557      
4 H 0.469      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.511 -3.634 0.000 3.936
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.938 -3.156 0.000
y -3.156 -17.893 0.000
z 0.000 0.000 -16.445
Traceless
 xyz
x 2.231 -3.156 0.000
y -3.156 -2.201 0.000
z 0.000 0.000 -0.030
Polar
3z2-r2-0.060
x2-y22.955
xy-3.156
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.658 -0.046 0.000
y -0.046 4.081 0.000
z 0.000 0.000 1.395


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