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

using model chemistry: HSEh1PBE/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HSEh1PBE/6-31+G**
 hartrees
Energy at 0K-168.473675
Energy at 298.15K-168.474607
HF Energy-168.473675
Nuclear repulsion energy58.110619
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 HSEh1PBE/6-31+G**
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' 3829 3656 171.62      
2 A' 2413 2304 146.46      
3 A' 1224 1168 91.28      
4 A' 1128 1077 83.67      
5 A' 454 434 16.20      
6 A" 515 492 2.53      

Unscaled Zero Point Vibrational Energy (zpe) 4781.3 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 4565.2 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 HSEh1PBE/6-31+G**
ABC
22.67587 0.35355 0.34813

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.166 1.328 0.000
C2 0.000 0.179 0.000
O3 0.028 -1.116 0.000
H4 0.937 -1.445 0.000

Atom - Atom Distances (Å)
  N1 C2 O3 H4
N11.16052.45122.9840
C21.16051.29521.8750
O32.45121.29520.9664
H42.98401.87500.9664

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 173.025 C2 O3 H4 111.162
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.335      
2 C 0.467      
3 O -0.530      
4 H 0.398      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.560 -3.724 0.000 4.037
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.369 -3.225 0.000
y -3.225 -18.678 0.000
z 0.000 0.000 -17.005
Traceless
 xyz
x 2.472 -3.225 0.000
y -3.225 -2.491 0.000
z 0.000 0.000 0.019
Polar
3z2-r20.038
x2-y23.309
xy-3.225
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.035 -0.027 0.000
y -0.027 4.662 0.000
z 0.000 0.000 1.892


<r2> (average value of r2) Å2
<r2> 36.326
(<r2>)1/2 6.027