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

using model chemistry: B3LYP/CEP-121G*

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/CEP-121G*
 hartrees
Energy at 0K-32.089106
Energy at 298.15K-32.089985
Nuclear repulsion energy30.384899
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/CEP-121G*
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' 3727 3613 112.32      
2 A' 2322 2251 113.62      
3 A' 1253 1215 115.47      
4 A' 1070 1037 60.43      
5 A' 427 414 14.64      
6 A" 485 470 1.62      

Unscaled Zero Point Vibrational Energy (zpe) 4641.8 cm-1
Scaled (by 0.9694) Zero Point Vibrational Energy (zpe) 4499.7 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/CEP-121G*
ABC
21.84548 0.34670 0.34129

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.056 1.349 0.000
C2 0.000 0.183 0.000
O3 -0.142 -1.125 0.000
H4 0.738 -1.546 0.000

Atom - Atom Distances (Å)
  N1 C2 O3 H4
N11.16782.48222.9742
C21.16781.31551.8795
O32.48221.31550.9750
H42.97421.87950.9750

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 176.588 C2 O3 H4 109.385
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.057      
2 C -0.019      
3 O -0.384      
4 H 0.460      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.575 -3.608 0.000 3.937
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.166 -3.225 0.000
y -3.225 -18.248 0.000
z 0.000 0.000 -16.803
Traceless
 xyz
x 2.359 -3.225 0.000
y -3.225 -2.264 0.000
z 0.000 0.000 -0.096
Polar
3z2-r2-0.191
x2-y23.082
xy-3.225
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.942 -0.070 0.000
y -0.070 4.352 0.000
z 0.000 0.000 1.707


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