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

using model chemistry: PBE1PBE/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 PBE1PBE/6-31G*
 hartrees
Energy at 0K-168.444173
Energy at 298.15K-168.445086
HF Energy-168.444173
Nuclear repulsion energy58.055484
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 PBE1PBE/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' 3764 3577 143.06      
2 A' 2425 2304 116.49      
3 A' 1260 1198 112.70      
4 A' 1130 1074 65.64      
5 A' 446 424 16.21      
6 A" 504 479 4.22      

Unscaled Zero Point Vibrational Energy (zpe) 4764.5 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 4527.7 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 PBE1PBE/6-31G*
ABC
22.19132 0.35313 0.34760

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.081 1.338 0.000
C2 0.000 0.178 0.000
O3 -0.159 -1.110 0.000
H4 0.705 -1.551 0.000

Atom - Atom Distances (Å)
  N1 C2 O3 H4
N11.16272.45942.9551
C21.16271.29751.8670
O32.45941.29750.9707
H42.95511.86700.9707

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 176.959 C2 O3 H4 109.955
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.398      
2 C 0.484      
3 O -0.559      
4 H 0.473      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.484 -3.649 0.000 3.939
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.007 -3.178 0.000
y -3.178 -17.884 0.000
z 0.000 0.000 -16.477
Traceless
 xyz
x 2.173 -3.178 0.000
y -3.178 -2.142 0.000
z 0.000 0.000 -0.031
Polar
3z2-r2-0.061
x2-y22.877
xy-3.178
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.653 -0.025 0.000
y -0.025 4.050 0.000
z 0.000 0.000 1.392


<r2> (average value of r2) Å2
<r2> 36.001
(<r2>)1/2 6.000