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

using model chemistry: PBEPBE/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/aug-cc-pVTZ
 hartrees
Energy at 0K-168.524820
Energy at 298.15K-168.525721
Nuclear repulsion energy57.774592
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 PBEPBE/aug-cc-pVTZ
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' 3643 3619 126.89      
2 A' 2288 2273 116.15      
3 A' 1204 1196 77.25      
4 A' 1066 1059 77.98      
5 A' 440 438 12.48      
6 A" 495 492 0.97      

Unscaled Zero Point Vibrational Energy (zpe) 4567.7 cm-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 4538.1 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 PBEPBE/aug-cc-pVTZ
ABC
22.10349 0.34974 0.34430

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.018 1.346 0.000
C2 0.000 0.179 0.000
O3 -0.112 -1.120 0.000
H4 0.772 -1.536 0.000

Atom - Atom Distances (Å)
  N1 C2 O3 H4
N11.16772.47032.9791
C21.16771.30411.8802
O32.47031.30410.9765
H42.97911.88020.9765

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 175.945 C2 O3 H4 110.240
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.226      
2 C 0.135      
3 O -0.116      
4 H 0.207      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.426 -3.678 0.000 3.944
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.373 -2.863 0.000
y -2.863 -18.667 0.000
z 0.000 0.000 -17.088
Traceless
 xyz
x 2.504 -2.863 0.000
y -2.863 -2.437 0.000
z 0.000 0.000 -0.067
Polar
3z2-r2-0.135
x2-y23.294
xy-2.863
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.788 -0.125 0.000
y -0.125 5.031 0.000
z 0.000 0.000 2.648


<r2> (average value of r2) Å2
<r2> 36.626
(<r2>)1/2 6.052