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

using model chemistry: B1B95/CEP-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 B1B95/CEP-31G
 hartrees
Energy at 0K-31.987162
Energy at 298.15K-31.988019
Nuclear repulsion energy29.923677
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 B1B95/CEP-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' 3737 3578 120.66      
2 A' 2300 2202 96.33      
3 A' 1165 1115 83.99      
4 A' 1025 981 143.66      
5 A' 432 413 20.84      
6 A" 475 455 0.27      

Unscaled Zero Point Vibrational Energy (zpe) 4566.5 cm-1
Scaled (by 0.9575) Zero Point Vibrational Energy (zpe) 4372.4 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 B1B95/CEP-31G
ABC
23.64011 0.33519 0.33050

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/CEP-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.033 1.376 0.000
C2 0.000 0.184 0.000
O3 -0.070 -1.142 0.000
H4 0.797 -1.600 0.000

Atom - Atom Distances (Å)
  N1 C2 O3 H4
N11.19172.51783.0897
C21.19171.32821.9547
O32.51781.32820.9812
H43.08971.95470.9812

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 175.356 C2 O3 H4 114.817
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.272      
2 C -0.418      
3 O -0.273      
4 H 0.419      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.105 -3.505 0.000 4.089
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.030 -3.569 0.000
y -3.569 -19.252 0.000
z 0.000 0.000 -16.786
Traceless
 xyz
x 2.989 -3.569 0.000
y -3.569 -3.345 0.000
z 0.000 0.000 0.355
Polar
3z2-r20.711
x2-y24.222
xy-3.569
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.746 -0.285 0.000
y -0.285 4.346 0.000
z 0.000 0.000 1.423


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