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

using model chemistry: B3LYP/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 B3LYP/CEP-31G*
 hartrees
Energy at 0K-32.078954
Energy at 298.15K-32.079823
Nuclear repulsion energy30.183556
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-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3744 3616 124.18      
2 A' 2357 2277 137.61      
3 A' 1245 1203 111.84      
4 A' 1080 1043 61.81      
5 A' 426 411 13.86      
6 A" 482 465 0.99      

Unscaled Zero Point Vibrational Energy (zpe) 4667.0 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 4506.9 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-31G*
ABC
21.59144 0.34201 0.33667

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.052 1.361 0.000
C2 0.000 0.180 0.000
O3 -0.139 -1.132 0.000
H4 0.747 -1.547 0.000

Atom - Atom Distances (Å)
  N1 C2 O3 H4
N11.18222.50022.9901
C21.18221.31911.8819
O32.50021.31910.9787
H42.99011.88190.9787

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 176.479 C2 O3 H4 109.066
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.264      
2 C -0.439      
3 O -0.267      
4 H 0.442      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.581 -3.597 0.000 3.929
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.166 -3.213 0.000
y -3.213 -18.205 0.000
z 0.000 0.000 -16.798
Traceless
 xyz
x 2.335 -3.213 0.000
y -3.213 -2.223 0.000
z 0.000 0.000 -0.112
Polar
3z2-r2-0.224
x2-y23.039
xy-3.213
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.940 -0.091 0.000
y -0.091 4.299 0.000
z 0.000 0.000 1.669


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