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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-32.024677
Energy at 298.15K-32.025514
Nuclear repulsion energy29.880137
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' 3631 3538 87.48      
2 A' 2241 2184 84.26      
3 A' 1180 1150 108.48      
4 A' 994 969 94.13      
5 A' 416 405 18.50      
6 A" 458 446 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 4459.0 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 4345.3 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
23.12247 0.33418 0.32942

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 -0.050 1.375 0.000
C2 0.000 0.189 0.000
O3 -0.059 -1.147 0.000
H4 0.822 -1.582 0.000

Atom - Atom Distances (Å)
  N1 C2 O3 H4
N11.18712.52223.0828
C21.18711.33751.9523
O32.52221.33750.9824
H43.08281.95230.9824

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 175.051 C2 O3 H4 113.733
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 0.171      
2 C -0.269      
3 O -0.312      
4 H 0.410      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.097 -3.361 0.000 3.962
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.087 -3.459 0.000
y -3.459 -19.233 0.000
z 0.000 0.000 -16.939
Traceless
 xyz
x 2.999 -3.459 0.000
y -3.459 -3.220 0.000
z 0.000 0.000 0.221
Polar
3z2-r20.442
x2-y24.146
xy-3.459
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.848 -0.329 0.000
y -0.329 4.541 0.000
z 0.000 0.000 1.529


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