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

using model chemistry: B3LYP/TZVP

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/TZVP
 hartrees
Energy at 0K-168.703084
Energy at 298.15K-168.704012
HF Energy-168.703084
Nuclear repulsion energy58.245698
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/TZVP
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' 3750 3621 151.00      
2 A' 2383 2300 130.75      
3 A' 1218 1176 84.93      
4 A' 1098 1060 85.98      
5 A' 453 437 16.06      
6 A" 512 494 3.68      

Unscaled Zero Point Vibrational Energy (zpe) 4707.2 cm-1
Scaled (by 0.9654) Zero Point Vibrational Energy (zpe) 4544.4 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 B3LYP/TZVP
ABC
22.61398 0.35525 0.34975

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.114 1.329 0.000
C2 0.000 0.182 0.000
O3 -0.011 -1.114 0.000
H4 0.886 -1.475 0.000

Atom - Atom Distances (Å)
  N1 C2 O3 H4
N11.15252.44502.9763
C21.15251.29611.8787
O32.44501.29610.9675
H42.97631.87870.9675

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 173.839 C2 O3 H4 111.363
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.211      
2 C 0.181      
3 O -0.298      
4 H 0.328      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.518 -3.676 0.000 3.977
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.448 -3.244 0.000
y -3.244 -18.784 0.000
z 0.000 0.000 -16.917
Traceless
 xyz
x 2.403 -3.244 0.000
y -3.244 -2.601 0.000
z 0.000 0.000 0.199
Polar
3z2-r20.398
x2-y23.336
xy-3.244
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.978 -0.027 0.000
y -0.027 4.502 0.000
z 0.000 0.000 1.792


<r2> (average value of r2) Å2
<r2> 36.232
(<r2>)1/2 6.019