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

using model chemistry: mPW1PW91/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31G
 hartrees
Energy at 0K-168.518984
Energy at 298.15K-168.519809
Nuclear repulsion energy57.415841
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 mPW1PW91/6-31G
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' 3687 3490 119.48      
2 A' 2359 2233 89.31      
3 A' 1219 1154 102.72      
4 A' 1056 1000 109.07      
5 A' 409 387 19.26      
6 A" 448 424 0.76      

Unscaled Zero Point Vibrational Energy (zpe) 4588.7 cm-1
Scaled (by 0.9466) Zero Point Vibrational Energy (zpe) 4343.7 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 mPW1PW91/6-31G
ABC
23.89911 0.34422 0.33933

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.004 1.357 0.000
C2 0.000 0.184 0.000
O3 -0.092 -1.126 0.000
H4 0.763 -1.596 0.000

Atom - Atom Distances (Å)
  N1 C2 O3 H4
N11.17282.48433.0508
C21.17281.31321.9367
O32.48431.31320.9755
H43.05081.93670.9755

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 175.794 C2 O3 H4 114.804
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.204      
2 C 0.350      
3 O -0.588      
4 H 0.441      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.992 -3.433 0.000 3.969
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.014 -3.489 0.000
y -3.489 -18.677 0.000
z 0.000 0.000 -16.598
Traceless
 xyz
x 2.623 -3.489 0.000
y -3.489 -2.870 0.000
z 0.000 0.000 0.247
Polar
3z2-r20.494
x2-y23.662
xy-3.489
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.511 -0.221 0.000
y -0.221 4.199 0.000
z 0.000 0.000 1.182


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