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

using model chemistry: mPW1PW91/STO-3G

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/STO-3G
 hartrees
Energy at 0K-166.351780
Energy at 298.15K-166.352515
Nuclear repulsion energy55.786027
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/STO-3G
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' 3771 3314 7.82      
2 A' 2424 2130 7.74      
3 A' 1413 1242 54.46      
4 A' 1050 923 21.23      
5 A' 414 364 10.49      
6 A" 446 392 0.45      

Unscaled Zero Point Vibrational Energy (zpe) 4758.8 cm-1
Scaled (by 0.8789) Zero Point Vibrational Energy (zpe) 4182.5 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/STO-3G
ABC
18.51651 0.32730 0.32161

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.110 1.384 0.000
C2 0.000 0.190 0.000
O3 -0.024 -1.174 0.000
H4 0.964 -1.435 0.000

Atom - Atom Distances (Å)
  N1 C2 O3 H4
N11.19932.55933.0169
C21.19931.36381.8893
O32.55931.36381.0220
H43.01691.88931.0220

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 173.716 C2 O3 H4 103.807
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.195      
2 C 0.125      
3 O -0.183      
4 H 0.253      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.672 -2.680 0.000 3.159
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.174 -2.056 0.000
y -2.056 -17.579 0.000
z 0.000 0.000 -14.905
Traceless
 xyz
x 3.068 -2.056 0.000
y -2.056 -3.539 0.000
z 0.000 0.000 0.471
Polar
3z2-r20.942
x2-y24.405
xy-2.056
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.978 -0.472 0.000
y -0.472 2.792 0.000
z 0.000 0.000 0.456


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