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

using model chemistry: mPW1PW91/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-168.603086
Energy at 298.15K-168.604022
Nuclear repulsion energy58.105226
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/cc-pVDZ
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' 3789 3631 160.84      
2 A' 2421 2320 124.03      
3 A' 1262 1210 92.94      
4 A' 1125 1078 64.12      
5 A' 453 434 14.25      
6 A" 513 491 3.84      

Unscaled Zero Point Vibrational Energy (zpe) 4780.9 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 4581.5 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/cc-pVDZ
ABC
21.89089 0.35389 0.34826

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.106 1.334 0.000
C2 0.000 0.177 0.000
O3 -0.179 -1.107 0.000
H4 0.686 -1.547 0.000

Atom - Atom Distances (Å)
  N1 C2 O3 H4
N11.16232.45822.9387
C21.16231.29651.8550
O32.45821.29650.9699
H42.93871.85500.9699

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 177.325 C2 O3 H4 109.012
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.193      
2 C 0.114      
3 O -0.127      
4 H 0.206      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.320 -3.641 0.000 3.873
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.106 -3.035 0.000
y -3.035 -17.695 0.000
z 0.000 0.000 -16.406
Traceless
 xyz
x 1.944 -3.035 0.000
y -3.035 -1.939 0.000
z 0.000 0.000 -0.005
Polar
3z2-r2-0.010
x2-y22.588
xy-3.035
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.733 0.008 0.000
y 0.008 3.956 0.000
z 0.000 0.000 1.479


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