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All results from a given calculation for HNCO (Isocyanic acid)

using model chemistry: wB97X-D/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at wB97X-D/3-21G*
 hartrees
Energy at 0K-167.683079
Energy at 298.15K-167.683843
HF Energy-167.683079
Nuclear repulsion energy58.978123
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 wB97X-D/3-21G*
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' 3856 3654 333.93      
2 A' 2441 2313 461.29      
3 A' 1350 1279 9.96      
4 A' 604 572 11.75      
5 A' 374 355 323.42      
6 A" 605 573 2.33      

Unscaled Zero Point Vibrational Energy (zpe) 4614.4 cm-1
Scaled (by 0.9478) Zero Point Vibrational Energy (zpe) 4373.6 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 wB97X-D/3-21G*
ABC
75.23997 0.36082 0.35910

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.640 -1.144 0.000
N2 0.643 -0.973 0.000
C3 0.000 0.057 0.000
O4 -0.767 0.952 0.000

Atom - Atom Distances (Å)
  H1 N2 C3 O4
H11.01162.03243.1916
N21.01161.21382.3860
C32.03241.21381.1790
O43.19162.38601.1790

picture of Isocyanic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 N2 C3 131.709 N2 C3 O4 171.365
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.377      
2 N -0.724      
3 C 0.825      
4 O -0.478      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.172 -1.967 0.000 2.930
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.919 -1.750 0.000
y -1.750 -16.805 0.000
z 0.000 0.000 -16.063
Traceless
 xyz
x 2.515 -1.750 0.000
y -1.750 -1.814 0.000
z 0.000 0.000 -0.701
Polar
3z2-r2-1.403
x2-y22.886
xy-1.750
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.395 -1.123 0.000
y -1.123 3.556 0.000
z 0.000 0.000 0.835


<r2> (average value of r2) Å2
<r2> 35.383
(<r2>)1/2 5.948