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

using model chemistry: wB97X-D/6-311G**

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/6-311G**
 hartrees
Energy at 0K-168.670934
Energy at 298.15K-168.671963
HF Energy-168.670934
Nuclear repulsion energy59.479514
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/6-311G**
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' 3738 3575 168.76      
2 A' 2392 2288 738.85      
3 A' 1363 1303 0.31      
4 A' 771 738 196.29      
5 A' 564 539 117.03      
6 A" 644 616 6.40      

Unscaled Zero Point Vibrational Energy (zpe) 4735.6 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 4529.6 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/6-311G**
ABC
29.92829 0.37217 0.36760

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.514 -1.211 0.000
N2 0.525 -1.034 0.000
C3 0.000 0.055 0.000
O4 -0.649 1.015 0.000

Atom - Atom Distances (Å)
  H1 N2 C3 O4
H11.00431.97343.1035
N21.00431.20872.3612
C31.97341.20871.1587
O43.10352.36121.1587

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 125.931 N2 C3 O4 171.708
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.262      
2 N -0.473      
3 C 0.484      
4 O -0.274      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.994 -1.001 0.000 2.231
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.648 -1.657 0.000
y -1.657 -18.456 0.000
z 0.000 0.000 -16.370
Traceless
 xyz
x 3.765 -1.657 0.000
y -1.657 -3.447 0.000
z 0.000 0.000 -0.317
Polar
3z2-r2-0.634
x2-y24.808
xy-1.657
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.969 -0.945 0.000
y -0.945 4.135 0.000
z 0.000 0.000 1.446


<r2> (average value of r2) Å2
<r2> 34.921
(<r2>)1/2 5.909