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

using model chemistry: wB97X-D/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-168.689018
Energy at 298.15K-168.690063
HF Energy-168.689018
Nuclear repulsion energy59.519210
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/cc-pVTZ
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' 3726 3562 161.45      
2 A' 2371 2267 763.56      
3 A' 1358 1298 0.11      
4 A' 796 761 198.83      
5 A' 569 544 101.64      
6 A" 647 618 5.36      

Unscaled Zero Point Vibrational Energy (zpe) 4733.4 cm-1
Scaled (by 0.956) Zero Point Vibrational Energy (zpe) 4525.1 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/cc-pVTZ
ABC
29.27425 0.37288 0.36819

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.573 -1.126 0.000
N2 0.578 -1.004 0.000
C3 0.000 0.056 0.000
O4 -0.702 0.977 0.000

Atom - Atom Distances (Å)
  H1 N2 C3 O4
H11.00271.96763.0983
N21.00271.20762.3589
C31.96761.20761.1582
O43.09832.35891.1582

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 125.547 N2 C3 O4 171.263
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.193      
2 N -0.262      
3 C 0.276      
4 O -0.207      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.878 -0.980 0.000 2.119
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.766 -1.569 0.000
y -1.569 -18.341 0.000
z 0.000 0.000 -16.465
Traceless
 xyz
x 3.637 -1.569 0.000
y -1.569 -3.225 0.000
z 0.000 0.000 -0.411
Polar
3z2-r2-0.823
x2-y24.575
xy-1.569
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.350 -0.896 0.000
y -0.896 4.363 0.000
z 0.000 0.000 1.851


<r2> (average value of r2) Å2
<r2> 34.888
(<r2>)1/2 5.907