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

using model chemistry: wB97X-D/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 wB97X-D/cc-pVDZ
 hartrees
Energy at 0K-168.630216
Energy at 298.15K-168.631226
HF Energy-168.630216
Nuclear repulsion energy59.111756
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-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' 3766 3587 184.92      
2 A' 2371 2259 810.13      
3 A' 1358 1294 0.26      
4 A' 750 715 213.74      
5 A' 564 537 109.06      
6 A" 624 594 3.70      

Unscaled Zero Point Vibrational Energy (zpe) 4716.4 cm-1
Scaled (by 0.9526) Zero Point Vibrational Energy (zpe) 4492.8 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-pVDZ
ABC
30.17335 0.36742 0.36300

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.683 -0.994 0.000
N2 0.678 -0.948 0.000
C3 0.000 0.061 0.000
O4 -0.803 0.908 0.000

Atom - Atom Distances (Å)
  H1 N2 C3 O4
H11.00621.98623.1298
N21.00621.21572.3741
C31.98621.21571.1669
O43.12982.37411.1669

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 126.483 N2 C3 O4 170.373
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.344      
2 N -0.541      
3 C 0.632      
4 O -0.435      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.205 -0.845 0.000 2.362
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.583 -1.236 0.000
y -1.236 -19.220 0.000
z 0.000 0.000 -16.794
Traceless
 xyz
x 4.424 -1.236 0.000
y -1.236 -4.032 0.000
z 0.000 0.000 -0.392
Polar
3z2-r2-0.785
x2-y25.637
xy-1.236
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.421 -1.255 0.000
y -1.255 4.580 0.000
z 0.000 0.000 1.790


<r2> (average value of r2) Å2
<r2> 35.472
(<r2>)1/2 5.956