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

using model chemistry: wB97X-D/TZVP

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/TZVP
 hartrees
Energy at 0K-168.685613
Energy at 298.15K-168.686630
HF Energy-168.685613
Nuclear repulsion energy59.538200
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/TZVP
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' 3756 3587 198.31      
2 A' 2390 2282 816.47      
3 A' 1372 1310 0.64      
4 A' 735 702 189.19      
5 A' 565 539 144.23      
6 A" 644 615 6.83      

Unscaled Zero Point Vibrational Energy (zpe) 4730.4 cm-1
Scaled (by 0.955) Zero Point Vibrational Energy (zpe) 4517.5 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 wB97X-D/TZVP
ABC
32.66829 0.37221 0.36801

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.493 -1.244 0.000
N2 0.510 -1.040 0.000
C3 0.000 0.055 0.000
O4 -0.633 1.025 0.000

Atom - Atom Distances (Å)
  H1 N2 C3 O4
H11.00351.97873.1092
N21.00351.20752.3600
C31.97871.20751.1584
O43.10922.36001.1584

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 126.745 N2 C3 O4 171.868
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.270      
2 N -0.416      
3 C 0.442      
4 O -0.297      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.070 -1.124 0.000 2.356
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.857 -1.740 0.000
y -1.740 -18.661 0.000
z 0.000 0.000 -16.579
Traceless
 xyz
x 3.762 -1.740 0.000
y -1.740 -3.443 0.000
z 0.000 0.000 -0.319
Polar
3z2-r2-0.638
x2-y24.804
xy-1.740
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.093 -1.016 0.000
y -1.016 4.588 0.000
z 0.000 0.000 1.626


<r2> (average value of r2) Å2
<r2> 35.059
(<r2>)1/2 5.921