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

using model chemistry: B97D3/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 B97D3/TZVP
 hartrees
Energy at 0K-168.649192
Energy at 298.15K-168.650194
HF Energy-168.649192
Nuclear repulsion energy58.985731
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 B97D3/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' 3639 3587 140.71      
2 A' 2306 2273 613.07      
3 A' 1304 1285 0.83      
4 A' 755 744 201.90      
5 A' 562 554 74.13      
6 A" 613 605 1.76      

Unscaled Zero Point Vibrational Energy (zpe) 4589.7 cm-1
Scaled (by 0.9856) Zero Point Vibrational Energy (zpe) 4523.6 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 B97D3/TZVP
ABC
30.10088 0.36591 0.36151

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.469 -1.286 0.000
N2 0.486 -1.064 0.000
C3 0.000 0.051 0.000
O4 -0.609 1.054 0.000

Atom - Atom Distances (Å)
  H1 N2 C3 O4
H11.00751.98613.1291
N21.00751.21602.3839
C31.98611.21601.1733
O43.12912.38391.1733

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 126.304 N2 C3 O4 172.295
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.250      
2 N -0.363      
3 C 0.372      
4 O -0.259      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.133 -0.748 0.000 2.261
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.512 -0.918 0.000
y -0.918 -18.970 0.000
z 0.000 0.000 -16.623
Traceless
 xyz
x 4.284 -0.918 0.000
y -0.918 -3.902 0.000
z 0.000 0.000 -0.382
Polar
3z2-r2-0.763
x2-y25.457
xy-0.918
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.562 -1.364 0.000
y -1.364 4.318 0.000
z 0.000 0.000 1.678


<r2> (average value of r2) Å2
<r2> 35.475
(<r2>)1/2 5.956