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

using model chemistry: B97D3/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B97D3/6-31+G**
 hartrees
Energy at 0K-168.592580
Energy at 298.15K-168.593567
HF Energy-168.592580
Nuclear repulsion energy58.564868
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 B97D3/6-31+G**
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 3577 132.26      
2 A' 2288 2248 620.79      
3 A' 1292 1270 0.42      
4 A' 773 760 208.00      
5 A' 554 544 59.83      
6 A" 596 586 0.35      

Unscaled Zero Point Vibrational Energy (zpe) 4571.3 cm-1
Scaled (by 0.9828) Zero Point Vibrational Energy (zpe) 4492.6 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 B97D3/6-31+G**
ABC
28.21085 0.36114 0.35657

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.606 -1.107 0.000
N2 0.599 -1.016 0.000
C3 0.000 0.054 0.000
O4 -0.725 0.987 0.000

Atom - Atom Distances (Å)
  H1 N2 C3 O4
H11.01121.98183.1340
N21.01121.22632.4017
C31.98181.22631.1822
O43.13402.40171.1822

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 126.424 N2 C3 O4 168.540
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.324      
2 N -0.502      
3 C 0.580      
4 O -0.402      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.218 -0.456 0.000 2.264
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.432 -0.316 0.000
y -0.316 -19.341 0.000
z 0.000 0.000 -16.864
Traceless
 xyz
x 4.670 -0.316 0.000
y -0.316 -4.193 0.000
z 0.000 0.000 -0.477
Polar
3z2-r2-0.955
x2-y25.909
xy-0.316
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.001 -1.564 0.000
y -1.564 4.278 0.000
z 0.000 0.000 1.881


<r2> (average value of r2) Å2
<r2> 35.906
(<r2>)1/2 5.992