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

using model chemistry: BLYP/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at BLYP/6-31G
 hartrees
Energy at 0K-168.593159
Energy at 298.15K-168.593995
Nuclear repulsion energy57.790274
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 BLYP/6-31G
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' 3675 3647 164.66      
2 A' 2243 2226 400.56      
3 A' 1241 1231 6.55      
4 A' 603 598 279.56      
5 A' 523 519 17.22      
6 A" 530 526 1.12      

Unscaled Zero Point Vibrational Energy (zpe) 4406.9 cm-1
Scaled (by 0.9924) Zero Point Vibrational Energy (zpe) 4373.4 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 BLYP/6-31G
ABC
42.14805 0.34876 0.34589

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.771 -1.035 0.000
N2 0.770 -0.896 0.000
C3 0.000 0.055 0.000
O4 -0.895 0.873 0.000

Atom - Atom Distances (Å)
  H1 N2 C3 O4
H11.01012.07913.2780
N21.01011.22392.4296
C32.07911.22391.2126
O43.27802.42961.2126

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 136.867 N2 C3 O4 171.410
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.330      
2 N -0.431      
3 C 0.413      
4 O -0.313      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.686 -0.657 0.000 2.765
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.234 0.028 0.000
y 0.028 -18.550 0.000
z 0.000 0.000 -16.442
Traceless
 xyz
x 4.261 0.028 0.000
y 0.028 -3.712 0.000
z 0.000 0.000 -0.550
Polar
3z2-r2-1.099
x2-y25.316
xy0.028
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 36.545
(<r2>)1/2 6.045