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

using model chemistry: M06-2X/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 M06-2X/6-31G*
 hartrees
Energy at 0K-168.607770
Energy at 298.15K-168.608785
HF Energy-168.607770
Nuclear repulsion energy59.178422
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 M06-2X/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' 3727 3530 180.46      
2 A' 2414 2286 725.82      
3 A' 1383 1310 0.37      
4 A' 771 730 227.58      
5 A' 566 536 110.44      
6 A" 636 602 5.71      

Unscaled Zero Point Vibrational Energy (zpe) 4748.3 cm-1
Scaled (by 0.947) Zero Point Vibrational Energy (zpe) 4496.6 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 M06-2X/6-31G*
ABC
29.61885 0.36847 0.36394

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.368 -1.379 0.000
N2 0.401 -1.096 0.000
C3 0.000 0.050 0.000
O4 -0.522 1.094 0.000

Atom - Atom Distances (Å)
  H1 N2 C3 O4
H11.00751.97833.1130
N21.00751.21362.3765
C31.97831.21361.1677
O43.11302.37651.1677

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 125.668 N2 C3 O4 172.748
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.389      
2 N -0.666      
3 C 0.682      
4 O -0.406      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.135 -0.844 0.000 2.296
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.313 -1.389 0.000
y -1.389 -18.549 0.000
z 0.000 0.000 -16.388
Traceless
 xyz
x 4.156 -1.389 0.000
y -1.389 -3.699 0.000
z 0.000 0.000 -0.457
Polar
3z2-r2-0.914
x2-y25.237
xy-1.389
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.048 -1.127 0.000
y -1.127 3.898 0.000
z 0.000 0.000 1.290


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000