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

using model chemistry: B3LYP/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/aug-cc-pVDZ
 hartrees
Energy at 0K-168.710288
Energy at 298.15K-168.711327
Nuclear repulsion energy58.940383
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 B3LYP/aug-cc-pVDZ
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' 3657 3549 145.49      
2 A' 2311 2242 732.11      
3 A' 1321 1282 0.25      
4 A' 821 796 204.97      
5 A' 568 551 68.62      
6 A" 626 608 2.02      

Unscaled Zero Point Vibrational Energy (zpe) 4651.6 cm-1
Scaled (by 0.9704) Zero Point Vibrational Energy (zpe) 4513.9 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 B3LYP/aug-cc-pVDZ
ABC
27.71342 0.36602 0.36125

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.441 -1.291 0.000
N2 0.451 -1.084 0.000
C3 0.000 0.051 0.000
O4 -0.575 1.072 0.000

Atom - Atom Distances (Å)
  H1 N2 C3 O4
H11.01121.96913.1058
N21.01121.22102.3870
C31.96911.22101.1714
O43.10582.38701.1714

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 123.530 N2 C3 O4 172.296
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H -0.039 0.000    
2 N 0.077 0.000    
3 C 0.181 0.000    
4 O -0.219 0.000    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.950 -0.748 0.000 2.088
CHELPG 0.000 0.000 0.000 0.000
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.909 -0.880 0.000
y -0.880 -19.218 0.000
z 0.000 0.000 -16.931
Traceless
 xyz
x 4.165 -0.880 0.000
y -0.880 -3.797 0.000
z 0.000 0.000 -0.368
Polar
3z2-r2-0.735
x2-y25.308
xy-0.880
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.081 -1.137 0.001
y -1.137 4.653 -0.005
z 0.001 -0.005 2.397


<r2> (average value of r2) Å2
<r2> 35.655
(<r2>)1/2 5.971