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

using model chemistry: B3LYP/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/cc-pVDZ
 hartrees
Energy at 0K-168.693261
Energy at 298.15K-168.694289
Nuclear repulsion energy58.904311
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/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' 3640 3531 127.02      
2 A' 2339 2269 613.59      
3 A' 1327 1287 0.32      
4 A' 826 801 195.47      
5 A' 559 542 66.74      
6 A" 619 601 2.97      

Unscaled Zero Point Vibrational Energy (zpe) 4655.5 cm-1
Scaled (by 0.97) Zero Point Vibrational Energy (zpe) 4515.8 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/cc-pVDZ
ABC
26.62831 0.36599 0.36103

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.414 -1.309 0.000
N2 0.422 -1.097 0.000
C3 0.000 0.050 0.000
O4 -0.546 1.087 0.000

Atom - Atom Distances (Å)
  H1 N2 C3 O4
H11.01481.96123.0952
N21.01481.22232.3888
C31.96121.22231.1717
O43.09522.38881.1717

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 122.209 N2 C3 O4 172.420
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.146      
2 N -0.208      
3 C 0.203      
4 O -0.141      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.942 -0.704 0.000 2.065
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.372 -1.046 0.000
y -1.046 -18.404 0.000
z 0.000 0.000 -16.244
Traceless
 xyz
x 3.952 -1.046 0.000
y -1.046 -3.596 0.000
z 0.000 0.000 -0.356
Polar
3z2-r2-0.712
x2-y25.032
xy-1.046
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.205 -1.131 0.000
y -1.131 3.786 0.000
z 0.000 0.000 1.375


<r2> (average value of r2) Å2
<r2> 35.230
(<r2>)1/2 5.935