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

using model chemistry: B3LYP/TZVP

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/TZVP
 hartrees
Energy at 0K-168.748182
Energy at 298.15K-168.749197
HF Energy-168.748182
Nuclear repulsion energy59.340445
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/TZVP
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' 3701 3573 182.56      
2 A' 2350 2269 737.53      
3 A' 1347 1301 1.04      
4 A' 739 714 199.11      
5 A' 569 549 117.15      
6 A" 637 615 4.89      

Unscaled Zero Point Vibrational Energy (zpe) 4671.6 cm-1
Scaled (by 0.9654) Zero Point Vibrational Energy (zpe) 4510.0 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/TZVP
ABC
32.29806 0.36982 0.36563

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.312 -1.451 0.000
N2 0.371 -1.100 0.000
C3 0.000 0.049 0.000
O4 -0.489 1.107 0.000

Atom - Atom Distances (Å)
  H1 N2 C3 O4
H11.00401.99273.1285
N21.00401.20732.3689
C31.99271.20731.1659
O43.12852.36891.1659

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 128.373 N2 C3 O4 173.120
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.258      
2 N -0.396      
3 C 0.427      
4 O -0.289      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.101 -1.058 0.000 2.352
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.899 -1.480 0.000
y -1.480 -18.940 0.000
z 0.000 0.000 -16.725
Traceless
 xyz
x 3.934 -1.480 0.000
y -1.480 -3.628 0.000
z 0.000 0.000 -0.305
Polar
3z2-r2-0.611
x2-y25.041
xy-1.480
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.237 -1.127 0.000
y -1.127 4.505 0.000
z 0.000 0.000 1.654


<r2> (average value of r2) Å2
<r2> 35.315
(<r2>)1/2 5.943