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All results from a given calculation for HNCS (Isothiocyanic acid)

using model chemistry: HF/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/6-31G(2df,p)
 hartrees
Energy at 0K-490.412494
Energy at 298.15K-490.413128
HF Energy-490.412494
Nuclear repulsion energy80.520229
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 HF/6-31G(2df,p)
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' 3976 3600 510.55      
2 A' 2229 2018 1099.66      
3 A' 896 811 27.39      
4 A' 577 522 59.49      
5 A' 326 295 551.06      
6 A" 553 501 0.21      

Unscaled Zero Point Vibrational Energy (zpe) 4278.0 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 3873.7 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 HF/6-31G(2df,p)
ABC
50.89407 0.19848 0.19771

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.093 1.669 0.000
C2 0.000 0.503 0.000
S3 0.011 -1.073 0.000
H4 0.480 2.473 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.16962.74380.9877
C21.16961.57602.0280
S32.74381.57603.5772
H40.98772.02803.5772

picture of Isothiocyanic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 S3 175.828 C2 N1 H4 139.974
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.495      
2 C 0.387      
3 S -0.266      
4 H 0.374      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.093 2.613 0.000 2.832
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.714 2.935 0.000
y 2.935 -18.546 0.000
z 0.000 0.000 -25.464
Traceless
 xyz
x -2.709 2.935 0.000
y 2.935 6.543 0.000
z 0.000 0.000 -3.834
Polar
3z2-r2-7.668
x2-y2-6.168
xy2.935
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.043 -0.072 0.000
y -0.072 8.460 0.000
z 0.000 0.000 2.976


<r2> (average value of r2) Å2
<r2> 60.153
(<r2>)1/2 7.756