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

using model chemistry: wB97X-D/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes C*V 1Σ

Conformer 1 (CS)

Jump to S1C2
Energy calculated at wB97X-D/6-31G
 hartrees
Energy at 0K-491.516950
Energy at 298.15K 
HF Energy-491.516950
Nuclear repulsion energy 
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 wB97X-D/6-31G
Rotational Constants (cm-1) from geometry optimized at wB97X-D/6-31G
See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31G
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at wB97X-D/6-31G
 hartrees
Energy at 0K-491.517006
Energy at 298.15K-491.516793
HF Energy-491.517006
Nuclear repulsion energy 
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 wB97X-D/6-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Σ 3975 3975 693.35      
2 Σ 2202 2202 613.24      
3 Σ 796 796 32.41      
4 Π 434 434 1.90      
4 Π 434 434 1.90      
5 Π 99 99 256.08      
5 Π 99 99 256.08      

Unscaled Zero Point Vibrational Energy (zpe) 4019.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4019.0 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 wB97X-D/6-31G
B
0.18618

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.704
C2 0.000 0.000 -0.522
S3 0.000 0.000 1.110
H4 0.000 0.000 -2.695

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.18212.81440.9904
C21.18211.63232.1725
S32.81441.63233.8048
H40.99042.17253.8048

picture of Isothiocyanic acid state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 S3 180.000 C2 N1 H4 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.560      
2 C 0.091      
3 S 0.060      
4 H 0.409      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -3.830 3.830
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.208 0.000 0.000
y 0.000 -25.208 0.000
z 0.000 0.000 -16.416
Traceless
 xyz
x -4.396 0.000 0.000
y 0.000 -4.396 0.000
z 0.000 0.000 8.792
Polar
3z2-r217.584
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.919 0.000 0.000
y 0.000 1.919 0.000
z 0.000 0.000 8.658


<r2> (average value of r2) Å2
<r2> 62.861
(<r2>)1/2 7.928