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

using model chemistry: wB97X-D/3-21G

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/3-21G
 hartrees
Energy at 0K-489.102569
Energy at 298.15K 
HF Energy-489.102569
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/3-21G
Rotational Constants (cm-1) from geometry optimized at wB97X-D/3-21G
See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/3-21G
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at wB97X-D/3-21G
 hartrees
Energy at 0K-489.102607
Energy at 298.15K-489.103177
HF Energy-489.102607
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/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 3883 3883 749.92      
2 Σ 2251 2251 491.93      
3 Σ 804 804 30.83      
4 Π 541 541 10.75      
4 Π 541 541 10.75      
5 Π 304 304 226.81      
5 Π 304 304 226.81      

Unscaled Zero Point Vibrational Energy (zpe) 4314.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4314.3 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/3-21G
B
0.18689

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/3-21G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.699
C2 0.000 0.000 -0.525
S3 0.000 0.000 1.108
H4 0.000 0.000 -2.692

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.17412.80760.9928
C21.17411.63352.1669
S32.80761.63353.8004
H40.99282.16693.8004

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/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.784      
2 C 0.182      
3 S 0.197      
4 H 0.404      


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 -4.185 4.185
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.272 0.000 0.000
y 0.000 -25.272 0.000
z 0.000 0.000 -15.981
Traceless
 xyz
x -4.645 0.000 0.000
y 0.000 -4.645 0.000
z 0.000 0.000 9.291
Polar
3z2-r218.581
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 1.655 0.000 0.000
y 0.000 1.655 0.000
z 0.000 0.000 7.965


<r2> (average value of r2) Å2
<r2> 62.618
(<r2>)1/2 7.913