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

using model chemistry: HSEh1PBE/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
1 2 no C*V 1Σ

Conformer 1 (CS)

Jump to S1C2
Energy calculated at HSEh1PBE/6-31G*
 hartrees
Energy at 0K-491.393339
Energy at 298.15K-491.394085
HF Energy-491.393339
Nuclear repulsion energy79.710261
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 HSEh1PBE/6-31G*
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' 3730 3547 243.94      
2 A' 2106 2002 679.63      
3 A' 896 852 3.64      
4 A' 650 618 371.94      
5 A' 456 434 79.88      
6 A" 487 463 0.82      

Unscaled Zero Point Vibrational Energy (zpe) 4162.3 cm-1
Scaled (by 0.951) Zero Point Vibrational Energy (zpe) 3958.4 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 HSEh1PBE/6-31G*
ABC
36.38762 0.19544 0.19440

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.155 1.690 0.000
C2 0.000 0.496 0.000
S3 0.036 -1.079 0.000
H4 0.498 2.455 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.20402.77481.0062
C21.20401.57452.0220
S32.77481.57453.5638
H41.00622.02203.5638

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 173.950 C2 N1 H4 132.162
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.602      
2 C 0.269      
3 S -0.058      
4 H 0.391      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.232 1.968 0.000 2.322
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.186 3.197 0.000
y 3.197 -19.050 0.000
z 0.000 0.000 -24.990
Traceless
 xyz
x -2.166 3.197 0.000
y 3.197 5.538 0.000
z 0.000 0.000 -3.372
Polar
3z2-r2-6.744
x2-y2-5.136
xy3.197
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.476 -0.219 0.000
y -0.219 8.714 0.000
z 0.000 0.000 2.298


<r2> (average value of r2) Å2
<r2> 60.739
(<r2>)1/2 7.794

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at HSEh1PBE/6-31G*
 hartrees
Energy at 0K-491.389354
Energy at 298.15K 
HF Energy-491.389354
Nuclear repulsion energy79.750434
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 HSEh1PBE/6-31G*
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 3953 3760 713.34      
2 Σ 2222 2114 679.38      
3 Σ 874 831 31.62      
4 Π 483 459 4.11      
4 Π 483 459 4.11      
5 Π 477i 454i 184.82      
5 Π 477i 454i 184.82      

Unscaled Zero Point Vibrational Energy (zpe) 3530.5 cm-1
Scaled (by 0.951) Zero Point Vibrational Energy (zpe) 3357.5 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 HSEh1PBE/6-31G*
B
0.19310

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.678
C2 0.000 0.000 -0.498
S3 0.000 0.000 1.088
H4 0.000 0.000 -2.670

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.18002.76570.9921
C21.18001.58572.1721
S32.76571.58573.7578
H40.99212.17213.7578

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 HSEh1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.594      
2 C 0.305      
3 S -0.104      
4 H 0.393      


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 -3.326 3.326
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.930 0.000 0.000
y 0.000 -24.930 0.000
z 0.000 0.000 -15.539
Traceless
 xyz
x -4.695 0.000 0.000
y 0.000 -4.695 0.000
z 0.000 0.000 9.390
Polar
3z2-r218.781
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 2.292 0.000 0.000
y 0.000 2.292 0.000
z 0.000 0.000 8.445


<r2> (average value of r2) Å2
<r2> 60.872
(<r2>)1/2 7.802