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

using model chemistry: B3PW91/3-21G*

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 B3PW91/3-21G*
 hartrees
Energy at 0K-489.180177
Energy at 298.15K-489.180506
HF Energy-489.180177
Nuclear repulsion energy79.664107
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 B3PW91/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3832 3676 628.47      
2 A' 2204 2114 514.95      
3 A' 866 831 23.27      
4 A' 526 504 0.56      
5 A' 151 145 289.46      
6 A" 529 507 0.26      

Unscaled Zero Point Vibrational Energy (zpe) 4053.1 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 3888.5 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 B3PW91/3-21G*
ABC
270.29332 0.19304 0.19290

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.033 1.682 0.000
C2 0.000 0.497 0.000
S3 0.001 -1.088 0.000
H4 0.219 2.645 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.18522.76960.9959
C21.18521.58472.1593
S32.76961.58473.7392
H40.99592.15933.7392

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 178.426 C2 N1 H4 163.724
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.767      
2 C 0.353      
3 S 0.025      
4 H 0.388      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.574 3.334 0.000 3.383
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.893 1.526 0.000
y 1.526 -15.979 0.000
z 0.000 0.000 -25.031
Traceless
 xyz
x -4.388 1.526 0.000
y 1.526 8.983 0.000
z 0.000 0.000 -4.596
Polar
3z2-r2-9.191
x2-y2-8.914
xy1.526
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.937 -0.049 0.000
y -0.049 8.057 0.000
z 0.000 0.000 1.917


<r2> (average value of r2) Å2
<r2> 60.981
(<r2>)1/2 7.809

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-489.180157
Energy at 298.15K 
HF Energy-489.180157
Nuclear repulsion energy79.662886
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 B3PW91/3-21G*
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 3860 3703 709.77      
2 Σ 2217 2127 507.93      
3 Σ 863 828 28.13      
4 Π 531 509 0.35      
4 Π 531 509 0.35      
5 Π 92i 88i 236.90      
5 Π 92i 88i 236.90      

Unscaled Zero Point Vibrational Energy (zpe) 3908.5 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 3749.8 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 B3PW91/3-21G*
B
0.19269

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.680
C2 0.000 0.000 -0.498
S3 0.000 0.000 1.089
H4 0.000 0.000 -2.674

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.18252.76880.9935
C21.18251.58632.1760
S32.76881.58633.7623
H40.99352.17603.7623

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 B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.781      
2 C 0.369      
3 S 0.019      
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 -3.515 3.515
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.025 0.000 0.000
y 0.000 -25.025 0.000
z 0.000 0.000 -15.480
Traceless
 xyz
x -4.772 0.000 0.000
y 0.000 -4.772 0.000
z 0.000 0.000 9.545
Polar
3z2-r219.089
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 1.915 0.000 0.000
y 0.000 1.915 0.000
z 0.000 0.000 7.995


<r2> (average value of r2) Å2
<r2> 61.001
(<r2>)1/2 7.810