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

using model chemistry: PBEPBE/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 PBEPBE/6-31G*
 hartrees
Energy at 0K-491.342536
Energy at 298.15K-491.343265
HF Energy-491.342536
Nuclear repulsion energy79.004956
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 PBEPBE/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' 3588 3537 160.57      
2 A' 2023 1994 526.16      
3 A' 866 854 1.40      
4 A' 694 684 342.37      
5 A' 442 436 42.05      
6 A" 465 458 2.56      

Unscaled Zero Point Vibrational Energy (zpe) 4039.1 cm-1
Scaled (by 0.9857) Zero Point Vibrational Energy (zpe) 3981.4 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 PBEPBE/6-31G*
ABC
32.54785 0.19229 0.19116

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.184 1.704 0.000
C2 0.000 0.498 0.000
S3 0.050 -1.086 0.000
H4 0.494 2.462 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.22022.80041.0167
C21.22021.58522.0247
S32.80041.58523.5756
H41.01672.02473.5756

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 173.114 C2 N1 H4 129.458
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.555      
2 C 0.237      
3 S -0.048      
4 H 0.366      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.196 1.808 0.000 2.168
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.144 3.121 0.000
y 3.121 -19.162 0.000
z 0.000 0.000 -24.930
Traceless
 xyz
x -2.098 3.121 0.000
y 3.121 5.375 0.000
z 0.000 0.000 -3.277
Polar
3z2-r2-6.554
x2-y2-4.982
xy3.121
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.540 -0.265 0.000
y -0.265 8.876 0.000
z 0.000 0.000 2.323


<r2> (average value of r2) Å2
<r2> 61.490
(<r2>)1/2 7.842

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at PBEPBE/6-31G*
 hartrees
Energy at 0K-491.336878
Energy at 298.15K 
HF Energy-491.336878
Nuclear repulsion energy79.106831
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 PBEPBE/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 3853 3798 629.24      
2 Σ 2145 2114 554.35      
3 Σ 851 838 20.09      
4 Π 460 454 6.71      
4 Π 460 454 6.71      
5 Π 543i 535i 169.73      
5 Π 543i 535i 169.73      

Unscaled Zero Point Vibrational Energy (zpe) 3341.5 cm-1
Scaled (by 0.9857) Zero Point Vibrational Energy (zpe) 3293.7 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 PBEPBE/6-31G*
B
0.19003

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.693
C2 0.000 0.000 -0.499
S3 0.000 0.000 1.096
H4 0.000 0.000 -2.692

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.19432.78900.9993
C21.19431.59462.1936
S32.78901.59463.7882
H40.99932.19363.7882

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 PBEPBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.547      
2 C 0.273      
3 S -0.092      
4 H 0.366      


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 -3.190 3.190
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.852 0.000 0.000
y 0.000 -24.852 0.000
z 0.000 0.000 -15.467
Traceless
 xyz
x -4.692 0.000 0.000
y 0.000 -4.692 0.000
z 0.000 0.000 9.385
Polar
3z2-r218.770
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 2.315 0.000 0.000
y 0.000 2.315 0.000
z 0.000 0.000 8.619


<r2> (average value of r2) Å2
<r2> 61.590
(<r2>)1/2 7.848