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

using model chemistry: HF/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 HF/6-31G*
 hartrees
Energy at 0K-490.391508
Energy at 298.15K-490.392112
HF Energy-490.391508
Nuclear repulsion energy80.212776
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 HF/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' 3993 3587 528.17      
2 A' 2250 2022 1083.46      
3 A' 888 798 31.53      
4 A' 550 495 72.87      
5 A' 340 306 561.14      
6 A" 529 475 0.97      

Unscaled Zero Point Vibrational Energy (zpe) 4275.4 cm-1
Scaled (by 0.8985) Zero Point Vibrational Energy (zpe) 3841.4 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 HF/6-31G*
ABC
55.45007 0.19678 0.19608

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.098 1.673 0.000
C2 0.000 0.506 0.000
S3 0.015 -1.078 0.000
H4 0.445 2.501 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.17142.75360.9897
C21.17141.58402.0437
S32.75361.58403.6043
H40.98972.04373.6043

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 175.731 C2 N1 H4 141.899
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.693      
2 C 0.384      
3 S -0.132      
4 H 0.441      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.169 2.890 0.000 3.117
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.940 3.038 0.000
y 3.038 -18.627 0.000
z 0.000 0.000 -25.598
Traceless
 xyz
x -2.828 3.038 0.000
y 3.038 6.642 0.000
z 0.000 0.000 -3.815
Polar
3z2-r2-7.629
x2-y2-6.313
xy3.038
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.366 -0.151 0.000
y -0.151 8.387 0.000
z 0.000 0.000 2.267


<r2> (average value of r2) Å2
<r2> 60.650
(<r2>)1/2 7.788

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at HF/6-31G*
 hartrees
Energy at 0K-490.390936
Energy at 298.15K 
HF Energy-490.390936
Nuclear repulsion energy80.127379
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 HF/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 4119 3701 895.48      
2 Σ 2355 2116 975.30      
3 Σ 852 766 81.17      
4 Π 523 470 0.00      
4 Π 523 470 0.00      
5 Π 209i 188i 219.81      
5 Π 209i 188i 219.81      

Unscaled Zero Point Vibrational Energy (zpe) 3977.5 cm-1
Scaled (by 0.8985) Zero Point Vibrational Energy (zpe) 3573.8 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 HF/6-31G*
B
0.19457

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.665
C2 0.000 0.000 -0.512
S3 0.000 0.000 1.086
H4 0.000 0.000 -2.648

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.15352.75130.9824
C21.15351.59792.1359
S32.75131.59793.7338
H40.98242.13593.7338

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 HF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.678      
2 C 0.408      
3 S -0.172      
4 H 0.443      


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 -4.001 4.001
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.584 0.000 0.000
y 0.000 -25.584 0.000
z 0.000 0.000 -16.019
Traceless
 xyz
x -4.783 0.000 0.000
y 0.000 -4.783 0.000
z 0.000 0.000 9.565
Polar
3z2-r219.131
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 2.265 0.000 0.000
y 0.000 2.265 0.000
z 0.000 0.000 8.076


<r2> (average value of r2) Å2
<r2> 60.855
(<r2>)1/2 7.801