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

using model chemistry: TPSSh/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 TPSSh/6-31G*
 hartrees
Energy at 0K-491.637447
Energy at 298.15K-491.638197
HF Energy-491.637447
Nuclear repulsion energy79.393401
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 TPSSh/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' 3663 3514 186.03      
2 A' 2055 1972 613.36      
3 A' 878 843 1.87      
4 A' 690 662 384.01      
5 A' 453 434 54.30      
6 A" 477 458 1.78      

Unscaled Zero Point Vibrational Energy (zpe) 4108.0 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 3941.2 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 TPSSh/6-31G*
ABC
33.81775 0.19408 0.19297

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.176 1.696 0.000
C2 0.000 0.497 0.000
S3 0.046 -1.082 0.000
H4 0.492 2.454 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.21182.78651.0102
C21.21181.57932.0176
S32.78651.57933.5633
H41.01022.01763.5633

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 173.321 C2 N1 H4 130.237
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.597      
2 C 0.264      
3 S -0.049      
4 H 0.382      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.226 1.893 0.000 2.255
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.501 -0.261 0.000
y -0.261 8.790 0.000
z 0.000 0.000 2.296


<r2> (average value of r2) Å2
<r2> 61.064
(<r2>)1/2 7.814

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at TPSSh/6-31G*
 hartrees
Energy at 0K-491.632341
Energy at 298.15K 
HF Energy-491.632341
Nuclear repulsion energy79.459310
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 TPSSh/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 3912 3754 665.01      
2 Σ 2182 2094 638.71      
3 Σ 857 823 26.95      
4 Π 474 454 5.95      
4 Π 474 454 5.95      
5 Π 522i 501i 180.07      
5 Π 522i 501i 180.07      

Unscaled Zero Point Vibrational Energy (zpe) 3427.9 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 3288.8 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 TPSSh/6-31G*
B
0.19168

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.685
C2 0.000 0.000 -0.499
S3 0.000 0.000 1.092
H4 0.000 0.000 -2.679

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.18522.77620.9940
C21.18521.59102.1793
S32.77621.59103.7703
H40.99402.17933.7703

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 TPSSh/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.595      
2 C 0.306      
3 S -0.098      
4 H 0.387      


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 -3.329 3.329
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.288 0.000 0.000
y 0.000 2.288 0.000
z 0.000 0.000 8.516


<r2> (average value of r2) Å2
<r2> 61.186
(<r2>)1/2 7.822