return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: wB97X-D/CEP-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 wB97X-D/CEP-31G*
 hartrees
Energy at 0K-26.282705
Energy at 298.15K-26.283394
HF Energy-26.282705
Nuclear repulsion energy 
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 wB97X-D/CEP-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' 3732 3732 246.31      
2 A' 2064 2064 786.52      
3 A' 877 877 3.70      
4 A' 602 602 342.89      
5 A' 436 436 126.32      
6 A" 478 478 1.22      

Unscaled Zero Point Vibrational Energy (zpe) 4093.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4093.8 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 wB97X-D/CEP-31G*
ABC
32.31165 0.19085 0.18973

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.160 1.714 0.000
C2 0.000 0.502 0.000
S3 0.036 -1.091 0.000
H4 0.538 2.450 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.22162.81161.0139
C21.22161.59412.0199
S32.81161.59413.5761
H41.01392.01993.5761

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 173.789 C2 N1 H4 129.027
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.002      
2 C -0.083      
3 S -0.282      
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
  1.360 1.784 0.000 2.243
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.549 3.507 0.000
y 3.507 -18.462 0.000
z 0.000 0.000 -24.492
Traceless
 xyz
x -2.072 3.507 0.000
y 3.507 5.558 0.000
z 0.000 0.000 -3.487
Polar
3z2-r2-6.973
x2-y2-5.087
xy3.507
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.335 -0.290 0.000
y -0.290 9.259 0.000
z 0.000 0.000 2.151


<r2> (average value of r2) Å2
<r2> 43.106
(<r2>)1/2 6.566

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at wB97X-D/CEP-31G*
 hartrees
Energy at 0K-26.280456
Energy at 298.15K 
HF Energy-26.280456
Nuclear repulsion energy 
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 wB97X-D/CEP-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 3954 3954 746.81      
2 Σ 2214 2214 781.87      
3 Σ 847 847 37.10      
4 Π 473 473 7.43      
4 Π 473 473 7.43      
5 Π 259i 259i 182.19      
5 Π 259i 259i 182.19      

Unscaled Zero Point Vibrational Energy (zpe) 3721.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3721.8 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 wB97X-D/CEP-31G*
B
0.18842

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/CEP-31G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.698
C2 0.000 0.000 -0.506
S3 0.000 0.000 1.101
H4 0.000 0.000 -2.699

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.19232.79981.0003
C21.19231.60752.1926
S32.79981.60753.8000
H41.00032.19263.8000

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 wB97X-D/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.062      
2 C -0.174      
3 S -0.295      
4 H 0.406      


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 -3.320 3.320
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.414 0.000 0.000
y 0.000 -24.414 0.000
z 0.000 0.000 -14.511
Traceless
 xyz
x -4.952 0.000 0.000
y 0.000 -4.952 0.000
z 0.000 0.000 9.903
Polar
3z2-r219.806
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 2.091 0.000 0.000
y 0.000 2.091 0.000
z 0.000 0.000 9.031


<r2> (average value of r2) Å2
<r2> 43.194
(<r2>)1/2 6.572