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: B97D3/3-21G*

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 B97D3/3-21G*
 hartrees
Energy at 0K-489.212761
Energy at 298.15K-489.213426
HF Energy-489.212761
Nuclear repulsion energy79.244178
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 B97D3/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3639 3639 308.27      
2 A' 2093 2093 440.22      
3 A' 855 855 7.10      
4 A' 513 513 110.81      
5 A' 453 453 274.12      
6 A" 504 504 0.35      

Unscaled Zero Point Vibrational Energy (zpe) 4027.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4027.6 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 B97D3/3-21G*
ABC
57.59503 0.19224 0.19160

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.097 1.697 0.000
C2 0.000 0.497 0.000
S3 0.015 -1.088 0.000
H4 0.435 2.554 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.20482.78811.0088
C21.20481.58512.1033
S32.78811.58513.6670
H41.00882.10333.6670

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 175.927 C2 N1 H4 143.527
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.697      
2 C 0.288      
3 S 0.054      
4 H 0.355      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.099 2.576 0.000 2.801
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.365 2.866 0.000
y 2.866 -17.619 0.000
z 0.000 0.000 -24.900
Traceless
 xyz
x -3.106 2.866 0.000
y 2.866 7.013 0.000
z 0.000 0.000 -3.907
Polar
3z2-r2-7.815
x2-y2-6.746
xy2.866
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.053 -0.100 0.000
y -0.100 8.278 0.000
z 0.000 0.000 1.936


<r2> (average value of r2) Å2
<r2> 61.313
(<r2>)1/2 7.830

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at B97D3/3-21G*
 hartrees
Energy at 0K-489.211631
Energy at 298.15K 
HF Energy-489.211631
Nuclear repulsion energy79.285995
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 B97D3/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Σ 3798 3798 637.21      
2 Σ 2158 2158 442.40      
3 Σ 845 845 20.05      
4 Π 509 509 0.42      
4 Π 509 509 0.42      
5 Π 311i 311i 224.52      
5 Π 311i 311i 224.52      

Unscaled Zero Point Vibrational Energy (zpe) 3599.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3599.5 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 B97D3/3-21G*
B
0.19088

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/3-21G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.689
C2 0.000 0.000 -0.498
S3 0.000 0.000 1.094
H4 0.000 0.000 -2.685

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.19122.78270.9962
C21.19121.59162.1874
S32.78271.59163.7790
H40.99622.18743.7790

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 B97D3/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.751      
2 C 0.351      
3 S 0.027      
4 H 0.373      


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 -3.383 3.383
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.860 0.000 0.000
y 0.000 -24.860 0.000
z 0.000 0.000 -15.400
Traceless
 xyz
x -4.730 0.000 0.000
y 0.000 -4.730 0.000
z 0.000 0.000 9.460
Polar
3z2-r218.919
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 1.929 0.000 0.000
y 0.000 1.929 0.000
z 0.000 0.000 8.045


<r2> (average value of r2) Å2
<r2> 61.364
(<r2>)1/2 7.834