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: B3LYP/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/aug-cc-pVTZ
 hartrees
Energy at 0K-491.711141
Energy at 298.15K-491.711906
HF Energy-491.711141
Nuclear repulsion energy79.862144
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 B3LYP/aug-cc-pVTZ
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' 3671 3551 243.26      
2 A' 2039 1972 772.98      
3 A' 876 848 2.80      
4 A' 648 627 337.34      
5 A' 461 446 77.61      
6 A" 491 475 3.57      

Unscaled Zero Point Vibrational Energy (zpe) 4092.6 cm-1
Scaled (by 0.9675) Zero Point Vibrational Energy (zpe) 3959.6 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 B3LYP/aug-cc-pVTZ
ABC
36.51631 0.19617 0.19512

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.144 1.687 0.000
C2 0.000 0.496 0.000
S3 0.031 -1.077 0.000
H4 0.514 2.446 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.19982.76941.0045
C21.19981.57312.0165
S32.76941.57313.5556
H41.00452.01653.5556

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 174.232 C2 N1 H4 132.160
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.109      
2 C -0.122      
3 S 0.018      
4 H 0.213      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.073 1.584 0.000 1.913
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.657 2.986 0.000
y 2.986 -19.737 0.000
z 0.000 0.000 -25.489
Traceless
 xyz
x -2.044 2.986 0.000
y 2.986 5.336 0.000
z 0.000 0.000 -3.292
Polar
3z2-r2-6.584
x2-y2-4.920
xy2.986
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.456 -0.188 0.000
y -0.188 9.943 0.000
z 0.000 0.000 4.421


<r2> (average value of r2) Å2
<r2> 60.909
(<r2>)1/2 7.804