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: BLYP/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at BLYP/cc-pVDZ
 hartrees
Energy at 0K-491.624801
Energy at 298.15K-491.625530
HF Energy-491.624801
Nuclear repulsion energy78.547077
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 BLYP/cc-pVDZ
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' 3506 3511 133.35      
2 A' 1972 1975 494.95      
3 A' 846 848 2.72      
4 A' 708 709 296.28      
5 A' 433 434 38.35      
6 A" 458 459 3.39      

Unscaled Zero Point Vibrational Energy (zpe) 3961.6 cm-1
Scaled (by 1.0016) Zero Point Vibrational Energy (zpe) 3967.9 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 BLYP/cc-pVDZ
ABC
29.88271 0.19024 0.18904

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.186 1.715 0.000
C2 0.000 0.504 0.000
S3 0.048 -1.092 0.000
H4 0.527 2.449 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.22562.81731.0235
C21.22561.59692.0155
S32.81731.59693.5737
H41.02352.01553.5737

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 173.006 C2 N1 H4 127.076
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.111      
2 C 0.040      
3 S -0.062      
4 H 0.133      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.120 1.598 0.000 1.951
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.035 2.907 0.000
y 2.907 -19.320 0.000
z 0.000 0.000 -24.828
Traceless
 xyz
x -1.962 2.907 0.000
y 2.907 5.112 0.000
z 0.000 0.000 -3.150
Polar
3z2-r2-6.300
x2-y2-4.715
xy2.907
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.480 -0.176 0.000
y -0.176 8.800 0.000
z 0.000 0.000 2.246


<r2> (average value of r2) Å2
<r2> 61.960
(<r2>)1/2 7.871