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: PBE1PBE/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBE1PBE/6-311G**
 hartrees
Energy at 0K-491.418437
Energy at 298.15K-491.419176
HF Energy-491.418437
Nuclear repulsion energy79.947932
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 PBE1PBE/6-311G**
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' 3731 3579 279.84      
2 A' 2097 2012 747.43      
3 A' 895 859 5.00      
4 A' 613 588 323.24      
5 A' 452 433 113.98      
6 A" 489 469 1.14      

Unscaled Zero Point Vibrational Energy (zpe) 4138.5 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 3970.5 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 PBE1PBE/6-311G**
ABC
37.33890 0.19654 0.19551

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.134 1.686 0.000
C2 0.000 0.495 0.000
S3 0.026 -1.076 0.000
H4 0.522 2.446 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.19792.76621.0044
C21.19791.57142.0196
S32.76621.57143.5570
H41.00442.01963.5570

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 174.524 C2 N1 H4 132.809
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.436      
2 C 0.135      
3 S 0.040      
4 H 0.260      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.201 1.901 0.000 2.249
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.494 3.136 0.000
y 3.136 -19.228 0.000
z 0.000 0.000 -25.360
Traceless
 xyz
x -2.200 3.136 0.000
y 3.136 5.699 0.000
z 0.000 0.000 -3.499
Polar
3z2-r2-6.998
x2-y2-5.266
xy3.136
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.407 -0.170 0.000
y -0.170 8.977 0.000
z 0.000 0.000 2.256


<r2> (average value of r2) Å2
<r2> 60.660
(<r2>)1/2 7.788