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: CID/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CID/6-311+G(3df,2p)
 hartrees
Energy at 0K-490.921886
Energy at 298.15K-490.922631
HF Energy-490.460065
Nuclear repulsion energy80.452849
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 CID/6-311+G(3df,2p)
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' 3847 3555 367.70      
2 A' 2125 1963 1064.57      
3 A' 911 842 13.18      
4 A' 585 540 232.36      
5 A' 445 411 322.17      
6 A" 523 483 1.75      

Unscaled Zero Point Vibrational Energy (zpe) 4217.3 cm-1
Scaled (by 0.924) Zero Point Vibrational Energy (zpe) 3896.8 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 CID/6-311+G(3df,2p)
ABC
41.05321 0.19879 0.19783

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.122 1.674 0.000
C2 0.000 0.494 0.000
S3 0.021 -1.070 0.000
H4 0.507 2.446 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.18632.74810.9956
C21.18631.56452.0169
S32.74811.56453.5498
H40.99562.01693.5498

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 174.906 C2 N1 H4 134.969
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability