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All results from a given calculation for HNCS (Isothiocyanic acid)

using model chemistry: QCISD/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 QCISD/6-311G*
 hartrees
Energy at 0K-490.876343
Energy at 298.15K-490.877072
HF Energy-490.432134
Nuclear repulsion energy79.502547
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 QCISD/6-311G*
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' 3725 3567 209.80      
2 A' 2044 1957 746.71      
3 A' 875 837 3.24      
4 A' 648 620 468.36      
5 A' 449 429 96.42      
6 A" 471 451 2.09      

Unscaled Zero Point Vibrational Energy (zpe) 4105.4 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 3930.5 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 QCISD/6-311G*
ABC
35.10022 0.19444 0.19337

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.153 1.695 0.000
C2 0.000 0.498 0.000
S3 0.035 -1.081 0.000
H4 0.515 2.447 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.20662.78301.0054
C21.20661.58022.0150
S32.78301.58023.5605
H41.00542.01503.5605

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 173.964 C2 N1 H4 131.058
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability