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

using model chemistry: G3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at G3
 hartrees
Energy at 0K-491.443281
Energy at 298.15K-491.438530
HF Energy-490.391508
Nuclear repulsion energy80.211019
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 HF/6-31G*
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' 3993 3762 528.17      
2 A' 2250 2120 1083.46      
3 A' 888 837 31.53      
4 A' 550 519 72.87      
5 A' 340 321 561.14      
6 A" 529 499 0.97      

Unscaled Zero Point Vibrational Energy (zpe) 4275.4 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 4028.2 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 MP2=FULL/6-31G*
ABC
38.55971 0.19424 0.19326

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.194 1.691 0.000
C2 0.000 0.491 0.000
S3 0.059 -1.080 0.000
H4 0.409 2.499 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.21492.78241.0085
C21.21491.57272.0488
S32.78241.57273.5962
H41.00852.04883.5962

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 179.802 C2 N1 H4 131.519
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability