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

using model chemistry: CISD/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 CISD/6-311G*
 hartrees
Energy at 0K-490.825228
Energy at 298.15K-490.825961
HF Energy-490.433469
Nuclear repulsion energy80.024889
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 CISD/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' 3830 3544 296.67      
2 A' 2122 1963 929.48      
3 A' 901 834 9.42      
4 A' 598 554 391.77      
5 A' 453 419 218.42      
6 A" 497 460 0.66      

Unscaled Zero Point Vibrational Energy (zpe) 4200.9 cm-1
Scaled (by 0.9253) Zero Point Vibrational Energy (zpe) 3887.1 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 CISD/6-311G*
ABC
39.85527 0.19669 0.19573

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.129 1.683 0.000
C2 0.000 0.497 0.000
S3 0.025 -1.076 0.000
H4 0.505 2.454 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.19282.76340.9983
C21.19281.57352.0206
S32.76341.57353.5622
H40.99832.02063.5622

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 174.683 C2 N1 H4 134.304
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability