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

using model chemistry: CCSD(T)/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 CCSD(T)/6-311+G(3df,2p)
 hartrees
Energy at 0K-491.020499
Energy at 298.15K-491.021244
HF Energy-490.458050
Nuclear repulsion energy79.597384
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 CCSD(T)/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' 3700 3652        
2 A' 2009 1983        
3 A' 874 862        
4 A' 641 633        
5 A' 452 446        
6 A" 485 478        

Unscaled Zero Point Vibrational Energy (zpe) 4080.4 cm-1
Scaled (by 0.9869) Zero Point Vibrational Energy (zpe) 4026.9 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 CCSD(T)/6-311+G(3df,2p)
ABC
34.50460 0.19501 0.19391

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.165 1.693 0.000
C2 0.000 0.495 0.000
S3 0.041 -1.079 0.000
H4 0.503 2.446 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.20922.77991.0060
C21.20921.57492.0142
S32.77991.57493.5550
H41.00602.01423.5550

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 173.650 C2 N1 H4 130.589
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability