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

using model chemistry: CID/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
1 2 no C*V 1Σ

Conformer 1 (CS)

Jump to S1C2
Energy calculated at CID/cc-pVTZ
 hartrees
Energy at 0K-490.926886
Energy at 298.15K-490.927627
HF Energy-490.463870
Nuclear repulsion energy80.313956
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/cc-pVTZ
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' 3840 3558 354.77      
2 A' 2132 1975 964.09      
3 A' 905 838 11.08      
4 A' 586 543 234.61      
5 A' 441 408 319.01      
6 A" 521 483 0.61      

Unscaled Zero Point Vibrational Energy (zpe) 4212.0 cm-1
Scaled (by 0.9265) Zero Point Vibrational Energy (zpe) 3902.4 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/cc-pVTZ
ABC
40.08899 0.19809 0.19712

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.120 1.677 0.000
C2 0.000 0.497 0.000
S3 0.020 -1.073 0.000
H4 0.518 2.440 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.18652.75340.9945
C21.18651.56962.0111
S32.75341.56963.5478
H40.99452.01113.5478

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 174.926 C2 N1 H4 134.282
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at CID/cc-pVTZ
 hartrees
Energy at 0K-490.924900
Energy at 298.15K 
HF Energy-490.462949
Nuclear repulsion energy80.265340
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/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 4004 3710 809.54      
2 Σ 2249 2084 919.36      
3 Σ 873 809 56.50      
4 Π 516 478 4.06      
4 Π 516 478 4.06      
5 Π 342i 317i 155.83      
5 Π 342i 317i 155.83      

Unscaled Zero Point Vibrational Energy (zpe) 3736.3 cm-1
Scaled (by 0.9265) Zero Point Vibrational Energy (zpe) 3461.7 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/cc-pVTZ
B
0.19546

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/cc-pVTZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.665
C2 0.000 0.000 -0.502
S3 0.000 0.000 1.082
H4 0.000 0.000 -2.648

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.16322.74730.9834
C21.16321.58412.1466
S32.74731.58413.7307
H40.98342.14663.7307

picture of Isothiocyanic acid state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 S3 180.000 C2 N1 H4 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability