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

using model chemistry: B2PLYP=FULLultrafine/6-31G

19 10 17 12 22

States and conformations

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

Conformer 1 (CS)

Jump to S1C2
Energy calculated at B2PLYP=FULLultrafine/6-31G
 hartrees
Energy at 0K-491.276670
Energy at 298.15K 
HF Energy-491.179955
Nuclear repulsion energy77.781921
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 B2PLYP=FULLultrafine/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' 3835 3835 437.42      
2 A' 2083 2083 507.00      
3 A' 781 781 10.08      
4 A' 459 459 368.30      
5 A' 416 416 44.53      
6 A" 418 418 8.52      

Unscaled Zero Point Vibrational Energy (zpe) 3995.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3995.7 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 B2PLYP=FULLultrafine/6-31G
ABC
84.41270 0.18423 0.18383

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.142 1.720 0.000
C2 0.000 0.525 0.000
S3 0.047 -1.114 0.000
H4 0.251 2.638 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.20322.83990.9988
C21.20321.63952.1279
S32.83991.63953.7574
H40.99882.12793.7574

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 174.835 C2 N1 H4 150.042
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at B2PLYP=FULLultrafine/6-31G
 hartrees
Energy at 0K-491.275852
Energy at 298.15K 
HF Energy-491.181136
Nuclear repulsion energy77.790869
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 B2PLYP=FULLultrafine/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 Σ 3928 3928 678.57      
2 Σ 2128 2128 512.69      
3 Σ 766 766 25.03      
4 Π 414 414 8.22      
4 Π 414 414 8.22      
5 Π 346i 346i 239.06      
5 Π 346i 346i 239.06      

Unscaled Zero Point Vibrational Energy (zpe) 3479.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3479.6 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 B2PLYP=FULLultrafine/6-31G
B
0.18317

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-31G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.719
C2 0.000 0.000 -0.527
S3 0.000 0.000 1.119
H4 0.000 0.000 -2.711

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.19202.83790.9924
C21.19201.64592.1844
S32.83791.64593.8303
H40.99242.18443.8303

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