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

using model chemistry: MP2/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/STO-3G
 hartrees
Energy at 0K-485.016428
Energy at 298.15K-485.017092
HF Energy-484.826149
Nuclear repulsion energy78.318322
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 MP2/STO-3G
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' 3699 3226 36.12      
2 A' 2108 1838 203.31      
3 A' 932 813 12.95      
4 A' 827 721 360.59      
5 A' 431 376 32.39      
6 A" 465 406 7.47      

Unscaled Zero Point Vibrational Energy (zpe) 4231.4 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 3689.4 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 MP2/STO-3G
ABC
21.48287 0.19083 0.18915

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.403 1.691 0.000
C2 0.000 0.485 0.000
S3 0.157 -1.076 0.000
H4 0.303 2.476 0.000

Atom - Atom Distances (Å)
  N1 C2 S3 H4
N11.27182.82321.0557
C21.27181.56882.0143
S32.82321.56883.5552
H41.05572.01433.5552

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 167.284 C2 N1 H4 119.581
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability