return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for HSCN (thiocyanic acid)

using model chemistry: CCSD/6-31G*

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/6-31G*
 hartrees
Energy at 0K-490.805137
Energy at 298.15K-490.805674
HF Energy-490.381356
Nuclear repulsion energy78.055541
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/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' 2722 2571 1.85      
2 A' 2302 2174 3.86      
3 A' 1020 963 13.59      
4 A' 701 662 0.61      
5 A' 311 294 4.64      
6 A" 363 343 2.27      

Unscaled Zero Point Vibrational Energy (zpe) 3710.0 cm-1
Scaled (by 0.9443) Zero Point Vibrational Energy (zpe) 3503.4 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 CCSD/6-31G*
ABC
9.60730 0.18972 0.18604

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 -0.071 -1.009 0.000
C2 0.000 0.702 0.000
N3 -0.019 1.871 0.000
H4 1.267 -1.172 0.000

Atom - Atom Distances (Å)
  S1 C2 N3 H4
S11.71262.88061.3474
C21.71261.16922.2621
N32.88061.16923.3037
H41.34742.26213.3037

picture of thiocyanic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 N3 176.701 C2 S1 H4 94.585
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability