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 CaS (Calcium sulfide)

using model chemistry: QCISD/cc-pCVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 1Σ
Energy calculated at QCISD/cc-pCVDZ
 hartrees
Energy at 0K-1074.463416
Energy at 298.15K-1074.463662
HF Energy-1074.295093
Nuclear repulsion energy70.913129
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 QCISD/cc-pCVDZ
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 431 431 2.64      

Unscaled Zero Point Vibrational Energy (zpe) 215.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 215.5 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 QCISD/cc-pCVDZ
B
0.16644

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Ca1 0.000 0.000 1.061
S2 0.000 0.000 -1.327

Atom - Atom Distances (Å)
  Ca1 S2
Ca12.3879
S22.3879

picture of Calcium sulfide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability