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 CS2 (Carbon disulfide)

using model chemistry: MP2=FULL/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D*H 1Σg
Energy calculated at MP2=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-833.426678
Energy at 298.15K-833.426337
HF Energy-832.902991
Nuclear repulsion energy108.983688
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=FULL/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 684 643 0.00 47.12 0.26 0.41
2 Σu 1664 1564 547.30 0.00 0.00 0.00
3 Πu 428 403 2.78 0.00 0.00 0.00
3 Πu 428 403 2.78 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 1602.5 cm-1
Scaled (by 0.9399) Zero Point Vibrational Energy (zpe) 1506.2 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=FULL/6-31G(2df,p)
B
0.10920

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G(2df,p)

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
S2 0.000 0.000 1.554
S3 0.000 0.000 -1.554

Atom - Atom Distances (Å)
  C1 S2 S3
C11.55381.5538
S21.55383.1076
S31.55383.1076

picture of Carbon disulfide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S2 C1 S3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability