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return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for (Carbon disulfide)

using model chemistry: MP2=FULL/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A1
Energy calculated at MP2=FULL/3-21G
 hartrees
Energy at 0K-828.975773
Energy at 298.15K-828.975120
HF Energy-828.777319
Nuclear repulsion energy101.473907
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/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 635 606 0.11      
2 A1 330 315 0.06      
3 B2 1076 1027 542.06      

Unscaled Zero Point Vibrational Energy (zpe) 1020.2 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 974.1 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/3-21G
ABC
4.81435 0.10199 0.09988

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.496
S2 0.000 1.608 -0.093
S3 0.000 -1.608 -0.093

Atom - Atom Distances (Å)
  C1 S2 S3
C11.71211.7121
S21.71213.2154
S31.71213.2154

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