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QuantumChemistry

Symbols

  • ComputeVibrationalModes
  • ElectronicStructurePlot3D
  • ElectronicStructureResult
  • ModelChemistry
  • OptimizeMoleculeGeometry
  • PotentialEnergyScan
  • SinglePointEnergy
WolframChemistry`QuantumChemistry`
SinglePointEnergy
​
SinglePointEnergy
[mol]
returns the ground state electronic energy for the molecule
mol
.
​
​
SinglePointEnergy
[mol,modelChemistry]
uses the specified model chemistry to compute the energy.
​
Examples  
(2)
Basic Examples  
(2)
Compute the ground-state energy for CO2:
In[1]:=
res=
SinglePointEnergy
[Molecule["carbon dioxide"]]
Out[1]=
ElectronicStructureResult
Molecule: C
O
2
Calculation type: SinglePointEnergy
Method: HartreeFock

The returned value is an
ElectronicStructureResult
, since there is a lot of information available. You can get the energy directly:
In[2]:=
res["Energy"]
Out[2]=
-5032.36
eV
Or you can ask for the
"PrimaryResult"
In[3]:=
res["PrimaryResult"]
Out[3]=
-5032.36
eV
The available properties:
In[4]:=
res["Properties"]
Out[4]=
{AtomCoordinates,AtomCount,AtomicNumbers,AtomicOrbitalIndices,AtomicOrbitalNames,AtomicOrbitalOverlapMatrix,AtomMasses,BasisFunctionCount,CalculationType,CoreElectronCount,GaussianBasis,InputMolecule,MetaInformation,Method,MolecularMultipoleMoments,MolecularOrbitalCoefficients,MolecularOrbitalCount,MolecularOrbitalEnergies,MolecularOrbitalIndicesOfHOMO,Molecule,Multiplicity,NetCharge,PartialCharges,RotationalConstants,SCFEnergies}
​
Compute the ground state energy of hexanol using DFT and a larger basis set:
In[1]:=
res=
SinglePointEnergy
Molecule["hexanol"],
ModelChemistry
["DensityFunctionalTheory","6-31+G"]
Out[1]=
ElectronicStructureResult
Molecule:
C
6
H
14
O
Calculation type: SinglePointEnergy
Method: DensityFunctionalTheory

Find the energy:
In[2]:=
res["PrimaryResult"]
Out[2]=
-8419.54
eV
""

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