Class BondPartialPiChargeDescriptor

All Implemented Interfaces:
IBondDescriptor, IDescriptor

public class BondPartialPiChargeDescriptor extends AbstractBondDescriptor
The calculation of bond-pi Partial charge is calculated determining the difference the Partial Pi Charge on atoms A and B of a bond. Based in Gasteiger Charge.
Parameters for this descriptor:
Name Default Description
bondPosition 0 The position of the target bond
Miguel Rojas
See Also:
Dictionary pointer(s):
bondPartialPiCharge in the Descriptors Dictionary [qsar-descriptors:bondPartialPiCharge]
Source code:
Belongs to CDK module:
Created on:
  • Constructor Details

    • BondPartialPiChargeDescriptor

      public BondPartialPiChargeDescriptor()
      Constructor for the BondPartialPiChargeDescriptor object.
  • Method Details

    • getSpecification

      public DescriptorSpecification getSpecification()
      Gets the specification attribute of the BondPartialPiChargeDescriptor object.
      The specification value
    • setParameters

      public void setParameters(Object[] params) throws CDKException
      This descriptor does have any parameter.
      params - An array of Object containing the parameters for this descriptor
      CDKException - if invalid number of type of parameters are passed to it
      See Also:
    • getParameters

      public Object[] getParameters()
      Gets the parameters attribute of the BondPartialPiChargeDescriptor object.
      The parameters value
      See Also:
    • getDescriptorNames

      public String[] getDescriptorNames()
      Description copied from interface: IDescriptor
      Returns an array of names for each descriptor value calculated. Many descriptors return multiple values. In general it is useful for the descriptor to indicate the names for each value. In many cases, these names can be as simple as X1, X2, ..., XN where X is a prefix and 1, 2, ..., N are the indices. On the other hand it is also possible to return other arbitrary names, which should be documented in the Javadocs for the descriptor (e.g., the CPSA descriptor). Note that by default if a descriptor returns a single value (such as ALOGPDescriptor the return array will have a single element
      An array of descriptor names, equal in length to the number of descriptor calculated..
    • calculate

      public DescriptorValue calculate(IBond bond, IAtomContainer ac)
      The method calculates the bond-pi Partial charge of a given bond It is needed to call the addExplicitHydrogensToSatisfyValency method from the class tools.HydrogenAdder.
      ac - AtomContainer
      bond - A IBond for which this descriptor should be calculated
      return the sigma electronegativity
    • getParameterNames

      public String[] getParameterNames()
      Gets the parameterNames attribute of the BondPartialPiChargeDescriptor object.
      The parameterNames value
    • getParameterType

      public Object getParameterType(String name)
      Gets the parameterType attribute of the BondPartialPiChargeDescriptor object.
      name - Description of the Parameter
      An Object of class equal to that of the parameter being requested
    • initialise

      public void initialise(IChemObjectBuilder builder)
      Default implementation of initialise allows optional override.
      Specified by:
      initialise in interface IDescriptor
      builder - chem object build