rmgpy.molecule.GroupAtom

class rmgpy.molecule.GroupAtom

An atom group. This class is based on the Atom class, except that it uses atom types instead of elements, and all attributes are lists rather than individual values. The attributes are:

Attribute	Type	Description
atomtype	list	The allowed atom types (as AtomType objects)
radical_electrons	list	The allowed numbers of radical electrons (as short integers)
charge	list	The allowed formal charges (as short integers)
label	str	A string label that can be used to tag individual atoms
lone_pairs	list	The number of lone electron pairs
charge	list	The partial charge of the atom
site	list	The allowed adsorption sites
morphology	list	The allowed morphologies
props	dict	Dictionary for storing additional atom properties
reg_dim_atm	list	List of atom types that are free dimensions in tree optimization
reg_dim_u	list	List of unpaired electron numbers that are free dimensions in tree optimization
reg_dim_r	list	List of inRing values that are free dimensions in tree optimization
reg_dim_site	list	List of sites that are free dimensions in tree optimization
reg_dim_morphology	list	List of morphologies that are free dimensions in tree optimization

Each list represents a logical OR construct, i.e. an atom will match the group if it matches any item in the list. However, the radical_electrons, and charge attributes are linked such that an atom must match values from the same index in each of these in order to match.

apply_action(action)

Update the atom group as a result of applying action, a tuple containing the name of the reaction recipe action along with any required parameters. The available actions can be found here.

copy()

Return a deep copy of the GroupAtom object. Modifying the attributes of the copy will not affect the original.

count_bonds(wildcards)

Returns: list of the number of bonds currently on the :class:GroupAtom

If the argument wildcards is turned off then any bonds with multiple options for bond orders will not be counted

equivalent(other, strict)

Returns True if other is equivalent to self or False if not, where other can be either an Atom or an GroupAtom object. When comparing two GroupAtom objects, this function respects wildcards, e.g. R!H is equivalent to C.

has_wildcards()

Return True if the atom has wildcards in any of the attributes: atomtype, radical electrons, lone pairs, charge, and bond order. Returns ‘’False’’ if no attribute has wildcards.

is_bonded_to_surface()

Return True if the atom is bonded to a surface GroupAtom X False if it is not

is_bromine()

Return True if the atom represents a bromine atom or False if not.

is_carbon()

Return True if the atom represents a carbon atom or False if not.

is_chlorine()

Return True if the atom represents a chlorine atom or False if not.

is_fluorine()

Return True if the atom represents a fluorine atom or False if not.

is_nitrogen()

Return True if the atom represents a nitrogen atom or False if not.

is_oxygen()

Return True if the atom represents an oxygen atom or False if not.

is_specific_case_of(other)

Returns True if self is the same as other or is a more specific case of other. Returns False if some of self is not included in other or they are mutually exclusive.

is_sulfur()

Return True if the atom represents an sulfur atom or False if not.

is_surface_site()

Return True if the atom represents a surface site or False if not.

make_sample_atom()

Returns: a class :Atom: object analagous to the GroupAtom

This makes a sample, so it takes the first element when there are multiple options inside of self.atomtype, self.radical_electrons, self.lone_pairs, and self.charge

reset_connectivity_values()

Reset the cached structure information for this vertex.