orthonym.assembly.ring_assembly_fragment

Note

Internal API. Names and behaviour may change between releases.

The ring assembly a composer fragment names as a bare prefix.

/ name the bare assembly as a prefix (‘[1,1’-biphenyl]-4-yl’, the Blue Book). A group on

one of its rings is cited with it (‘4’-chloro[1,1’-biphenyl]-4-yl’,,:15560 and:7455), which the bare prefix cannot hold: it dropped the group. A decorated assembly is named with its groups by the single-ring pass of composer._generate_ring_substituent_prefixes, whose chokepoint takes the ring system and every group that hangs off it.

orthonym.assembly.ring_assembly_fragment.bare_ring_assembly_info(mol, ring_systems, fragment_atoms, chain_atoms)

detect_ring_assembly of ring_systems, or None when a group other than the parent chain hangs off an atom of the fragment (fragment_atoms): the bare prefix would omit it.