MOF++

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Net topology

pcu-c

Demonstration record from the development seed — not production data. A name-only stand-in for the catenated relative of pcu: the '-c' is MOF+'s catenation marker and is the only fact recorded here. No geometry and no space group are stored — the seed ships no pcu-c topology file, and pcu's geometry is one uncatenated component, not this net.

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Crystallographic description

Spacegroup
not recorded
Cell lengths
not recorded
Cell angles
not recorded
Atoms in cell
not recorded
Transitivity pqrs
not recorded
Catenated
yes
Yes, as recorded by pre-existing row (mofpp seed fixture; its own cited source is recorded in src/mofpp/seed_data/README.md) — not read from RCSR or MOF+ by this ingest.

Canonical key

Systre key
noneNo Systre key: the name pcu-c is not one of the 2930 symbols in the RCSR Systre archive of 2019-06-01, and the MOF+ service supplies no canonical key at all, so neither source we read states one for this net. None is computed here.
Checksum
not recorded

Vertices

No coordination sequence is recorded for this net: the source stores none. Every sequence below is absent — which is a different fact from a sequence of length zero, and is why the field is null rather than an empty list.

No vertex data recorded for this net.

Computed topology

No computed topology is stored for pcu-c. The analysis that computes periodicity, symmetry, invariants and rings from the graph of the net itself has not been run for this record in this database, so every block below is empty. That is a fact about this database and not about the net: nothing here says this net has no periodicity, no space group, no genus and no rings, only that none of them has been computed here yet.

Cross-checks

Stored symbols against the computed ones
NOT checked. A vertex symbol names the shortest ring at each angle of a vertex; no ring perception is implemented in this project, so nothing here reproduces, compares or contradicts one, and every vertex symbol on this record is carried on the word of the source alone. Two properties of the string itself were checked: that it names one ring per angle, of which a d-coordinated vertex has d*(d-1)/2, and that it names a ring at all. Neither is a check on the rings, and a symbol that passes both can still be wrong. The sentence above was written by the MOF+ reader at ingest, before ring perception existed in this project, and its middle clause is no longer true: mofpp.rings recomputes exactly this symbol from the graph of the net itself. It is quoted as the row stores it rather than edited. On this record no stored symbol could be compared with a recomputed one, so nothing corroborates or contradicts the source either way. The comparison, where one was possible, is served under vertex_symbols.computed_check.

Related nets

  • Derived from pcu (catenation)

Provenance

Source
not recorded — this record predates the provenance-tracked ingest
Identifier at the source
not recorded
Retrieved
not recorded
Licence
CC BY 4.0 — recorded on this record here, not read from a source. This record came from no tracked source, so there is no external licence statement to verify it against; it is this site's own statement about its own deposit.
Published
yes

Position in the collection

RCSR index
none No RCSR index: the name pcu-c is not one of the 2930 symbols in the RCSR Systre archive of 2019-06-01, so this net has no position in that ordering and is listed after every net that does.
Complexity rank
14 The order the ingest processed this net in, simplest first. A different number from the RCSR index above, meaning a different thing.