{"name":"pcu","uri":"https://mofpp.ramabile.casa/net/pcu","type":"net","published":true,"provenance":{"source":null,"source_id":null,"retrieved":null,"licence_source":null,"source_citation":null,"field_sources":{"cella":"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","cellalpha":"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","cellb":"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","cellbeta":"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","cellc":"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","cellgamma":"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","cs":"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","edges":"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","natoms":"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","rcsr_index":"rcsr","rcsr_index_provenance":"rcsr","systre_key":"rcsr","systre_key_checksum":"rcsr","vertices":"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","vs":"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","vs_corroboration":"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.","licence":"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","spacegroup":"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","spacegroup_number":"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","p":"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","q":"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","r":"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","s":"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","topofile":"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","published":"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","comment":"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","row_origin":"pre-existing row, enriched by the net ingest. The row was in the database before this loader ran (mofpp seed) and the ingest added only the fields it genuinely knows about the symbol: the two orderings with their provenances and the Systre key. Its crystallography, transitivity, cell, geometry, deposited file, licence and published flag are the pre-existing row's own and were not written, moved, published or judged here.","enriched_from":"rcsr+mofplus"}},"ordering":{"rcsr_index":1536,"rcsr_index_provenance":"derived","rcsr_index_absence":null,"rcsr_index_note":"Derived by this site, not published by RCSR: the 1-based position of the symbol in the ascending ASCII-lexicographic ordering of the 2930 symbols in the RCSR Systre archive of 2019-06-01. RCSR does not number its nets; this is our ordering of their symbols and nothing more.","complexity_rank":1,"complexity_basis":{"level":3,"level_name":"cell_contents","fields":{"natoms":1,"edge_count":3},"tie_break":{"symbol":"pcu"},"key":[3,1,3,"pcu"],"unkeyed":false}},"spacegroup":"Pm-3m","spacegroup_number":221,"transitivity":{"p":1,"q":1,"r":1,"s":1},"cell":[1.0,1.0,1.0,90.0,90.0,90.0],"natoms":1,"catenated":null,"catenated_note":"Not recorded: no source we read states whether this net is interpenetrated. The RCSR Systre archive carries no catenation field at all, so a record built from it alone says nothing either way. A blank here is that absence, not the claim that the net is not catenated.","licence":"CC-BY-4.0","coordination_sequences":{"state":"unattributed","note":"No corroboration of the coordination-sequence mapping is recorded on this record, which was not written by the provenance-tracked ingest. The sequences are shown as the record stores them, unchecked.","provenance":"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","corroboration":null,"topology_mismatch":null,"class_mapping":null,"unresolved":null,"vertex_symbols":{"state":"not-recorded","note":"No vertex symbol is recorded for this net. Every symbol below is absent, which is a different fact from a symbol that is blank or unknown, and is why the field is null rather than an empty string.","corroboration":"Not corroborated. The coordination sequences beside these symbols carry a corroboration of their own, stated under coordination_sequences; the vertex symbols carry none. A vertex symbol names the shortest ring at each angle of a vertex, no ring perception runs anywhere in this project, and so there is nothing here that could reproduce one: these strings are served on the word of the source alone. What was checked is their shape — a d-coordinated vertex has d(d-1)/2 angles and a whole symbol names a ring at each, and a string that lists fewer is flagged rather than served as a symbol. A string that passes that count can still be wrong in its rings, and nothing here says otherwise.","provenance":"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","stored":0,"shape_checked":0,"truncated":[],"placeholder":[],"incomplete":[],"flagged":{},"absence_reason":"not recorded: no vertex symbol is stored for this vertex."}},"vertex_symbols":{"state":"not-recorded","note":"No vertex symbol is recorded for this net. Every symbol below is absent, which is a different fact from a symbol that is blank or unknown, and is why the field is null rather than an empty string.","corroboration":"Not corroborated. The coordination sequences beside these symbols carry a corroboration of their own, stated under coordination_sequences; the vertex symbols carry none. A vertex symbol names the shortest ring at each angle of a vertex, no ring perception runs anywhere in this project, and so there is nothing here that could reproduce one: these strings are served on the word of the source alone. What was checked is their shape — a d-coordinated vertex has d(d-1)/2 angles and a whole symbol names a ring at each, and a string that lists fewer is flagged rather than served as a symbol. A string that passes that count can still be wrong in its rings, and nothing here says otherwise.","provenance":"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","stored":0,"shape_checked":0,"truncated":[],"placeholder":[],"incomplete":[],"flagged":{},"absence_reason":"not recorded: no vertex symbol is stored for this vertex."},"systre":{"key":"3 1 1 -1 0 0 1 1 0 -1 0 1 1 0 0 -1","checksum":"17a6f64aeaa5a3ae97c3cf7c1201a176","provenance":"rcsr","checksum_provenance":"rcsr","absence":null,"note":"The canonical Systre key, copied verbatim from the local RCSR Systre archive of 2019-06-01. It is not computed here and cannot be: no Gavrog/Systre toolchain runs on this machine, so nothing on this site derives, extends, repairs or verifies a key. The checksum served beside it is the one the archive itself carries, copied from the same block, so that this copy can be checked against the upstream file; no checksum is computed or verified here."},"vertices":[{"idx":0,"coordination_number":6,"symmetry":null,"vertex_symbol":null,"vertex_symbol_absence":"not recorded: no vertex symbol is stored for this vertex.","vertex_symbol_as_stored":null,"coordination_sequence":[6,18,38,66,102,146],"coordination_sequence_absence":null}],"geometry":{"cell":[[1.0,0.0,0.0],[0.0,1.0,0.0],[0.0,0.0,1.0]],"cellparams":[1.0,1.0,1.0,90.0,90.0,90.0],"boundary_edges":3,"vertices":[{"idx":0,"coord":[0.0,0.0,0.0],"coordination_number":6}],"edges":[{"idx":0,"i":0,"j":0,"image":[-1,0,0],"crosses_boundary":true},{"idx":1,"i":0,"j":0,"image":[0,-1,0],"crosses_boundary":true},{"idx":2,"i":0,"j":0,"image":[0,0,-1],"crosses_boundary":true}]},"files":{"mfpx":"https://mofpp.ramabile.casa/net/pcu.mfpx"},"citation":{"text":"MOF++ contributors (2026). pcu [net]. MOF++ dataset release unreleased. Record: https://mofpp.ramabile.casa/net/pcu","record_uri":"https://mofpp.ramabile.casa/net/pcu","dataset_doi":null,"dataset_version":"unreleased","licence":{"id":"CC-BY-4.0","name":"Creative Commons Attribution 4.0 International","url":"https://creativecommons.org/licenses/by/4.0/","short":"CC BY 4.0","open":true}},"relations":{"derived_from":[],"derives":[["pcu-c","catenation"]]}}