Net topology

ncb-a

Ingested production record from rcsr+mofplus. Per-field provenance in field_sources.

72 vertices and 204 edges in the unit cell. 18 of them leave the cell and continue into a neighbouring one; those are drawn in the accent colour and end at a hollow node. Squares are vertices of coordination 5 or more, circles of 4 or fewer. Drag to rotate, or focus the figure and use the arrow keys.

Crystallographic description

Spacegroup: not recorded
Cell lengths: a = 4.9858 Å, b = 4.9858 Å, c = 4.9858 Å
Cell angles: α = 90.00°, β = 90.00°, γ = 90.00°
Atoms in cell: 72
Transitivity pqrs: not recorded
Catenated: no; No, on the MOF+ name heuristic: that source marks a catenated net by a -c in its name, which the legacy client filters on, and this is that marker read back. A name heuristic, not a computed property of the topology, and not a measurement either source made.

Canonical key

Systre key: 3 1 2 0 0 0 1 3 0 0 0 1 4 0 0 0 1 5 0 0 0 1 6 0 0 0 1 7 0 0 0 2 3 0 0 0 2 4 0 0 0 2 8 0 0 0 2 9 0 0 0 2 10 0 0 0 3 6 0 0 0 3 9 0 0 0 3 11 0 0 0 4 7 0 0 0 4 10 0 0 0 4 12 0 0 0 5 13 0 0 0 5 14 0 0 0 5 15 0 0 0 5 16 0 0 0 5 17 0 0 0 6 7 0 0 0 6 9 0 0 0 6 18 0 0 0 6 19 0 0 0 7 10 0 0 0 7 18 0 0 0 7 20 0 0 0 8 16 1 0 0 8 17 1 0 0 8 21 0 0 0 8 22 0 0 0 9 10 0 0 0 9 18 0 0 0 9 23 0 0 0 10 18 0 0 0 10 24 0 0 0 11 20 0 1 0 11 25 0 0 0 11 26 0 0 0 11 27 0 0 0 11 28 0 0 0 12 19 0 0 1 12 29 0 0 0 12 30 0 0 0 12 31 0 0 0 12 32 0 0 0 13 14 0 0 0 13 15 0 0 0 13 18 -1 1 1 13 21 -1 0 0 13 22 -1 0 0 14 16 0 0 0 14 21 -1 0 0 14 27 0 0 0 15 17 0 0 0 15 22 -1 0 0 15 30 0 0 0 16 17 0 0 0 16 21 -1 0 0 16 33 0 0 0 17 22 -1 0 0 17 34 0 0 0 19 29 0 0 -1 19 31 0 0 -1 19 33 0 0 0 19 35 0 0 0 20 25 0 -1 0 20 26 0 -1 0 20 34 0 0 0 20 36 0 0 0 21 22 0 0 0 21 31 0 1 0 22 26 0 0 1 23 30 1 0 -1 23 32 1 0 -1 23 33 1 0 0 23 35 1 0 0 24 27 1 -1 0 24 28 1 -1 0 24 34 1 0 0 24 36 1 0 0 25 27 0 0 0 25 32 0 1 0 25 34 0 1 0 26 28 0 0 0 26 36 0 1 0 27 28 0 0 0 27 34 0 1 0 28 29 0 0 -1 28 36 0 1 0 29 30 0 0 0 29 33 0 0 1 30 32 0 0 0 30 33 0 0 1 31 32 0 0 0 31 35 0 0 1 32 35 0 0 1 33 35 0 0 0 34 36 0 0 0 35 36 0 0 0
(rcsr)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.
Checksum: f587193e4d7f421396b88ac731a8d1ee (rcsr)

Vertices

The mapping of coordination sequences onto vertex classes that the source supplied was checked against a walk over the periodic topology of the net itself, one walk per vertex class, and agreed. The sequences are the values the source supplied; the walk settled nothing but which class each one describes.

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.

One row per distinct vertex. The coordination sequence counts how many vertices lie at each topological distance; the vertex symbol names the shortest ring at each angle of the vertex. The two columns do not carry the same warrant: which of them was corroborated, and which was not, is stated above the table.
#	Coordination	Site symmetry	Vertex symbol	Coordination sequence
0	5	—	3.3.3.3.4(2).4(2).6.6.7.7	5 13 28 55 75 119 166 225 264 335
1	5	—	3.3.3.3.4(2).4(2).6.6.7.7	5 13 28 55 75 119 166 225 264 335
2	5	—	3.3.3.3.4(2).4(2).6.6.7.7	5 13 28 55 75 119 166 225 264 335
3	5	—	3.3.3.3.4(2).4(2).6.6.7.7	5 13 28 55 75 119 166 225 264 335
4	5	—	3.3.3.3.4(2).4(2).6.6.7.7	5 13 28 55 75 119 166 225 264 335
5	5	—	3.3.3.3.4(2).4(2).6.6.7.7	5 13 28 55 75 119 166 225 264 335
6	5	—	3.3.3.3.4(2).4(2).6.6.7.7	5 13 28 55 75 119 166 225 264 335
7	5	—	3.3.3.3.4(2).4(2).6.6.7.7	5 13 28 55 75 119 166 225 264 335
8	5	—	3.3.3.3.4(2).4(2).6.6.7.7	5 13 28 55 75 119 166 225 264 335
9	5	—	3.3.3.3.4(2).4(2).6.6.7.7	5 13 28 55 75 119 166 225 264 335
10	5	—	3.3.3.3.4(2).4(2).6.6.7.7	5 13 28 55 75 119 166 225 264 335
11	5	—	3.3.3.3.4(2).4(2).6.6.7.7	5 13 28 55 75 119 166 225 264 335
12	5	—	3.3.3.3.4(2).4(2).6.6.7.7	5 13 28 55 75 119 166 225 264 335
13	5	—	3.3.3.3.4(2).4(2).6.6.7.7	5 13 28 55 75 119 166 225 264 335
14	5	—	3.3.3.3.4(2).4(2).6.6.7.7	5 13 28 55 75 119 166 225 264 335
15	5	—	3.3.3.3.4(2).4(2).6.6.7.7	5 13 28 55 75 119 166 225 264 335
16	5	—	3.3.3.3.4(2).4(2).6.6.7.7	5 13 28 55 75 119 166 225 264 335
17	5	—	3.3.3.3.4(2).4(2).6.6.7.7	5 13 28 55 75 119 166 225 264 335
18	5	—	3.3.3.3.4(2).4(2).6.6.7.7	5 13 28 55 75 119 166 225 264 335
19	5	—	3.3.3.3.4(2).4(2).6.6.7.7	5 13 28 55 75 119 166 225 264 335
20	5	—	3.3.3.3.4(2).4(2).6.6.7.7	5 13 28 55 75 119 166 225 264 335
21	5	—	3.3.3.3.4(2).4(2).6.6.7.7	5 13 28 55 75 119 166 225 264 335
22	5	—	3.3.3.3.4(2).4(2).6.6.7.7	5 13 28 55 75 119 166 225 264 335
23	5	—	3.3.3.3.4(2).4(2).6.6.7.7	5 13 28 55 75 119 166 225 264 335
24	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.7.7.8(4)	6 12 32 53 84 123 163 228 269 341
25	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.7.7.8(4)	6 12 32 53 84 123 163 228 269 341
26	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.7.7.8(4)	6 12 32 53 84 123 163 228 269 341
27	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.7.7.8(4)	6 12 32 53 84 123 163 228 269 341
28	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.7.7.8(4)	6 12 32 53 84 123 163 228 269 341
29	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.7.7.8(4)	6 12 32 53 84 123 163 228 269 341
30	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.7.7.8(4)	6 12 32 53 84 123 163 228 269 341
31	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.7.7.8(4)	6 12 32 53 84 123 163 228 269 341
32	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.7.7.8(4)	6 12 32 53 84 123 163 228 269 341
33	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.7.7.8(4)	6 12 32 53 84 123 163 228 269 341
34	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.7.7.8(4)	6 12 32 53 84 123 163 228 269 341
35	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.7.7.8(4)	6 12 32 53 84 123 163 228 269 341
36	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.7.7.8(4)	6 12 32 53 84 123 163 228 269 341
37	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.7.7.8(4)	6 12 32 53 84 123 163 228 269 341
38	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.7.7.8(4)	6 12 32 53 84 123 163 228 269 341
39	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.7.7.8(4)	6 12 32 53 84 123 163 228 269 341
40	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.7.7.8(4)	6 12 32 53 84 123 163 228 269 341
41	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.7.7.8(4)	6 12 32 53 84 123 163 228 269 341
42	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.7.7.8(4)	6 12 32 53 84 123 163 228 269 341
43	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.7.7.8(4)	6 12 32 53 84 123 163 228 269 341
44	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.7.7.8(4)	6 12 32 53 84 123 163 228 269 341
45	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.7.7.8(4)	6 12 32 53 84 123 163 228 269 341
46	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.7.7.8(4)	6 12 32 53 84 123 163 228 269 341
47	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.7.7.8(4)	6 12 32 53 84 123 163 228 269 341
48	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.6.6.7(2)	6 13 31 46 85 131 155 216 283 345
49	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.6.6.7(2)	6 13 31 46 85 131 155 216 283 345
50	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.6.6.7(2)	6 13 31 46 85 131 155 216 283 345
51	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.6.6.7(2)	6 13 31 46 85 131 155 216 283 345
52	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.6.6.7(2)	6 13 31 46 85 131 155 216 283 345
53	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.6.6.7(2)	6 13 31 46 85 131 155 216 283 345
54	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.6.6.7(2)	6 13 31 46 85 131 155 216 283 345
55	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.6.6.7(2)	6 13 31 46 85 131 155 216 283 345
56	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.6.6.7(2)	6 13 31 46 85 131 155 216 283 345
57	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.6.6.7(2)	6 13 31 46 85 131 155 216 283 345
58	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.6.6.7(2)	6 13 31 46 85 131 155 216 283 345
59	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.6.6.7(2)	6 13 31 46 85 131 155 216 283 345
60	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.6.6.7(2)	6 13 31 46 85 131 155 216 283 345
61	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.6.6.7(2)	6 13 31 46 85 131 155 216 283 345
62	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.6.6.7(2)	6 13 31 46 85 131 155 216 283 345
63	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.6.6.7(2)	6 13 31 46 85 131 155 216 283 345
64	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.6.6.7(2)	6 13 31 46 85 131 155 216 283 345
65	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.6.6.7(2)	6 13 31 46 85 131 155 216 283 345
66	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.6.6.7(2)	6 13 31 46 85 131 155 216 283 345
67	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.6.6.7(2)	6 13 31 46 85 131 155 216 283 345
68	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.6.6.7(2)	6 13 31 46 85 131 155 216 283 345
69	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.6.6.7(2)	6 13 31 46 85 131 155 216 283 345
70	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.6.6.7(2)	6 13 31 46 85 131 155 216 283 345
71	6	—	3.3.3.3.3.4.4.4.4(2).4(2).6.6.6.6.7(2)	6 13 31 46 85 131 155 216 283 345

Provenance

Source: rcsr+mofplus — reconciled from both, field by field
Identifier at the source: ncb-a
Retrieved: 2026-09-09
Licence: CC BY 4.0 — verified from MOF++ project decision, CONTEXT §6 (Licensing): MOF+ is this group's own service, so nets retrieved from it are the project's own data to license, and the project licenses its data CC BY 4.0. No third-party grant is claimed..
Published: yes

Position in the collection

RCSR index: 1382 (derived) 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: 2069 The order the ingest processed this net in, simplest first. A different number from the RCSR index above, meaning a different thing.

Download

Topology.mfpx
Metadata.json

Cite this record

MOF++ contributors (2026). ncb-a [net]. MOF++ dataset release unreleased. Record: https://mofpp.ramabile.casa/net/ncb-a

Permanent URI: https://mofpp.ramabile.casa/net/ncb-a
No dataset DOI has been registered yet — cite the URI and the release version. Why per-record DOIs are not minted.

Licence

CC BY 4.0

Creative Commons Attribution 4.0 International. The licence is recorded on the record itself, not site-wide — deposits may arrive under different terms.

Cite the source

Reticular Chemistry Structure Resource (RCSR) asks to be cited:

M. O'Keeffe, M. A. Peskov, S. J. Ramsden and O. M. Yaghi, 'The Reticular Chemistry Structure Resource (RCSR) Database of, and Symbols for, Crystal Nets', Acc. Chem. Res. 2008, 41, 1782-1789. DOI: 10.1021/ar800124u

© 2019 RCSR.net — https://rcsr.anu.edu.au
This reference is for the resource, not for this net. RCSR publishes a primary reference per net, but the Systre archive distributed as RCSRnets-2019-06-01.arc carries an empty 'ref' field in all 2930 records. The citation shown is for the RCSR resource as a whole, not for this net specifically.

From a script

from mofplus import user_api
api = user_api()
api.get_net("ncb-a")

Or without the client: curl https://mofpp.ramabile.casa/net/ncb-a.json