{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:GLEOUUQPDRXX3LMG5PRNNAFTVX","short_pith_number":"pith:GLEOUUQP","schema_version":"1.0","canonical_sha256":"32c8ea520f1c6f7dad86ebe2d680b3adf24b928e1e7ddd57385a0ac9ab29a0a6","source":{"kind":"arxiv","id":"1809.02677","version":2},"attestation_state":"computed","paper":{"title":"Lattice dynamics and negative thermal expansion in the framework compound ZnNi(CN)$_4$ with two-dimensional and three-dimensional local environments","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Alex C. Hannon, Ann M. Chippindale, Elena Marelli, Mohamed Zbiri, Simon J. Hibble, Stella d'Ambrumenil","submitted_at":"2018-09-07T21:17:24Z","abstract_excerpt":"ZnNi(CN)$_4$ is a 3D framework material consisting of two interpenetrating PtS-type networks in which tetrahedral [ZnN$_4$] units are linked by square-planar [NiC$_4$] units. Both the parent compounds, cubic Zn(CN)$_2$ and layered Ni(CN)$_2$, are known to exhibit 3D and 2D negative thermal expansion (NTE), respectively. Temperature-dependent inelastic neutron scattering measurements were performed on a powdered sample of ZnNi(CN)$_4$ to probe phonon dynamics. The measurements were underpinned by ab initio lattice dynamical calculations. Good agreement was found between the measured and calcula"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1809.02677","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-09-07T21:17:24Z","cross_cats_sorted":[],"title_canon_sha256":"3163c8fc97358ad804fd02bcef50412cf73767938b082dde57123c9864767bde","abstract_canon_sha256":"1208bc00e00b40613091cda85b3c1fd27fad53c2c09751774dc1082eca37b56a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:55:11.839385Z","signature_b64":"94TUgzCu0MYI52fFFT3FviWmbi/Gixs9d5rHpMyKIzKgiVrgwAdSGQqXcm0D8EufZ8J/fe+hs6IRfpfui19pAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"32c8ea520f1c6f7dad86ebe2d680b3adf24b928e1e7ddd57385a0ac9ab29a0a6","last_reissued_at":"2026-05-17T23:55:11.838902Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:55:11.838902Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Lattice dynamics and negative thermal expansion in the framework compound ZnNi(CN)$_4$ with two-dimensional and three-dimensional local environments","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Alex C. Hannon, Ann M. Chippindale, Elena Marelli, Mohamed Zbiri, Simon J. Hibble, Stella d'Ambrumenil","submitted_at":"2018-09-07T21:17:24Z","abstract_excerpt":"ZnNi(CN)$_4$ is a 3D framework material consisting of two interpenetrating PtS-type networks in which tetrahedral [ZnN$_4$] units are linked by square-planar [NiC$_4$] units. Both the parent compounds, cubic Zn(CN)$_2$ and layered Ni(CN)$_2$, are known to exhibit 3D and 2D negative thermal expansion (NTE), respectively. Temperature-dependent inelastic neutron scattering measurements were performed on a powdered sample of ZnNi(CN)$_4$ to probe phonon dynamics. The measurements were underpinned by ab initio lattice dynamical calculations. Good agreement was found between the measured and calcula"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.02677","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1809.02677","created_at":"2026-05-17T23:55:11.838978+00:00"},{"alias_kind":"arxiv_version","alias_value":"1809.02677v2","created_at":"2026-05-17T23:55:11.838978+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.02677","created_at":"2026-05-17T23:55:11.838978+00:00"},{"alias_kind":"pith_short_12","alias_value":"GLEOUUQPDRXX","created_at":"2026-05-18T12:32:25.280505+00:00"},{"alias_kind":"pith_short_16","alias_value":"GLEOUUQPDRXX3LMG","created_at":"2026-05-18T12:32:25.280505+00:00"},{"alias_kind":"pith_short_8","alias_value":"GLEOUUQP","created_at":"2026-05-18T12:32:25.280505+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/GLEOUUQPDRXX3LMG5PRNNAFTVX","json":"https://pith.science/pith/GLEOUUQPDRXX3LMG5PRNNAFTVX.json","graph_json":"https://pith.science/api/pith-number/GLEOUUQPDRXX3LMG5PRNNAFTVX/graph.json","events_json":"https://pith.science/api/pith-number/GLEOUUQPDRXX3LMG5PRNNAFTVX/events.json","paper":"https://pith.science/paper/GLEOUUQP"},"agent_actions":{"view_html":"https://pith.science/pith/GLEOUUQPDRXX3LMG5PRNNAFTVX","download_json":"https://pith.science/pith/GLEOUUQPDRXX3LMG5PRNNAFTVX.json","view_paper":"https://pith.science/paper/GLEOUUQP","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1809.02677&json=true","fetch_graph":"https://pith.science/api/pith-number/GLEOUUQPDRXX3LMG5PRNNAFTVX/graph.json","fetch_events":"https://pith.science/api/pith-number/GLEOUUQPDRXX3LMG5PRNNAFTVX/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/GLEOUUQPDRXX3LMG5PRNNAFTVX/action/timestamp_anchor","attest_storage":"https://pith.science/pith/GLEOUUQPDRXX3LMG5PRNNAFTVX/action/storage_attestation","attest_author":"https://pith.science/pith/GLEOUUQPDRXX3LMG5PRNNAFTVX/action/author_attestation","sign_citation":"https://pith.science/pith/GLEOUUQPDRXX3LMG5PRNNAFTVX/action/citation_signature","submit_replication":"https://pith.science/pith/GLEOUUQPDRXX3LMG5PRNNAFTVX/action/replication_record"}},"created_at":"2026-05-17T23:55:11.838978+00:00","updated_at":"2026-05-17T23:55:11.838978+00:00"}