{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:DRQHSE553AA52LMETVVNUGOTEW","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"48f6416889ce8a5ccbce186212f69ef81371f77c6d72817f03d27545953a8da9","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-07-19T10:43:20Z","title_canon_sha256":"cb3d0f535a480f3e2bc0e8c0abc21ba3f9be439a2eab8b76c4c32099d1a43936"},"schema_version":"1.0","source":{"id":"1107.3678","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1107.3678","created_at":"2026-05-18T04:17:24Z"},{"alias_kind":"arxiv_version","alias_value":"1107.3678v1","created_at":"2026-05-18T04:17:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.3678","created_at":"2026-05-18T04:17:24Z"},{"alias_kind":"pith_short_12","alias_value":"DRQHSE553AA5","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_16","alias_value":"DRQHSE553AA52LME","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_8","alias_value":"DRQHSE55","created_at":"2026-05-18T12:26:26Z"}],"graph_snapshots":[{"event_id":"sha256:26d9b4364eb52dbbd76632800bb6c8826b72d04f6a18f02aa530bcba02ed6c33","target":"graph","created_at":"2026-05-18T04:17:24Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Using density functional theory calculations, we have investigated the interactions between hydrogen molecules and metalloporphyrins. A metal atom such as Ca or Ti is introduced for incorporation in the central N$_4$ cavity. Within local density approximation (generalized gradient approximation), we find that the average binding energy of H$_2$ to the Ca atom is about 0.25 (0.1) eV/H$_2$ up to four H$_2$ molecules, whereas that to the Ti atom is about 0.6 (0.3) eV per H$_2$ up to two H$_2$. Our analysis of orbital hybridization between the inserted metal atom and molecular hydrogen shows that ","authors_text":"Gunn Kim, Junga Ryou, Suklyun Hong","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-07-19T10:43:20Z","title":"Origins of dihydrogen binding to metal-inserted porphyrins: electric polarization and Kubas interaction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.3678","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:1d61e9514e8eb702fe95ad69d3a9cb85d4729f523db2f5c9f181d75abd84d34b","target":"record","created_at":"2026-05-18T04:17:24Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"48f6416889ce8a5ccbce186212f69ef81371f77c6d72817f03d27545953a8da9","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-07-19T10:43:20Z","title_canon_sha256":"cb3d0f535a480f3e2bc0e8c0abc21ba3f9be439a2eab8b76c4c32099d1a43936"},"schema_version":"1.0","source":{"id":"1107.3678","kind":"arxiv","version":1}},"canonical_sha256":"1c607913bdd801dd2d849d6ada19d325a4e682962def1fc5a85dfd25fc4cac6d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1c607913bdd801dd2d849d6ada19d325a4e682962def1fc5a85dfd25fc4cac6d","first_computed_at":"2026-05-18T04:17:24.217808Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:17:24.217808Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ydmXAWew+UCOvQMuMxBkrhhoWu7Fh7dp6gjRXtRYx7fU5jf5r5FanjIgUOOfeT4t4cAj236el6DLEhRm2UfMBA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:17:24.218629Z","signed_message":"canonical_sha256_bytes"},"source_id":"1107.3678","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1d61e9514e8eb702fe95ad69d3a9cb85d4729f523db2f5c9f181d75abd84d34b","sha256:26d9b4364eb52dbbd76632800bb6c8826b72d04f6a18f02aa530bcba02ed6c33"],"state_sha256":"f64320e2227aa8dbe1c2a65d553ee873a7a370c16826ab7e7c535aea8e5652be"}