{ "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-12T11:52:29Z", "providers": [ "Codex" ], "breadth": "recalled by Codex without web access - no source was read", "missingProviders": [], "pass": 2, "cost": { "grok": { "seconds": 16.7, "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a09575-1100-77d0-8793-0559df949cc0\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: palladium(II) fluoride\nSense to describe: (none recorded)\nDomain code: PHY.MAT\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batch 04", "usd": 0.0, "recall": true }, "codex": { "seconds": 76.9, "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a09575-110e-7693-8b50-f8513475c40c\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: palladium(II) fluoride\nRegistry id: vr.tr.palladium-ii-fluoride\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames folded into " } }, "enrichment": { "pass": 3, "engine": "claude", "producedAt": "2026-10-06T12:00:00Z", "ingestedAt": "2026-10-06T08:53:27+00:00", "fields": [ "agent_conduct", "ethics", "failure_modes_and_hazards", "owners", "standards_and_regulation", "visual_identification" ] }, "gate": { "passed": true, "version": "1.0", "at": "2026-10-07T10:10:31+00:00", "evidence": [ "completeness 1.00", "sense: Wikidata description", "2 live sources", "review by codex: pass" ] } }, "metaModel": { "id": "THING-Q4493224", "registryId": "vr.tr.palladium-ii-fluoride", "name": "palladium(II) fluoride", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.MAT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q4493224/", "model": { "registry_id": "vr.tr.palladium-ii-fluoride", "name": "palladium(II) fluoride", "purpose": "Enable an AI agent to identify palladium(II) fluoride, assess the identity and condition of a particular sample, and determine whether a proposed use is supported by evidence.", "definition": "Palladium(II) fluoride is an inorganic binary compound with formula PdF2, in which palladium has the formal oxidation state +2 and fluorine −1.", "scope_statement": "This model owns the identity of palladium(II) fluoride, nominally PdF2 with palladium in oxidation state +2, and the composition, physical state, chemical behaviour and handling constraints needed to evaluate its samples.", "in_scope": [ "Chemical identity and identifiers distinguishing PdF2 from other palladium fluorides and fluorocomplexes", "Sample purity, palladium-to-fluorine ratio and identified secondary components", "Solid-phase identity and properties under recorded environmental conditions", "Evidence for stability, transformations and suitability for a specified use", "Substance-specific hazard evidence and sample handling constraints" ], "out_of_scope": [ "Other palladium fluorides, fluoropalladate salts and coordination compounds as independent substances", "Palladium metal and other palladium compounds except as impurities or transformation products", "Commercial formulations, packaging and supplier products as independent entities", "Manufacturing equipment and complete synthesis procedures", "Whole reaction systems and catalytic processes in which PdF2 participates", "Facility-wide exposure management and jurisdiction-wide chemical regulation" ], "distinguishing_features": [ "The nominal formula is PdF2; a sample identification must support a palladium-to-fluorine atomic ratio of 1:2 within stated analytical uncertainty.", "Assignment to palladium(II) fluoride requires evidence consistent with palladium in oxidation state +2; elemental composition alone does not establish oxidation state.", "Identity must distinguish a binary palladium fluoride from a fluoropalladate salt containing counterions or a compound containing additional ligands.", "A measured bulk ratio matching PdF2 must not be treated as proof of a single PdF2 phase when mixtures could produce the same ratio.", "A product labelled palladium(II) fluoride must be distinguished from the verified composition and phase identity of the material actually supplied." ], "characteristics": [ { "name": "Substance identity", "kind": "category", "unit_or_values": "PdF2; palladium(II) fluoride; independently verified synonyms and identifiers", "why_it_matters": "Prevents records for another palladium fluoride or a related salt from being attached to this substance." }, { "name": "Palladium-to-fluorine atomic ratio", "kind": "measurement", "unit_or_values": "Dimensionless atomic ratio; nominal Pd:F = 1:2, with method and uncertainty", "why_it_matters": "Tests nominal composition while exposing fluorine deficiency, excess fluorine or mixed material." }, { "name": "Palladium oxidation-state assignment", "kind": "category", "unit_or_values": "+2 supported; mixed assignment; unresolved; include analytical evidence", "why_it_matters": "Distinguishes the intended compound from other oxidation states and partially transformed samples." }, { "name": "PdF2 content and assay basis", "kind": "measurement", "unit_or_values": "Mass fraction or mass percent; distinguish compound assay, palladium assay and metals-basis purity", "why_it_matters": "A high palladium purity does not by itself establish a high fraction of PdF2." }, { "name": "Secondary components", "kind": "measurement", "unit_or_values": "Identified component concentrations in mass percent, mg/kg or another stated basis; include detection limits", "why_it_matters": "Water, oxygen-containing material, residual reagents or other palladium phases may affect identity and suitability." }, { "name": "Phase identity", "kind": "category", "unit_or_values": "Experimentally supported phase designation; mixed phase; poorly crystalline; unresolved", "why_it_matters": "Connects composition to the material phase actually present." }, { "name": "Physical form and particle size", "kind": "measurement", "unit_or_values": "Recorded form; particle-size distribution in µm with measurement method", "why_it_matters": "Supports assessment of sampling, dispersion, surface-dependent behaviour and dust generation." }, { "name": "Thermal response", "kind": "measurement", "unit_or_values": "Event temperature in °C or K, with pressure, atmosphere, heating rate and event assignment", "why_it_matters": "Separates melting, phase change, mass loss and decomposition instead of conflating them." }, { "name": "Environmental stability", "kind": "state", "unit_or_values": "Unchanged, transformed or unresolved over a specified time at recorded temperature, atmosphere and humidity", "why_it_matters": "Determines whether identity and assay remain applicable after storage or exposure." }, { "name": "Hazard and regulatory evidence", "kind": "relation", "unit_or_values": "Links to identity-matched safety documents and authoritative records, with jurisdiction and revision date", "why_it_matters": "Supports handling decisions without assuming that classifications for other fluorides apply to PdF2." } ], "affordances": [ "Match a substance or supplier record to the PdF2 identity using corroborated identifiers and composition.", "Compare sample assay and phase evidence against requirements for a proposed use.", "Identify missing measurements needed to distinguish PdF2 from mixtures or related palladium compounds.", "Evaluate whether storage or exposure history warrants re-characterising a sample.", "Assess proposed contact materials and operating conditions against documented PdF2 behaviour.", "Flag handling or use decisions that remain unsupported by substance-specific evidence." ], "agent_conduct": { "may": [ "Describe palladium(II) fluoride's structure and magnetic properties from published chemistry.", "Report the hazards listed in its safety data sheet." ], "must_not": [ "Handle it without the protective equipment its safety data sheet requires.", "Expose it to moisture where hydrolysis can release hydrogen fluoride.", "Dispose of palladium or fluoride waste into drains or general rubbish." ], "requires_human": [ "Approving experimental work or disposal involving it." ] }, "ethics": { "considerations": [ "Precious metal waste should be recovered rather than lost to the environment." ], "affected_parties": [ "Laboratory staff", "Waste handlers" ] }, "owners": { "steward": "The laboratory that holds it; the supplier answers for its identity and labelling.", "master_systems": [] }, "visual_identification": [ "A pale violet crystalline solid that is sensitive to moisture.", "Its identity needs analysis rather than appearance alone." ], "failure_modes_and_hazards": [ "Hydrolysis can release corrosive hydrogen fluoride.", "Palladium compounds can cause skin sensitisation." ], "standards_and_regulation": [ "Globally Harmonized System of Classification and Labelling of Chemicals (GHS), United Nations." ], "what_it_is_for": [ "Palladium(II) fluoride is encountered in specialist inorganic chemistry research concerning metal fluorides and palladium compounds.", "Its relevance to a proposed reaction or materials study depends on evidence for the sample's composition, purity and behavior under the intended conditions." ] }, "sources": [ { "id": "wikidata", "title": "Wikidata item Q4493224: palladium(II) fluoride", "url": "https://www.wikidata.org/wiki/Q4493224", "url_status": "live", "what_it_supports": "identity and sense of the item", "checked_by": "wikidata-api" }, { "id": "wikipedia-en", "title": "Wikipedia: Palladium(II) fluoride", "url": "https://en.wikipedia.org/wiki/Palladium%28II%29_fluoride", "url_status": "live", "what_it_supports": "general description of the item", "checked_by": "wikidata-api sitelink" } ], "structure": { "bundles": [ { "id": "chemical-identity", "name": "Chemical identity", "description": "Establishes what the name palladium(II) fluoride denotes and how records map to that identity.", "rationale": "Palladium fluoride names, oxidation states and fluorocomplex identities must remain distinguishable.", "layers": [ { "id": "formula-and-oxidation-state", "name": "Formula and oxidation state", "description": "Defines the nominal PdF2 composition and the evidence supporting its assignment.", "findings": [ { "id": "pdf2-identity-test", "name": "PdF2 identity test", "description": "Record composition and oxidation-state evidence separately, including unresolved discrepancies.", "questions": [ { "text": "What evidence supports both Pd:F = 1:2 and assignment of palladium to oxidation state +2?", "kind": "measurement", "id": "pdf2-identity-test-q01" }, { "text": "Does the material represent binary PdF2, or does it contain counterions or ligands requiring a different identity?", "kind": "boundary", "id": "pdf2-identity-test-q02" } ] } ] }, { "id": "identifier-and-record-matching", "name": "Identifier and record matching", "description": "Connects registry and supplier records to a verified chemical identity.", "findings": [ { "id": "verified-identity-crosswalk", "name": "Verified identity crosswalk", "description": "Accept CAS, PubChem and EC identifiers only after checking the identity described by each source.", "questions": [ { "text": "Which CAS number, PubChem CID and EC number, if assigned, are supported by records explicitly identifying PdF2?", "kind": "provenance", "id": "verified-identity-crosswalk-q01" }, { "text": "Which synonyms unambiguously denote palladium(II) fluoride, and which require a formula or oxidation-state qualifier?", "kind": "definition", "id": "verified-identity-crosswalk-q02" } ] } ] } ] }, { "id": "sample-composition", "name": "Sample composition", "description": "Determines how closely an actual sample matches nominal palladium(II) fluoride.", "rationale": "A labelled PdF2 sample can require different decisions depending on assay basis, secondary phases and contamination.", "layers": [ { "id": "assay-and-stoichiometry", "name": "Assay and stoichiometry", "description": "Interprets analytical results without confusing palladium content with PdF2 purity.", "findings": [ { "id": "interpretable-purity", "name": "Interpretable purity", "description": "Preserve the measured species, assay basis, uncertainty and sampling conditions behind any purity claim.", "questions": [ { "text": "Does the stated purity measure PdF2 content, total palladium, or purity relative only to other metals?", "kind": "definition", "id": "interpretable-purity-q01" }, { "text": "Do independent palladium and fluorine measurements support the nominal ratio within their uncertainties?", "kind": "measurement", "id": "interpretable-purity-q02" } ] } ] }, { "id": "secondary-materials", "name": "Secondary materials", "description": "Tracks components that can obscure identity or change sample performance.", "findings": [ { "id": "impurity-and-mixture-evidence", "name": "Impurity and mixture evidence", "description": "Distinguish detected impurities from suspected contaminants and from components not tested.", "questions": [ { "text": "What measurements constrain water, oxygen-containing components, residual reagents and other palladium phases?", "kind": "measurement", "id": "impurity-and-mixture-evidence-q01" }, { "text": "Could a mixture explain the observed bulk Pd:F ratio, and what phase-sensitive evidence resolves that possibility?", "kind": "boundary", "id": "impurity-and-mixture-evidence-q02" } ] } ] } ] }, { "id": "phase-and-physical-properties", "name": "Phase and physical properties", "description": "Connects PdF2 properties to a characterised phase, physical form and measurement conditions.", "rationale": "Unqualified constants and visual descriptions cannot reliably establish identity or predict sample behaviour.", "layers": [ { "id": "solid-phase-characterisation", "name": "Solid-phase characterisation", "description": "Records structural evidence and physical form without assuming an unverified crystal structure.", "findings": [ { "id": "phase-reference-match", "name": "Phase reference match", "description": "Relate diffraction or other structural measurements to an identified reference and document unmatched features.", "questions": [ { "text": "Which measured structural signature and reference support the sample's assignment to a PdF2 phase?", "kind": "provenance", "id": "phase-reference-match-q01" }, { "text": "What physical form, particle-size distribution and evidence of multiple phases were recorded?", "kind": "measurement", "id": "phase-reference-match-q02" } ] } ] }, { "id": "conditioned-property-values", "name": "Conditioned property values", "description": "Qualifies reported constants by phase, conditions and measurement method.", "findings": [ { "id": "thermal-and-bulk-properties", "name": "Thermal and bulk properties", "description": "Keep measured properties distinct from estimates and preserve the interpretation of thermal events.", "questions": [ { "text": "Which density and thermal-property values were measured for characterised PdF2, and under what conditions?", "kind": "measurement", "id": "thermal-and-bulk-properties-q01" }, { "text": "Does a reported melting or boiling value describe that transition, decomposition, sublimation, or an unsupported secondary-source assignment?", "kind": "boundary", "id": "thermal-and-bulk-properties-q02" } ] } ] } ] }, { "id": "stability-and-use-conditions", "name": "Stability and use conditions", "description": "Evaluates whether PdF2 retains its identity and behaves acceptably under proposed conditions.", "rationale": "Use decisions require evidence about this fluoride's transformations and interactions, beyond its nominal formula.", "layers": [ { "id": "exposure-and-transformation", "name": "Exposure and transformation", "description": "Links environmental history to measured changes in composition or phase.", "findings": [ { "id": "identity-retention-window", "name": "Identity retention window", "description": "Describe stability only within tested temperature, atmosphere, humidity and duration limits.", "questions": [ { "text": "What evidence establishes whether PdF2 changes after exposure to moisture, air or elevated temperature?", "kind": "measurement", "id": "identity-retention-window-q01" }, { "text": "Which exposure histories require renewed phase or assay measurements before the sample can be used?", "kind": "action", "id": "identity-retention-window-q02" } ] } ] }, { "id": "contact-and-reaction-suitability", "name": "Contact and reaction suitability", "description": "Tests proposed solvents, contact materials and chemical roles against relevant evidence.", "findings": [ { "id": "supported-use-envelope", "name": "Supported use envelope", "description": "Separate intact dissolution, reaction and dispersion, and require evidence for a proposed reagent or catalytic role.", "questions": [ { "text": "For a proposed medium, does evidence show dissolution of PdF2, chemical transformation, or suspension of solid particles?", "kind": "boundary", "id": "supported-use-envelope-q01" }, { "text": "What PdF2-specific evidence supports the proposed chemical role and compatibility with contacting materials at the intended conditions?", "kind": "action", "id": "supported-use-envelope-q02" } ] } ] } ] }, { "id": "hazards-and-handling-evidence", "name": "Hazards and handling evidence", "description": "Connects handling decisions to identity-matched hazard information and the actual sample condition.", "rationale": "Hazard claims for other palladium compounds or fluorides must not silently become claims about PdF2.", "layers": [ { "id": "classification-and-exposure", "name": "Classification and exposure", "description": "Records applicable classifications and exposure guidance with their substance coverage.", "findings": [ { "id": "identity-matched-hazard-record", "name": "Identity-matched hazard record", "description": "Preserve the source, jurisdiction, date and evidential scope of each hazard statement.", "questions": [ { "text": "Which current safety documents or authoritative records explicitly classify palladium(II) fluoride, and where do they disagree?", "kind": "provenance", "id": "identity-matched-hazard-record-q01" }, { "text": "Are cited exposure limits specific to PdF2 or applicable through a broader palladium or fluoride category, and on what mass basis?", "kind": "boundary", "id": "identity-matched-hazard-record-q02" } ] } ] }, { "id": "sample-specific-controls", "name": "Sample-specific controls", "description": "Relates documented hazards and transformation evidence to practical handling decisions.", "findings": [ { "id": "handling-decision-basis", "name": "Handling decision basis", "description": "Determine controls from sample form, intended operation and documented incompatibilities or decomposition products.", "questions": [ { "text": "What containment, storage and protective measures are supported for this PdF2 sample and the intended operation?", "kind": "action", "id": "handling-decision-basis-q01" }, { "text": "Which spill, waste and emergency instructions account for documented PdF2 reaction products and the sample's contaminants?", "kind": "action", "id": "handling-decision-basis-q02" } ] } ] } ] }, { "id": "evidence-and-external-alignment", "name": "Evidence and external alignment", "description": "What the world already says about this thing, gathered so the model can be checked against it.", "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.", "layers": [ { "id": "reported-evidence", "name": "Reported evidence", "description": "Findings from the breadth pass, kept separate from the structural claims.", "findings": [ { "id": "evidence-confidence-notes", "name": "Check these first", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "This description is based on recall; no sources were consulted.", "Verify registry identifiers, crystal structure, phase behaviour, solubility and documented applications before extending the entry.", "Substance-specific hazard classifications and exposure limits are not established here; empty lists do not imply absence of hazards or regulation." ], "questions": [ { "id": "evidence-confidence-notes-q01", "text": "Which of these check these first hold for the sense of palladium(II) fluoride this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-identifiers", "name": "Identifiers and schemes", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "scheme": "Chemical formula", "value_or_pattern": "PdF2", "note": "One palladium atom per two fluorine atoms." }, { "scheme": "Stock nomenclature", "value_or_pattern": "palladium(II) fluoride", "note": "The Roman numeral specifies palladium's formal oxidation state." } ], "questions": [ { "id": "evidence-identifiers-q01", "text": "Which of these identifiers and schemes hold for the sense of palladium(II) fluoride this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-measurements", "name": "Typical measurements", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "quantity": "Molar mass", "typical_range": "144.42", "unit": "g/mol" } ], "questions": [ { "id": "evidence-measurements-q01", "text": "Which of these typical measurements hold for the sense of palladium(II) fluoride this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-neighbours", "name": "Neighbouring kinds and how to tell them apart", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "name": "palladium(IV) fluoride", "difference": "PdF4 has palladium formally in oxidation state +4 and four fluorine atoms per palladium atom." }, { "name": "palladium(II) chloride", "difference": "PdCl2 contains chloride rather than fluoride while retaining palladium's formal +2 oxidation state." }, { "name": "palladium", "difference": "Elemental Pd has oxidation state zero and contains no chemically combined fluorine." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of palladium(II) fluoride this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Which CAS, PubChem and EC records can be verified as referring specifically to binary palladium(II) fluoride?", "What primary structural evidence establishes the PdF2 reference phase, and are additional phases or composition ranges documented?", "Which reported thermal constants represent measured transitions rather than decomposition or repeated unsupported values?", "What experimental evidence establishes moisture sensitivity, aqueous behaviour, decomposition products and compatible storage conditions?", "Which hazard classifications, exposure limits and proposed chemical uses have evidence specific to PdF2 rather than related substance classes?" ], "statistics": { "bundles": 6, "layers": 11, "findings": 14, "questions": 24 } }