{ "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-12T09:12:00Z", "providers": [ "Codex" ], "breadth": "recalled by Codex without web access - no source was read", "missingProviders": [], "pass": 2, "cost": { "grok": { "seconds": 18.8, "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: 01a094e2-2754-7a63-8b76-1010f02e7b5d\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: dimethylmagnesium\nSense to describe: (none recorded)\nDomain code: PHY.MAT\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batch 043: 10", "usd": 0.0, "recall": true }, "codex": { "seconds": 77.0, "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: 01a094e2-2741-78d1-95fd-c1a1938c393c\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: dimethylmagnesium\nRegistry id: vr.tr.dimethylmagnesium\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames folded into this entr" } }, "enrichment": { "pass": 3, "engine": "claude", "producedAt": "2026-10-06T12:00:00Z", "ingestedAt": "2026-10-06T08:54:14+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-Q508920", "registryId": "vr.tr.dimethylmagnesium", "name": "dimethylmagnesium", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.MAT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q508920/", "model": { "registry_id": "vr.tr.dimethylmagnesium", "name": "dimethylmagnesium", "purpose": "Enable an agent to recognise dimethylmagnesium, assess the identity and condition of a particular sample, and determine whether its documented composition and handling constraints support an intended use.", "definition": "Dimethylmagnesium is an organomagnesium compound with stoichiometric formula Mg(CH3)2, whose aggregation and coordination depend on its physical state and solvent environment.", "scope_statement": "This model owns the substance identity of dimethylmagnesium within vr.tr.dimethylmagnesium, plane PHY and domain PHY.MAT, together with sample composition, coordination state, condition-dependent properties, reactive capacity and evidence needed for use decisions.", "in_scope": [ "Dimethylmagnesium identity and the distinction between nominal Mg(CH3)2 composition and experimentally established species", "Solvent, donor coordination, aggregation and coexistence with other magnesium species", "Sample grade, active content, halide contamination and degradation", "Physical properties tied to material form and measurement conditions", "Substance-specific reactivity, compatibility and documented hazard classifications" ], "out_of_scope": [ "Commercial formulation identity, packaging design and supplier business records", "Complete synthesis, purification, transfer or disposal procedures", "Methylmagnesium halides and other dialkylmagnesium substances as independent chemical identities", "Reaction products, catalyst systems and downstream manufacturing processes", "Laboratory equipment, facility controls and emergency-response procedures" ], "distinguishing_features": [ "The nominal composition is Mg(CH3)2, or C2H6Mg, with two methyl groups per magnesium; formula alone does not establish aggregation or coordination state.", "Methylmagnesium chloride, bromide and iodide have nominal CH3MgX composition and are distinct substances; a mixed sample requires speciation evidence before being described as dimethylmagnesium.", "Both organic groups must be methyl groups; ethyl-containing or mixed-alkyl magnesium compounds do not meet this identity.", "Magnesium methoxide contains oxygen in its methoxide groups and must not be conflated with dimethylmagnesium.", "A donor adduct or solvent solution must identify its additional constituents; its total mass and measured properties cannot automatically be assigned to unsolvated dimethylmagnesium." ], "characteristics": [ { "name": "Chemical identity", "kind": "category", "unit_or_values": "Dimethylmagnesium; nominal formula Mg(CH3)2 / C2H6Mg; identifiers with source and verification status", "why_it_matters": "Anchors recognition independently of supplier naming or formulation." }, { "name": "Material form", "kind": "category", "unit_or_values": "Unsolvated material; characterised donor adduct; solution; suspension; unresolved mixture", "why_it_matters": "Determines which composition, property and hazard evidence applies." }, { "name": "Solvent and donor environment", "kind": "relation", "unit_or_values": "Named solvents and donor ligands, proportions, and donor-to-magnesium molar ratio where established", "why_it_matters": "Coordination conditions affect the species represented by the nominal formula." }, { "name": "Magnesium and methyl speciation", "kind": "state", "unit_or_values": "Assigned species and fractions, or unresolved; analytical method, temperature and concentration required", "why_it_matters": "Distinguishes dimethylmagnesium from coexisting methylmagnesium halides and magnesium salts." }, { "name": "Active reagent content", "kind": "measurement", "unit_or_values": "mol/L or mmol/g, explicitly stating whether the basis is Mg(CH3)2 formula units or reactive methyl equivalents", "why_it_matters": "Prevents nominal concentration from being mistaken for measured usable capacity." }, { "name": "Purity and residual constituents", "kind": "measurement", "unit_or_values": "Mass fraction or molar fraction; halide-to-magnesium ratio; named analytes, detection limits and methods", "why_it_matters": "Residual salts, solvents and other organomagnesium species can change suitability." }, { "name": "Physical state and thermal behaviour", "kind": "measurement", "unit_or_values": "Phase; temperature in °C or K; pressure in kPa; transition type and decomposition observation", "why_it_matters": "Separates melting, solvent loss and decomposition rather than inventing a universal thermal constant." }, { "name": "Condition and exposure history", "kind": "state", "unit_or_values": "Documented atmosphere, moisture or air exposure, temperature excursions, observation dates and reassay status", "why_it_matters": "A historical identity or assay may no longer describe the current sample." }, { "name": "Applicable hazard and regulatory record", "kind": "relation", "unit_or_values": "Material-matched SDS, jurisdiction, revision date, GHS categories, transport classification and exposure-limit status", "why_it_matters": "Keeps neat-substance evidence distinct from solvent and formulation classifications." } ], "affordances": [ "Match a sample label and analytical evidence to the registered dimethylmagnesium identity.", "Identify when a nominal dimethylmagnesium sample needs qualification as an adduct, solution or mixed organomagnesium system.", "Compare batches using active content, halide burden and donor environment.", "Assess whether reported physical properties apply to the sample's form and conditions.", "Determine whether evidence supports use as a methyl-transfer reagent in a specified reaction context.", "Flag expired, mismatched or incomplete condition and hazard evidence before a handling decision." ], "agent_conduct": { "may": [ "Describe dimethylmagnesium's structure and its role in organometallic chemistry.", "Report its air and water reactivity from safety data." ], "must_not": [ "Handle it outside an inert atmosphere or without trained supervision.", "Store or ship it without the dangerous goods packaging the rules require.", "Dispose of residues without controlled quenching by trained staff." ], "requires_human": [ "Approving experimental work with pyrophoric reagents." ] }, "ethics": { "considerations": [ "Pyrophoric reagents have killed and injured students and researchers; training and supervision are a moral duty." ], "affected_parties": [ "Laboratory staff and students", "Firefighters" ] }, "owners": { "steward": "The laboratory that holds it; the supplier answers for its classification and labelling.", "master_systems": [] }, "visual_identification": [ "A white solid or a solution in an ether solvent, kept in sealed vessels under inert gas." ], "failure_modes_and_hazards": [ "Ignites spontaneously in air.", "Reacts violently with water, releasing flammable gas.", "Causes severe burns." ], "standards_and_regulation": [ "Globally Harmonized System of Classification and Labelling of Chemicals (GHS), United Nations.", "Recommendations on the Transport of Dangerous Goods, Model Regulations, United Nations." ], "what_it_is_for": [ "Dimethylmagnesium is encountered in specialist organometallic research and chemical synthesis as a reagent that can transfer methyl groups.", "It is also studied to understand magnesium-carbon bonding, aggregation and coordination by solvents.", "Its use requires facilities suited to air-sensitive and moisture-sensitive materials, with the actual sample composition documented." ] }, "sources": [ { "id": "wikidata", "title": "Wikidata item Q508920: dimethylmagnesium", "url": "https://www.wikidata.org/wiki/Q508920", "url_status": "live", "what_it_supports": "identity and sense of the item", "checked_by": "wikidata-api" }, { "id": "wikipedia-en", "title": "Wikipedia: Dimethylmagnesium", "url": "https://en.wikipedia.org/wiki/Dimethylmagnesium", "url_status": "live", "what_it_supports": "general description of the item", "checked_by": "wikidata-api sitelink" } ], "structure": { "bundles": [ { "id": "identity-and-boundaries", "name": "Identity and substance boundaries", "description": "Establish what counts as dimethylmagnesium and how records resolve to this registry entry.", "rationale": "Similar names and nominal organomagnesium formulas can conceal materially different substances.", "layers": [ { "id": "reference-identity", "name": "Reference identity", "description": "Connect the registered name to traceable chemical identifiers.", "findings": [ { "id": "formula-and-identifiers", "name": "Formula and identifier agreement", "description": "PubChem identifies dimethylmagnesium as C2H6Mg, CID 18141, with CAS number 2999-74-8. Identifier evidence should be retained with its source: [PubChem](https://pubchem.ncbi.nlm.nih.gov/compound/2999-74-8).", "questions": [ { "text": "Do the sample name, formula and identifiers resolve to dimethylmagnesium rather than another methyl-containing magnesium compound?", "kind": "definition", "id": "formula-and-identifiers-q01" }, { "text": "Which authoritative records establish each identifier, and are any duplicate or conflicting records unresolved?", "kind": "provenance", "id": "formula-and-identifiers-q02" } ] } ] }, { "id": "neighbouring-substances", "name": "Neighbouring substances", "description": "Separate the parent identity from halides, oxygen-containing compounds and formulated materials.", "findings": [ { "id": "parent-versus-sample", "name": "Parent identity versus sample composition", "description": "Represent additional solvents, donors and magnesium compounds explicitly instead of silently treating the whole sample as Mg(CH3)2.", "questions": [ { "text": "Is the record describing dimethylmagnesium itself, a characterised adduct or a mixture containing it?", "kind": "boundary", "id": "parent-versus-sample-q01" }, { "text": "What evidence distinguishes it from methylmagnesium halides, magnesium methoxide and other dialkylmagnesium compounds?", "kind": "definition", "id": "parent-versus-sample-q02" } ] } ] } ] }, { "id": "coordination-and-speciation", "name": "Coordination and speciation", "description": "Capture the chemical forms present under the sample's actual conditions.", "rationale": "The nominal formula does not uniquely specify a solid structure or solution population.", "layers": [ { "id": "donor-and-aggregation-state", "name": "Donor and aggregation state", "description": "Record experimentally supported coordination and association assignments.", "findings": [ { "id": "conditioned-structural-assignment", "name": "Conditioned structural assignment", "description": "Store structural assignments with solvent, donor, phase and method; leave unmeasured aggregation unresolved.", "questions": [ { "text": "Which donor ligands and aggregation states are supported by evidence for this particular material?", "kind": "measurement", "id": "conditioned-structural-assignment-q01" }, { "text": "Does the evidence describe the solid, the solution or both, and under what temperature and concentration conditions?", "kind": "boundary", "id": "conditioned-structural-assignment-q02" } ] } ] }, { "id": "schlenk-related-composition", "name": "Schlenk-related composition", "description": "Account for coexistence with methylmagnesium halides and magnesium dihalides.", "findings": [ { "id": "equilibrium-sensitive-identity", "name": "Equilibrium-sensitive composition", "description": "Methylmagnesium research reports donor- and temperature-dependent Schlenk behaviour involving dimethylmagnesium species; a reagent label alone cannot establish the species distribution. See [experimental coordination and equilibrium study](https://www.sciencedirect.com/science/article/abs/pii/S0022328X04009374).", "questions": [ { "text": "What measurements constrain the amounts of dimethylmagnesium, methylmagnesium halide and magnesium dihalide?", "kind": "measurement", "id": "equilibrium-sensitive-identity-q01" }, { "text": "Which changes in donor environment, temperature or concentration would require the speciation assignment to be reassessed?", "kind": "action", "id": "equilibrium-sensitive-identity-q02" } ] } ] } ] }, { "id": "assay-and-material-quality", "name": "Assay and material quality", "description": "Determine how much usable dimethylmagnesium the sample contains and what accompanies it.", "rationale": "Total magnesium, nominal formula-unit concentration and reactive methyl capacity answer different questions.", "layers": [ { "id": "active-content", "name": "Active content", "description": "Make analytical concentration and capacity comparable without conflating their bases.", "findings": [ { "id": "assay-basis-and-selectivity", "name": "Assay basis and selectivity", "description": "An assay must state its measured quantity and whether it can distinguish dimethylmagnesium from other reactive species.", "questions": [ { "text": "Is the reported value total magnesium, dimethylmagnesium formula-unit concentration or reactive methyl equivalents?", "kind": "measurement", "id": "assay-basis-and-selectivity-q01" }, { "text": "What method, uncertainty and selectivity support interpreting that value as dimethylmagnesium content?", "kind": "provenance", "id": "assay-basis-and-selectivity-q02" } ] } ] }, { "id": "residuals-and-grade", "name": "Residuals and grade", "description": "Describe constituents that affect the intended use beyond nominal active concentration.", "findings": [ { "id": "halide-and-donor-burden", "name": "Halide and donor burden", "description": "Record residual halides, magnesium salts, donors and solvents individually, with detection limits rather than unsupported purity labels.", "questions": [ { "text": "What are the measured halide-to-magnesium ratio and residual solvent or donor contents?", "kind": "measurement", "id": "halide-and-donor-burden-q01" }, { "text": "Which impurity limits are required by the intended use, and does the batch evidence establish compliance?", "kind": "action", "id": "halide-and-donor-burden-q02" } ] } ] } ] }, { "id": "physical-state-and-integrity", "name": "Physical state and integrity", "description": "Relate physical observations and reported constants to a defined sample and its history.", "rationale": "A value for an adduct or solution may misrepresent unsolvated material, while changed condition can invalidate an earlier assay.", "layers": [ { "id": "form-specific-properties", "name": "Form-specific properties", "description": "Qualify phase, solubility and thermal observations by composition and conditions.", "findings": [ { "id": "qualified-property-record", "name": "Qualified property record", "description": "Require material identity, units, pressure and method for physical constants; distinguish dissolution from chemical change and thermal transitions from decomposition.", "questions": [ { "text": "Which phase and solubility observations apply to the stated solvent, donor content and temperature?", "kind": "measurement", "id": "qualified-property-record-q01" }, { "text": "Does a reported thermal event represent melting, boiling, donor loss or decomposition, and how was that determined?", "kind": "measurement", "id": "qualified-property-record-q02" } ] } ] }, { "id": "sample-integrity", "name": "Sample integrity", "description": "Track whether the currently held material still matches its identity and assay evidence.", "findings": [ { "id": "history-linked-reassessment", "name": "History-linked reassessment", "description": "Connect exposure history and physical changes to the need for renewed compositional evidence.", "questions": [ { "text": "What atmosphere, moisture exposure and temperature history are documented since the last assay?", "kind": "provenance", "id": "history-linked-reassessment-q01" }, { "text": "Do observed precipitation, gas evolution or assay changes require reassessment before the intended use?", "kind": "action", "id": "history-linked-reassessment-q02" } ] } ] } ] }, { "id": "reactivity-and-use-constraints", "name": "Reactivity and use constraints", "description": "Connect intended chemical function to evidence about compatibility and applicable hazards.", "rationale": "A dimethylmagnesium use decision depends on its actual form, reactive capacity and documented constraints.", "layers": [ { "id": "reaction-suitability", "name": "Reaction suitability", "description": "Assess methyl-transfer capability in the stated substrate and medium context.", "findings": [ { "id": "contextual-reactive-capacity", "name": "Contextual reactive capacity", "description": "Keep nominal methyl content separate from demonstrated reaction performance and competing reaction pathways.", "questions": [ { "text": "What evidence supports the intended methyl-transfer role for this sample's donor, solvent and impurity profile?", "kind": "provenance", "id": "contextual-reactive-capacity-q01" }, { "text": "Which substrate functionalities or medium components could consume reagent or change the intended reaction outcome?", "kind": "boundary", "id": "contextual-reactive-capacity-q02" } ] } ] }, { "id": "hazard-evidence", "name": "Hazard evidence", "description": "Associate handling constraints with the exact substance form and jurisdiction.", "findings": [ { "id": "material-matched-classification", "name": "Material-matched classification", "description": "Require current evidence for air and moisture sensitivity, ignition behaviour, incompatible substances and regulatory classification without assigning unverified categories.", "questions": [ { "text": "Which SDS or experimental records establish water reactivity, pyrophoric behaviour and incompatibilities for this material form?", "kind": "provenance", "id": "material-matched-classification-q01" }, { "text": "Which GHS, transport and exposure-limit records apply in the relevant jurisdiction, and do they describe dimethylmagnesium or its formulation?", "kind": "boundary", "id": "material-matched-classification-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": [ "CAS, PubChem, and EC identifiers are omitted because their exact values are not confidently recalled.", "Aggregation, solvent coordination, purity, and halide content must be established for the particular material being described.", "Verify phase-transition data and formulation-specific hazard classifications before adding numerical constants or regulatory claims." ], "questions": [ { "id": "evidence-confidence-notes-q01", "text": "Which of these check these first hold for the sense of dimethylmagnesium 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": "C2H6Mg", "note": "Mg(CH3)2 emphasizes the two methyl groups associated with magnesium; it does not specify aggregation or solvation." } ], "questions": [ { "id": "evidence-identifiers-q01", "text": "Which of these identifiers and schemes hold for the sense of dimethylmagnesium this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-real-world-use", "name": "Real-world use", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Methyl-group transfer reagent in chemical synthesis.", "Research on organomagnesium bonding, aggregation, and the Schlenk equilibrium of Grignard reagents." ], "questions": [ { "id": "evidence-real-world-use-q01", "text": "Which of these real-world use hold for the sense of dimethylmagnesium 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 of the unsolvated formula unit", "typical_range": "54.38", "unit": "g/mol" } ], "questions": [ { "id": "evidence-measurements-q01", "text": "Which of these typical measurements hold for the sense of dimethylmagnesium this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-failure-modes-and-hazards", "name": "Failure modes and hazards", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Reacts with water and other proton donors, releasing methane and heat.", "Air exposure can cause oxidation and ignition.", "Moisture or oxygen contamination consumes active reagent and changes its composition.", "Gas evolution during decomposition or quenching can pressurize a closed vessel." ], "questions": [ { "id": "evidence-failure-modes-and-hazards-q01", "text": "Which of these failure modes and hazards hold for the sense of dimethylmagnesium 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": "Methylmagnesium bromide", "difference": "Has nominal composition CH3MgBr and contains bromide, whereas dimethylmagnesium has two methyl groups per magnesium and no halide in its formula." }, { "name": "Dimethylzinc", "difference": "Contains zinc rather than magnesium, giving distinct bonding and reactivity despite the analogous formula." }, { "name": "Dimethylmagnesium solution", "difference": "A formulation containing solvent and a specified reagent concentration, rather than the unsolvated substance alone." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of dimethylmagnesium this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Which authoritative EC or other regulatory identifiers resolve specifically to dimethylmagnesium, and how should potentially duplicate database records be reconciled?", "What primary structural evidence establishes the unsolvated solid and the donor-dependent species relevant to the samples being modelled?", "Which reliable melting, decomposition, boiling or solubility measurements exist, and exactly which material forms and conditions do they describe?", "Which analytical methods distinguish dimethylmagnesium content from total magnesium and other reactive methylmagnesium species with quantified uncertainty?", "What current material-specific evidence establishes GHS and transport classifications, exposure-limit status and reassessment criteria after storage or exposure?" ], "statistics": { "bundles": 6, "layers": 11, "findings": 16, "questions": 26 } }