molybdenum(II) acetate
Enable an agent to identify molybdenum(II) acetate, assess whether a sample retains its dimolybdenum tetraacetate identity, and judge its suitability for a proposed use.
Bundle → Layer → Finding → Questions Filled
6 bundles · 11 layers · 16 findings · 28 questions
Substance identity Establishes which chemical entity the registry entry denotes and where that identity ends.
Names and identifiers
Connects the registry name to chemically consistent external records.
Dimer identity
Record the parent as dimolybdenum tetraacetate, with synonyms and identifiers supported by the retrieved record.
- Does the record denote Mo2(O2CCH3)4, or does its name leave nuclearity unresolved? definition
- Which inspected records support the CAS, EC, and PubChem mappings, and is the PubChem identifier a CID or an SID? provenance
Parent and related species
Separates the parent substance from mixtures and chemically distinct derivatives.
Additional components
Determine whether water, solvent, salts, or extra ligands are contaminants, formulation components, or part of a distinct chemical entity.
- Are additional components unbound residues, lattice guests, or coordinated ligands? measurement
- Does the evidence require a related-species record instead of assigning the entire specimen to the parent compound? boundary
Bonding and coordination Represents the metal pair and acetate arrangement needed to recognize the parent structure.
Dimolybdenum core
Captures evidence for metal identity, oxidation state, and metal-metal bonding.
Core authentication
Record the basis for assigning an intact Mo(II)-Mo(II) core and its bonding interpretation.
- Which structural or spectroscopic observations support the bonded Mo2 core in this specimen? measurement
- Is the +II oxidation-state assignment supported by composition and charge balance, and are conflicting observations present? definition
Acetate environment
Examines the bridging acetate ligands and any changes to the coordination environment.
Ligand connectivity
Track evidence for four bridging acetates and distinguish axial association from replacement of the defining ligands.
- What evidence establishes acetate identity, count, and bridging coordination? measurement
- Does an observed extra ligand represent reversible association under the measurement conditions or an isolated derivative? boundary
Sample composition and quality Connects the nominal identity to the actual amount and condition of material available.
Assay and residues
Separates parent content from free acetate, residual solvents, and other molybdenum species.
Parent content
Record assay basis and impurity evidence without equating total molybdenum content with chemical purity.
- Does the reported assay quantify intact Mo2(OAc)4, total molybdenum, or another analytical quantity? measurement
- Which residual solvents, free acetic acid, salts, or alternative molybdenum species were tested for, and at what detection limits? measurement
Batch fitness
Relates batch evidence to quantity calculations and intended-use acceptance.
Usable amount and grade
Make grade and counting basis explicit when judging or allocating a sample.
- Is the requested amount expressed as moles of Mo2(OAc)4, moles of Mo atoms, or mass of supplied material? definition
- Which verified impurity limits and identity checks must this batch satisfy for the proposed use? action
Physical state and stability Records condition-dependent properties and evidence that the parent persists during storage or measurement.
Phase and solvent behavior
Characterizes solid specimens and their behavior in a specified liquid medium.
Physical property context
Attach solvent, temperature, phase, and species verification to appearance and solubility observations.
- What solid form, color, and phase evidence describe the specimen before measurement? measurement
- In the specified solvent, is the measured concentration attributable to intact parent compound, an adduct, or reaction products? measurement
Thermal and environmental change
Separates thermal transitions from chemical deterioration and assesses exposure history.
Persistence under conditions
Record evidence for retention or loss of identity under the actual temperature, atmosphere, and exposure duration.
- Does a reported thermal event represent melting, sublimation, solvent loss, or decomposition, and how was it assigned? measurement
- What changes after air, moisture, light, or temperature exposure would trigger reanalysis before use? action
- Which source supports the storage conditions for this grade and container history? provenance
Chemical use and handling Connects intended transformations and handling decisions to the verified substance and sample.
Reaction role and compatibility
Defines what the parent must contribute to a proposed chemical operation.
Required core and ligands
Distinguish uses requiring an intact dimolybdenum unit from uses requiring only a molybdenum source.
- Does the intended use require retention of the Mo2 core, exchange of acetate ligands, or conversion to another molybdenum material? action
- Which experimentally supported compatibility evidence applies to the proposed solvent, reagents, and conditions? provenance
Hazard evidence and controls
Resolves the scope and applicability of safety information before it guides action.
Applicable safety record
Record current substance or product safety evidence separately from hazards of synthesis precursors, solvents, and reaction products.
- Which current SDS supplies the applicable GHS classification and handling information for this material and jurisdiction? provenance
- Does a cited exposure limit explicitly cover this compound, a defined molybdenum-compound category, or only a different substance? boundary
- What documented controls and disposal route apply to the actual solid, solution, or contaminated residue being handled? action
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Check these first
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these check these first hold for the sense of molybdenum(II) acetate this model covers, and on what evidence? provenance
Identifiers and schemes
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these identifiers and schemes hold for the sense of molybdenum(II) acetate this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these real-world use hold for the sense of molybdenum(II) acetate this model covers, and on what evidence? provenance
Typical measurements
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these typical measurements hold for the sense of molybdenum(II) acetate this model covers, and on what evidence? provenance
Failure modes and hazards
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these failure modes and hazards hold for the sense of molybdenum(II) acetate this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of molybdenum(II) acetate this model covers, and on what evidence? provenance
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.MAT
What it is Filled
Molybdenum(II) acetate is the dinuclear coordination compound Mo₂(O₂CCH₃)₄, in which four bridging acetate ligands surround a pair of formally Mo(II) centres joined by a molybdenum-molybdenum quadruple bond.
In scope
- Dimolybdenum tetraacetate identity and identifier reconciliation
- Mo-Mo bonding, acetate coordination, and evidence of structural integrity
- Sample assay, impurities, residual solvents, and grade
- Physical properties and changes under specified environmental conditions
- Substance-specific handling evidence and suitability for chemical use
Out of scope
- Manufacturing procedures and reaction apparatus
- Supplier products, packaging, pricing, and inventory management
- Other molybdenum oxidation states, oxides, and acetate complexes
- Distinct ligand-substituted derivatives, coordination adducts, and double salts
- Complete formulations, catalytic systems, and downstream materials containing the compound
Why it exists Filled
Enable an agent to identify molybdenum(II) acetate, assess whether a sample retains its dimolybdenum tetraacetate identity, and judge its suitability for a proposed use.
Distinguishing features Filled
- Confirm the dinuclear formula Mo2(O2CCH3)4 rather than treating the empirical formula Mo(OAc)2 as proof of a monomer; the supplier identifies this substance as dimolybdenum tetraacetate. [Supplier identity record](https://www.sigmaaldrich.com/US/en/product/aldrich/232076)
- Require structural evidence compatible with two molybdenum centers joined by a quadruple bond and surrounded by four bridging acetates. [Tetra(acetato)dimolybdenum(II)](https://girolami-group.chemistry.illinois.edu/publications/publications/Inorg.%20Synth.%202014,%2036,%2078.pdf)
- Verify molybdenum as the metal rather than accepting the similar dimetal tetraacetate architecture as sufficient identification.
- Check whether additional ligands, counterions, or lattice components make the specimen a distinct adduct or double salt rather than the parent substance.
- Reconcile CAS 14221-06-8 and EC 238-089-5 with the actual formula and specimen description; identifiers alone do not establish sample purity. [Supplier identifiers](https://www.sigmaaldrich.com/US/en/product/aldrich/232076)
What robots and AI may and may not do Filled
Must not
- Use or release a sample whose identity has not been checked after storage.
- Handle it outside a controlled laboratory setting.
- Dispose of it in drains or ordinary waste.
- Present literature claims about its bonding as measured data for a particular sample.
Only with a human decision
- Decisions on disposal of a sample.
- Use of a sample outside its documented purpose.
May
- Identify molybdenum(II) acetate from labels, identifiers and analytical data.
- Record whether a sample has kept its stated identity, for its keeper.
- Report its documented hazards from the supplier's safety data sheet.
Moral aspects Filled
- Honest sample records protect the research that relies on them.
- Laboratory staff deserve accurate hazard information.
Who is affected
- Laboratory staff
- Researchers using the results
Owners Filled
Steward
The laboratory or organization that holds the sample.
Links to other meta-models Filled
parent
- Q11173 - registry parent class
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.molybdenum-ii-acetate
- Wikidata: Q6896941 (https://www.wikidata.org/wiki/Q6896941)
Direct properties required Filled
- Molecular identity: Mo2(O2CCH3)4; C8H12Mo2O8
- Formal molybdenum oxidation state: +II for each Mo in the neutral parent compound
- Mo-Mo structural integrity: Supported intact core; altered core; unresolved, with analytical evidence
- Mo-Mo distance: Å, with uncertainty, temperature, and specimen structure
- Assay and impurity profile: Mass % or mol %, with method, basis, and identified impurities
- Residual water and solvent: Mass % or mg/kg, with analytical method
- Physical form and appearance: Powder, crystals, solution, or suspension; observed color and observation conditions
- Solubility and solution identity: mol/L or g/L, with solvent, temperature, equilibration time, and dissolved-species evidence
- Thermal events: °C, with pressure, atmosphere, heating rate, method, and event assignment
- Exposure and storage history: Temperature, atmosphere, moisture exposure, light exposure, duration, and observed changes
- Hazard and regulatory evidence: Applicable SDS and regulatory records, including jurisdiction, revision, classification, and scope
Recognition required Filled
- Typically a yellow crystalline solid; colour change may indicate decomposition.
- Identity is confirmed by the label and analysis, not by colour alone.
Capabilities and actions required Filled
- Reconcile a label or database record with the dimolybdenum tetraacetate identity.
- Compare a sample's analytical evidence with a documented reference material.
- Calculate available parent-compound and molybdenum amounts using assay and an explicit counting basis.
- Assess whether storage exposure or analytical changes require sample requalification.
- Evaluate compatibility with a proposed solvent or ligand-exchange use using condition-specific evidence.
- Identify missing hazard or identity evidence that prevents a justified handling or use decision.
Hazards and failure modes required Filled
- Sensitivity to air or moisture can degrade samples.
- Dust can irritate the eyes, skin and lungs.
- Degraded samples give misleading experimental results.
Standards and interfaces required Filled
- Globally Harmonized System of Classification and Labelling of Chemicals (GHS), United Nations.
Context of use required Filled
- Molybdenum(II) acetate is encountered in inorganic chemistry research as a compound illustrating a metal-metal quadruple bond.
- It is used as a starting material for preparing other dimolybdenum complexes and for studying metal-metal bonding and ligand substitution.
Sources Filled
- Wikidata item Q6896941: molybdenum(II) acetate - identity and sense of the item
- Wikipedia: Molybdenum(II) acetate - general description of the item
Open questions
- Which PubChem CID represents the parent dimer, and how should it be reconciled with supplier SID 24853876 and connectivity representations that omit metal-metal bonding?
- What experimentally supported air, moisture, and light stability limits apply to different grades, and how do these relate to supplier storage recommendations?
- Which reliable measurements establish melting, sublimation, decomposition, or boiling behavior, with pressure and atmosphere specified?
- Which solvents preserve the parent dimer, and what quantitative solubility and solution-speciation data support that conclusion?
- What current jurisdiction-specific GHS classifications, applicable exposure limits, and disposal requirements are supported by inspected safety and regulatory records?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q6896941/spec.json