Molecular quantum chemistry · Ace Data Cloud

OMol25 Molecular Quantum ChemistryConnect molecular structure, energy and forces

Open Molecules 2025 quantum-chemistry data covering organic/inorganic molecules, transition-metal complexes and electrolytes, labeled with total energies and atomic forces.

Negotiated pricing · Preview first, then confirm version and scope

Official: over 100M DFT calculationsRegistered scale / confirm version
Size confirmed for the subsetRegistered size / confirm scope
Specification referenceCurrent public preview

Understand the data

Start with the data unit, selection criteria and available samples to assess project fit.

01

Content organization

Official OMol25 covers organic/inorganic molecules, transition metals and electrolytes in ASE DB-compatible LMDB. References describe energy in eV, forces in eV/Å and charge/spin in atoms.info. No original molecular record has been verified; the kit contains specification references.

02

Scope selection

Confirm molecular systems, task and subset; ASE DB-compatible LMDB format; file access is subject to official conditions

03

Preview and version

Field references and README; no original data records. Confirm the full delivery version before ordering.

Preview before evaluating

Inspect field and specification references, then confirm original samples and the required version with sales.

Specifications available; original samples pending

Official OMol25 covers organic/inorganic molecules, transition metals and electrolytes in ASE DB-compatible LMDB. References describe energy in eV, forces in eV/Å and charge/spin in atoms.info. No original molecular record has been verified; the kit contains specification references.

Download a reference kit

Field references and README; no original data records

ZIP · 2.3 KB · Includes Chinese and English README

Download reference kit

Fields and structure

Verified and requested fields are identified in the kit; exact structure depends on the confirmed delivery version.

Field / contentTypeDescription
原子结构ASE Atoms官方 ASE 结构对象,具体记录属性按文件确认。
总能量float · eV官方标签,单位 eV。
原子力array · eV/Å官方标签,单位 eV/Å。
总电荷atoms.info官方文档说明保存于 atoms.info; 精确键名按文件确认。
自旋多重度atoms.info官方文档说明保存于 atoms.info; 精确键名按文件确认。

5 fields shown; all 5 references are in schema-reference.json. Refer to the README for native fields versus preview projections.

Where it fits

Evaluate task relevance and confirm samples and usage rights before delivery.

01

Molecular machine learning

Verify molecular systems, structure representations and subset versions for required labels.

02

Potential-energy and atomic-force research

Confirm energy/force units in actual samples, distinguishing structural attributes from labels.

03

Materials and electrolyte simulation

Select systems for materials/electrolyte tasks after official-file access and sample verification.

From preview to delivery

Pricing is negotiated around your confirmed delivery scope.

01

Inspect the preview

Download the kit and check content, fields and limitations.

02

Confirm scope and rights

Share your topic, version, time range, use and format requirements.

03

Agree on price and delivery

Review samples, quality, delivery contents and negotiated price.

Frequently asked questions

Clarify preview scope, scale and permissions before delivery.

Does the kit contain the full dataset?

Field references and README; no original data records. The public kit is for preview evaluation. Full data requires a confirmed version and delivery list.

Why does catalog scale differ from preview count?

Catalog scale comes from registered sources or official specifications. Public kits contain limited excerpts or references. Verify actual deliverable scale for your selected scope.

Can I use it for training or commercial projects?

Confirm the selected version’s license, provenance and permitted uses. Catalog listing and preview access do not grant training, commercial-use or redistribution rights to the full data.

Evaluation and acceptance checks

Check the actual samples before selecting a batch. These are suggested acceptance criteria, not quality guarantees for the full corpus.

01

ASE/LMDB reader and version

Ask for verifiable examples or counting rules for your selected version and use.

02

Energy in eV, forces in eV/Å and coordinate units

Ask for verifiable examples or counting rules for your selected version and use.

03

Charge/spin keys, calculation level and data splits

Ask for verifiable examples or counting rules for your selected version and use.

Find the right scope for your project

Start with samples and fields, then share your topic, format and intended use. Confirm available versions, delivery contents and negotiated pricing with sales.

Contact sales · Negotiated pricing

Official public reference: OMol25 · OMol25