1,3-Di-tert-butylimidazolium tetrafluoroborate
1,3-Di-tert-butylimidazolium tetrafluoroborate (CAS: 263163-17-3) is an N-heterocyclic carbene (NHC) precursor, commonly utilised as a ligand in organometallic chemistry and catalysis. With a molecular weight of 268.10 g/mol, this compound offers steric bulk due to its tert-butyl groups, influencing catalytic activity and selectivity. It serves as a valuable building block in chemical synthesis, particularly for developing novel catalysts.
- IUPAC
- 1,3-Bis(tert-butyl)-imidazol-2-ylidinium tetrafluoroborate,N,N′-Bis(tert-butyl)imidazolium tetrafluoroborate
- Synonyms
- C11H21N2 · BF41,3-Bis(tert-butyl)-imidazol-2-ylidinium tetrafluoroborateN,N′-Bis(tert-butyl)imidazolium tetrafluoroborate

Catalysis
As a precursor to N-heterocyclic carbenes (NHCs), it can be used to form metal complexes that act as catalysts in various organic transformations, including cross-coupling reactions and C-H activation.
Organometallic Chemistry
The compound serves as a valuable ligand precursor in the synthesis of organometallic compounds, where the steric and electronic properties of the resulting NHC ligand can be tuned for specific applications.
Chemical Synthesis
It is employed as a reagent and building block in synthetic organic chemistry, facilitating the construction of complex molecules and novel chemical entities.
| Molecular weight | 268.10 |
|---|---|
| Empirical formula | C11H21N2 · BF4 |
| Assay | 97% |
| Melting point | 157-198 °C |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 1,3-Di-tert-butylimidazolium tetrafluoroborate used for?
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1,3-Di-tert-butylimidazolium tetrafluoroborate is primarily used as a precursor for N-heterocyclic carbene (NHC) ligands in catalysis and organometallic chemistry, and as a building block in chemical synthesis.
What is the CAS number and formula for 1,3-Di-tert-butylimidazolium tetrafluoroborate?
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The CAS number is 263163-17-3 and the empirical formula (Hill notation) is C11H21N2 · BF4.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1,3-Di-tert-butylimidazolium tetrafluoroborate with a minimum assay of 97%. We do not represent this product as USP, BP, or EP grade.
How should 1,3-Di-tert-butylimidazolium tetrafluoroborate be handled?
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Handle with appropriate personal protective equipment, including a dust mask type N95 (US), eyeshields, and gloves. Ensure adequate ventilation. Avoid breathing dust. In case of contact with eyes, rinse cautiously with water for several minutes and seek medical advice.
Is 1,3-Di-tert-butylimidazolium tetrafluoroborate shipped internationally?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including 1,3-Di-tert-butylimidazolium tetrafluoroborate.
How can I request a sample or quote?
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To request a sample or a quote for 1,3-Di-tert-butylimidazolium tetrafluoroborate, please contact our sales team through the website or by phone.
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