English name: 2,2,6,6-Tetramethyl-3,5-Heptanedione
CAS: 1118-71-4
Abbreviation: TMHD
We are very proud to recommend one of our core products – 2,2,6,6-Tetramethyl-3,5-Heptanedione (TMHD). With its unique molecular structure and excellent performance, TMHD has become an indispensable key reagent in the fields of metal organic chemistry, materials science and analytical chemistry, especially in applications requiring large sterically hindered β-diketone ligands and highly stable metal complex precursors.
- Product Core Highlights and Unique Value
Significant steric hindrance effect:
The four methyl groups (2,2,6,6-position) build a strong three-dimensional space barrier around the molecular center (3,5-diketone group). This structural feature is the core competitive advantage of TMHD.
The large steric hindrance effect can effectively:
① Stabilize high-coordination or unsaturated coordination metal centers to prevent ligand dissociation or dimerization.
② Inhibit unnecessary side reactions of metal centers and improve catalytic or reaction selectivity.
③ Change the solubility and volatility of metal complexes to make them more suitable for specific processing technologies (such as chemical vapor deposition CVD, atomic layer deposition ALD).
④ Excellent coordination/chelating ability: As a β-diketone compound, TMHD has O,O’ chelating coordination ability and can firmly form six-membered ring chelates (ketal enol form) with a variety of metal ions (including main group, transition metals and lanthanide, actinide metals).
Even in the presence of steric hindrance, its coordination ability is still strong, and the resulting metal complexes usually have good thermal stability and moderate volatility.
- Wide range of application scenarios:
① Metal organic chemical synthesis: Synthesis of highly active and selective metal catalysts (homogeneous catalysis), especially in scenarios where the coordination space needs to be controlled to improve performance.
②Advanced material precursors (CVD/ALD): TMHD metal complexes are classic and preferred precursors for the preparation of metal oxide films (such as HfO₂, ZrO₂, Al₂O₃, Fe₂O₃, CuO, etc. for semiconductors, optical coatings, sensors). Their good volatility and thermal decomposition characteristics make them suitable for vapor deposition technology.
③Coordination polymers and MOFs: Large steric ligands can be used to design novel metal organic framework structures or adjust their pore properties.
④NMR Shift Reagents: The core structure of commonly used shift reagents such as Eu(fod)₃ (tris(1,1,1,2,2,3,3-heptafluoro-7,7-dimethyl-4,6-octanedionato) europium(III)) is derived from similar large steric β-diketones (fod is a fluorinated analog of Htmhd), highlighting the effectiveness of such structures.
⑤Solvent extractant: It can be used for selective extraction and separation of specific metal ions.
⑥Analytical chemistry: It is used as a derivatization agent or complexing agent for metal ions.
3.The core advantages of our products:
①Ultra-high purity: Strict production and purification processes ensure that the product reaches the high purity standard of 98% (GC), meeting the stringent requirements of high-end scientific research and industrial applications.
②Excellent batch stability: Strict quality control system ensures that product performance is highly stable and repeatable between different batches.
③Reliable supply capacity: As our strategic advantage product, we have mature synthesis technology and large-scale production capacity, which can provide you with long-term, stable and sufficient supply guarantee to eliminate your worries.
⑤Professional customization and service: We can provide flexible support according to customer specific needs (such as special specifications, customized packaging), and have a strong technical team to provide you with professional consultation and solutions related to product applications.
4.Why choose our TMHD?
When selecting β-diketone ligands or precursors, steric hindrance is often a key design parameter. 2,2,6,6-Tetramethyl-3,5-heptanedione (TMHD) represents an ideal balance of steric requirements for this class of ligands – it provides sufficient steric protection to stabilize the active metal center while maintaining effective chelation ability.
Whether developing a new generation of catalysts, depositing high-performance functional films, or conducting cutting-edge coordination chemistry research, high-purity, high-stability TMHD will be a solid foundation for your success.
Contact our sales and technical team now to learn about the detailed specifications, pricing information of 2,2,6,6-Tetramethyl-3,5-Heptanedione (CAS: 1118-71-4) and how we can help your project break through bottlenecks and create value!
Contact information:
Contact: Sophia Li
Email: sophia@coreychem.com
