Description

Bis(Pentamethylcyclopentadienyl)Hafnium Dichloride CAS NO 85959-83-7 is a highly specialized organohafnium compound, serving as a critical precursor in advanced material synthesis. Its value lies in its role as a high-purity metal-organic source for depositing hafnium-containing thin films with exceptional uniformity and electrical properties. This product is essential for manufacturers and R&D facilities in the semiconductor, optoelectronics, and nanotechnology sectors who require precise control over material composition and performance at the atomic level.

Application

• Atomic Layer Deposition (ALD) & Chemical Vapor Deposition (CVD): A key precursor for depositing hafnium oxide (HfO₂) high-k dielectric films in advanced semiconductor gate stacks and memory devices.
• Specialty Catalysis: Used as a catalyst or catalyst component in selective organic synthesis and polymerization reactions, leveraging its unique sterically hindered metallocene structure.
• Advanced Material Research: Serves as a fundamental building block for developing novel organometallic frameworks, polymers, and nanocomposites with tailored properties.
• Optical and Protective Coatings: Enables the production of thin films for optical applications and corrosion-resistant coatings on sensitive components.

Basic Information

Product Name	Bis(Pentamethylcyclopentadienyl)Hafnium Dichloride
CAS No.	85959-83-7
Molecular Formula	C₂₀H₃₀Cl₂Hf
Molecular Weight	531.15 g/mol
Synonyms	Hafnocene Dichloride, Pentamethylcyclopentadienyl; Bis(pentamethylcyclopentadienyl)hafnium(IV) dichloride; HfCp*₂Cl₂; Hafnium, dichlorobis(η5-1,2,3,4,5-pentamethyl-2,4-cyclopentadien-1-yl)-; Dichlorobis(pentamethylcyclopentadienyl)hafnium(IV); (Pentamethylcyclopentadienyl)hafnium dichloride
EINECS	Contact for details

Quality Control

Our Bis(Pentamethylcyclopentadienyl)Hafnium Dichloride is manufactured under stringent conditions to ensure high purity and batch-to-batch consistency, critical for sensitive deposition processes. Quality is verified through advanced analytical techniques including NMR, elemental analysis, and chromatography. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, containers must be kept sealed under an inert atmosphere (argon or nitrogen) when not in use to prevent degradation. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Yellow to orange crystalline solid
Identification (IR)	Conforms to structure
Assay (Hf Content)	≥ 98.0%
Purity (by NMR)	≥ 97.0%
Chloride Content	Theoretical
Solubility	Soluble in common organic solvents (e.g., toluene, THF)

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.