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(2N) 99% Bis(tert-butylcyclopentadienyl)dimethylhafnium(IV)
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(3N) 99.9% Bis(tert-butylcyclopentadienyl)dimethylhafnium(IV)
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(4N) 99.99% Bis(tert-butylcyclopentadienyl)dimethylhafnium(IV)
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(5N) 99.999% Bis(tert-butylcyclopentadienyl)dimethylhafnium(IV)
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Bis(tert-butylcyclopentadienyl)dimethylhafnium(IV) Properties (Theoretical)

Compound Formula C20H32Hf
Molecular Weight 450.96
Appearance solid
Melting Point 73-76 °C
Boiling Point N/A
Density N/A
Solubility in H2O N/A
Exact Mass 452.196951
Monoisotopic Mass 452.196951

Bis(tert-butylcyclopentadienyl)dimethylhafnium(IV) Health & Safety Information

Signal Word Warning
Hazard Statements H228
Hazard Codes F
Risk Codes 11
Safety Statements N/A
RTECS Number N/A
Transport Information UN 1325 4.1/PG 2
WGK Germany 3

About Bis(tert-butylcyclopentadienyl)dimethylhafnium(IV)

Bis(tert-butylcyclopentadienyl)dimethylhafnium(IV) is generally immediately available in most volumes. High purity, submicron and nanopowder forms may be considered. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.

Bis(tert-butylcyclopentadienyl)dimethylhafnium(IV) Synonyms

1, 3-Cyclopentadiene, 1-(1, 1-dimethylethyl)-, hafnium complex; dimethylbis(tert-butylcyclopentadienyl)hafnium(iv); Hafnium, bis[(1, 2, 3, 4, 5-h)-1-(1, 1-dimethylethyl)-2, 4-cyclopentadien-1-yl]dimethyl-

Chemical Identifiers

Linear Formula C20H32Hf
MDL Number MFCD01073804
EC No. N/A
Pubchem CID 22481577
IUPAC Name 2-tert-butylcyclopenta-1,3-diene; carbanide; hafnium(4+)
SMILES [CH3-].[CH3-].CC(C)(C)C1=[C-]CC=C1.CC(C)(C)C1=[C-]CC=C1.[Hf+4]
InchI Identifier InChI=1S/2C9H13.2CH3.Hf/c2*1-9(2,3)8-6-4-5-7-8;;;/h2*4,6H,5H2,1-3H3;2*1H3;/q4*-1;+4

Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Elements


See more Hafnium products. Hafnium (atomic symbol: Hf, atomic number: 72) is a Block D, Group 4, Period 6 element with an atomic weight of 178.49. Hafnium Bohr ModelThe number of electrons in each of Hafnium's shells is 2, 8, 18, 32, 10, 2 and its electron configuration is [Xe] 4f14 5d2 6s2. The hafnium atom has a radius of 159 pm and a Van der Waals radius of 212 pm. Hafnium was predicted by Dmitri Mendeleev in 1869 but it was not until 1922 that it was first isolated Dirk Coster and George de Hevesy. In its elemental form, hafnium has a lustrous silvery-gray appearance. Elemental HafniumHafnium does not exist as a free element in nature. It is found in zirconium compounds such as zircon. Hafnium is often a component of superalloys and circuits used in semiconductor device fabrication. Its name is derived from the Latin word Hafnia, meaning Copenhagen, where it was discovered.


May 24, 2022
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