110682-58-1

Basic information

• Product Name: 1,1-bis(cyclopentadienyl)-2,3-diphenyl-1-hafnacyclopent-2-ene
• Synonyms: 1,1-bis(cyclopentadienyl)-2,3-diphenyl-1-hafnacyclopent-2-ene
• CAS NO: 110682-58-1
• Molecular Weight: 514.967
• Mol File: 110682-58-1.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: 1,1-bis(cyclopentadienyl)-2,3-diphenyl-1-hafnacyclopent-2-ene(CAS DataBase Reference)
• NIST Chemistry Reference: 1,1-bis(cyclopentadienyl)-2,3-diphenyl-1-hafnacyclopent-2-ene(110682-58-1)
• EPA Substance Registry System: 1,1-bis(cyclopentadienyl)-2,3-diphenyl-1-hafnacyclopent-2-ene(110682-58-1)

Safety Data

• Hazardous Substances Data: 110682-58-1(Hazardous Substances Data)

Upstream product

• 12116-66-4 bis(cyclopentadienyl)hafnium dichloride 
• 925-90-6 ethylmagnesium bromide 
• 501-65-5 diphenyl acetylene 
• 83719-75-9 1,1-bis(cyclopentadienyl)-1-hafnacyclopentane 

Downstream Products

• 74-85-1 ethene 

Relevant articles and documents

Preparation and reactions of Cp2HfRCl, Cp2HfRR′ and hafnacyclopent-2-enes

Reaction of Cp2HfCl2 with R3Al (R = Et, n-Pr, or n-Bu) in hexane selectively produced monoalkylhafnocene complexes, Cp2HfRCl (1), in high yields. Cp2HfMeCl (1a) was prepared by the reaction of oxo-bridged hafnocene complex (Cp2HfCl)2(μ-O) with Me3Al. The treatment of 1 with alkylating reagents such as R′Li or EtMgBr afforded unsymmetrical dialkylhafnocene complexes Cp2HfRR′ (3) in good to excellent yields. The kinetic study of thermolysis of Cp2HfEtR (R = Me, Et, n-Bu, sec-Bu, t-Bu or Ph) suggested that decomposition of Cp2HfEt(sec-Bu) was much faster than the others. Cp2Hf(sec-Bu)2 (2e) can be used as a good precursor of Cp2Hf(II) species. Hafnacyclopent-2-enes (4) were prepared in good yields by the reaction of Cp2HfEt2 (2b) with alkynes.